subject:(Water Distribution Networks)

University of Pretoria

1. [No author]. Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans) .

Degree: 2013, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-04032013-164756/

► Hierdie verhandeling handel oor Nie-verrekenbare water (NVW) van pypnetwerkstelsels, oorsake wat daartoe lei sowel as die verskillende faktore wat daarby betrokke is. Verskillende wyse waarop… (more)

▼ Hierdie verhandeling handel oor Nie-verrekenbare water (NVW) van pypnetwerkstelsels, oorsake wat daartoe lei sowel as die verskillende faktore wat daarby betrokke is. Verskillende wyse waarop die NVW van 'n netwerk bepaal kan word, word ondersoek en metodes vir die vermindering van NVW word bespreek. NVW van pypnetwerkstelsels bestaan uit vier komponente. Sekere van hierdie komponente is van groter belang, veral werklike verliese, as ander. Die volgende vier komponente kan onderskei word: werklike verliese as gevolg van lekkasies wat ekonomies herstelbaar is onvermydelike verliese as gevolg van klein lekkasies wat nie ekonomies herstelbaar is nie oënskynlike verliese as gevolg van stadige perseelmeters aan die leweringskant ongemeterde aftrekkings deur brandkrane en spoelkleppe. Watermeters en hulle akkuraatheid het 'n baie definitiewe invloed op die NVW van 'n netwerk. So byvoorbeeld kan daar 'n aansienlike toename in die NVW voorkom indien meters nie die korrekte volumes wat deur hulle vloei, registreer nie. Pypmateriale en konstruksiemetodes het 'n invloed op NVW en is ondersoek. Indien lae kwaliteit materiaal gebruik word en verkeerde installasie metodes gebruik word lei dit tot meer lekkasies en 'n hoë NVW. Lekkasies in 'n netwerk het 'n invloed op die NVW. As gevolg hiervan is verskeie metodes van lekkasie opsporing ontwikkel. Hierdie verskillende metodes van lekkasie opsporing is in die veld ondersoek om sodoende die bruikbaarheid en geskiktheid van elk te evalueer. Resultate van hierdie ondersoeke dui daarop dat 'n kombinasie van metodes die mees geskik voorkom vir lekkasie opsporing en waterverliesbeheer. Hierdie metodes bestaan hoofsaaklik uit visuele naspeur, soniese sporing sowel as verliesvloeimeters. ENGLISH : The Subject of this thesis is Unaccounted for Water (UAW) of Water distribution Networks. Various causes and factors are responsible for the UAW of networks. These have been studied together with various methods of control. Four components make up the UAW of networks with some being of bigger importance, especially actual losses, than others components are: actual losses due to leaks which are economically repairable unavoidable losses due to small leaks which are not economically repairable apparent losses due to underregistering stand meters unmetered draw-offs via hydrants and flushing valves. Water meters are used to determine the UAW of a closed network by means of measurements on both sides of the network. Inaccurate slow meters can be the cause of the UAW being much larger than otherwise. Pipe materials and construction methods have been studied in as far as it concerns the UAW. Low quality materials and bad construction methods lead to increases in the UAW. Leaks in a network have an influence on the UAW and therefore various methods of leak detection have been developed. Field investigations concerning these various leak detection methods were carried out and these methods were evaluated. From results… Advisors/Committee Members: Prof F A van Duuren (advisor).

Subjects/Keywords: Water distribution networks; Water leweringskant netwerkstelsels; UCTD

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APA (6^th Edition):

author], [. (2013). Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans) . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-04032013-164756/

Chicago Manual of Style (16^th Edition):

author], [No. “Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans) .” 2013. Masters Thesis, University of Pretoria. Accessed April 22, 2021. http://upetd.up.ac.za/thesis/available/etd-04032013-164756/.

MLA Handbook (7^th Edition):

author], [No. “Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans) .” 2013. Web. 22 Apr 2021.

Vancouver:

author] [. Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans) . [Internet] [Masters thesis]. University of Pretoria; 2013. [cited 2021 Apr 22]. Available from: http://upetd.up.ac.za/thesis/available/etd-04032013-164756/.

Council of Science Editors:

author] [. Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans) . [Masters Thesis]. University of Pretoria; 2013. Available from: http://upetd.up.ac.za/thesis/available/etd-04032013-164756/

University of Pretoria

2. Koschade, Wilhelm. Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans).

Degree: Chemical Engineering, 2013, University of Pretoria

URL: http://hdl.handle.net/2263/23748

► Hierdie verhandeling handel oor Nie-verrekenbare water (NVW) van pypnetwerkstelsels, oorsake wat daartoe lei sowel as die verskillende faktore wat daarby betrokke is. Verskillende wyse waarop… (more)

▼ Hierdie verhandeling handel oor Nie-verrekenbare water (NVW) van pypnetwerkstelsels, oorsake wat daartoe lei sowel as die verskillende faktore wat daarby betrokke is. Verskillende wyse waarop die NVW van 'n netwerk bepaal kan word, word ondersoek en metodes vir die vermindering van NVW word bespreek. NVW van pypnetwerkstelsels bestaan uit vier komponente. Sekere van hierdie komponente is van groter belang, veral werklike verliese, as ander. Die volgende vier komponente kan onderskei word: werklike verliese as gevolg van lekkasies wat ekonomies herstelbaar is onvermydelike verliese as gevolg van klein lekkasies wat nie ekonomies herstelbaar is nie oënskynlike verliese as gevolg van stadige perseelmeters aan die leweringskant ongemeterde aftrekkings deur brandkrane en spoelkleppe. Watermeters en hulle akkuraatheid het 'n baie definitiewe invloed op die NVW van 'n netwerk. So byvoorbeeld kan daar 'n aansienlike toename in die NVW voorkom indien meters nie die korrekte volumes wat deur hulle vloei, registreer nie. Pypmateriale en konstruksiemetodes het 'n invloed op NVW en is ondersoek. Indien lae kwaliteit materiaal gebruik word en verkeerde installasie metodes gebruik word lei dit tot meer lekkasies en 'n hoë NVW. Lekkasies in 'n netwerk het 'n invloed op die NVW. As gevolg hiervan is verskeie metodes van lekkasie opsporing ontwikkel. Hierdie verskillende metodes van lekkasie opsporing is in die veld ondersoek om sodoende die bruikbaarheid en geskiktheid van elk te evalueer. Resultate van hierdie ondersoeke dui daarop dat 'n kombinasie van metodes die mees geskik voorkom vir lekkasie opsporing en waterverliesbeheer. Hierdie metodes bestaan hoofsaaklik uit visuele naspeur, soniese sporing sowel as verliesvloeimeters. ENGLISH : The Subject of this thesis is Unaccounted for Water (UAW) of Water distribution Networks. Various causes and factors are responsible for the UAW of networks. These have been studied together with various methods of control. Four components make up the UAW of networks with some being of bigger importance, especially actual losses, than others components are: actual losses due to leaks which are economically repairable unavoidable losses due to small leaks which are not economically repairable apparent losses due to underregistering stand meters unmetered draw-offs via hydrants and flushing valves. Water meters are used to determine the UAW of a closed network by means of measurements on both sides of the network. Inaccurate slow meters can be the cause of the UAW being much larger than otherwise. Pipe materials and construction methods have been studied in as far as it concerns the UAW. Low quality materials and bad construction methods lead to increases in the UAW. Leaks in a network have an influence on the UAW and therefore various methods of leak detection have been developed. Field investigations concerning these various leak detection methods were carried out and these methods were evaluated. From results… Advisors/Committee Members: Van Duuren, F.A. (advisor).

Subjects/Keywords: Water distribution networks; Water leweringskant netwerkstelsels; UCTD

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APA (6^th Edition):

Koschade, W. (2013). Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans). (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/23748

Chicago Manual of Style (16^th Edition):

Koschade, Wilhelm. “Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans).” 2013. Masters Thesis, University of Pretoria. Accessed April 22, 2021. http://hdl.handle.net/2263/23748.

MLA Handbook (7^th Edition):

Koschade, Wilhelm. “Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans).” 2013. Web. 22 Apr 2021.

Vancouver:

Koschade W. Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans). [Internet] [Masters thesis]. University of Pretoria; 2013. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/2263/23748.

Council of Science Editors:

Koschade W. Nie-verrekenbare water van waterverspreidingsnetwerke (Afrikaans). [Masters Thesis]. University of Pretoria; 2013. Available from: http://hdl.handle.net/2263/23748

University of Adelaide

3. Zarghami, Seyed Ashkan. A Complex System Approach to Reliability Analysis of Water Distribution Networks.

Degree: 2019, University of Adelaide

URL: http://hdl.handle.net/2440/124607

► Water Distribution Networks (WDNs) are confronted with numerous operational threats that lead to disruption and dysfunction of their performance. As a response to the growing… (more)

▼ Water Distribution Networks (WDNs) are confronted with numerous operational threats that lead to disruption and dysfunction of their performance. As a response to the growing operational dysfunctions, researchers have recognised the importance of using reliability theory to examine the ability of WDNs to provide continuity in operation. However, the current approaches to reliability analysis of these networks mainly focus on one aspect of the reliability problem and fail to provide a complete representation of all factors involved in reliability analysis. These methods are embedded in capturing either the topological properties or the hydraulic attributes of WDNs. On one hand, the hydraulic-based approaches yield insufficient information as to the structural complexity and the level of interaction among components. On the other hand, the existing topological-based approaches just capture very generic topological properties and ignore various hydraulic attributes of WDNs such as demand and pressure head. Furthermore, the conventional reliability analysis methods are only effective for demonstrating a snapshot of these networks at a given point in time and ignore the variation in the parameters involved in the reliability analysis. This thesis attempts to fill these gaps by generating new knowledge in the area of reliability analysis of WDNs through using a combination of scientific approaches. This includes reliability engineering, system thinking, network theory, probabilistic analysis and hydraulic engineering. It is in this spirit that this research introduces a three-tiered approach. Tier 1 is explicitly tied to evaluate the topological reliability of WDNs. Tier 2 will be developed based on the results of Tier 1, aimed at establishing an integrated framework for reliability analysis. Tier 3 will use the outputs generated by tier 2 and will attempt to capture the dynamic nature of WDNs. In attempting to develop a comprehensive reliability assessment model, the present thesis proposes a number of novel reliability analysis methods for WDNs. Using three case studies from the literature as well as four real-world WDNs of Australian towns, this thesis demonstrates the effectiveness of the proposed methods. This research provides two types of implications. For theory development, it offers new insight and interpretation into the reliability analysis of WDNs by integrating a broad spectrum of various approaches. For water engineering management, the predictive maintenance strategy based on the reliability assessment model proposed here will provide an expert facilitator that helps water service providers to establish and implement a cost-effective maintenance strategy, which relies on identifying and prioritising the vulnerabilities, thereby reducing expenditures on the maintenance activities. Advisors/Committee Members: Gunawan, Indra (advisor), Schultmann, Frank (advisor), Business School (school).

Subjects/Keywords: Complex System; Reliability Analysis; Water Distribution Networks

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APA (6^th Edition):

Zarghami, S. A. (2019). A Complex System Approach to Reliability Analysis of Water Distribution Networks. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/124607

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zarghami, Seyed Ashkan. “A Complex System Approach to Reliability Analysis of Water Distribution Networks.” 2019. Thesis, University of Adelaide. Accessed April 22, 2021. http://hdl.handle.net/2440/124607.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zarghami, Seyed Ashkan. “A Complex System Approach to Reliability Analysis of Water Distribution Networks.” 2019. Web. 22 Apr 2021.

Vancouver:

Zarghami SA. A Complex System Approach to Reliability Analysis of Water Distribution Networks. [Internet] [Thesis]. University of Adelaide; 2019. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/2440/124607.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zarghami SA. A Complex System Approach to Reliability Analysis of Water Distribution Networks. [Thesis]. University of Adelaide; 2019. Available from: http://hdl.handle.net/2440/124607

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

4. Portlock, Daniel. A Comparative Study of Nitrification in Fargo and Moorhead Distribution Networks.

Degree: 2012, North Dakota State University

URL: http://hdl.handle.net/10365/26748

► Nitrification in water distribution networks has become a growing concern for water supplies in the United States. The use of chloramines as a disinfectant in… (more)

Subjects/Keywords: Water distribution networks – North Dakota – Fargo; Water distribution networks – Minnesota – Moorhead; Nitrification

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APA (6^th Edition):

Portlock, D. (2012). A Comparative Study of Nitrification in Fargo and Moorhead Distribution Networks. (Thesis). North Dakota State University. Retrieved from http://hdl.handle.net/10365/26748

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Portlock, Daniel. “A Comparative Study of Nitrification in Fargo and Moorhead Distribution Networks.” 2012. Thesis, North Dakota State University. Accessed April 22, 2021. http://hdl.handle.net/10365/26748.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Portlock, Daniel. “A Comparative Study of Nitrification in Fargo and Moorhead Distribution Networks.” 2012. Web. 22 Apr 2021.

Vancouver:

Portlock D. A Comparative Study of Nitrification in Fargo and Moorhead Distribution Networks. [Internet] [Thesis]. North Dakota State University; 2012. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10365/26748.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Portlock D. A Comparative Study of Nitrification in Fargo and Moorhead Distribution Networks. [Thesis]. North Dakota State University; 2012. Available from: http://hdl.handle.net/10365/26748

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

5. Dawsey, Wesley J. Bayesian belief networks to integrate monitoring evidence of water distribution system contamination.

Degree: MS, 0231, 2012, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/29783

► A Bayesian belief network (BBN) methodology is proposed for combining evidence to better characterize contamination events and reduce false positive sensor detections in drinking water… (more)

Subjects/Keywords: Sensors; Security; Water Distribution; Drinking Water; Bayesian Networks

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APA (6^th Edition):

Dawsey, W. J. (2012). Bayesian belief networks to integrate monitoring evidence of water distribution system contamination. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/29783

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dawsey, Wesley J. “Bayesian belief networks to integrate monitoring evidence of water distribution system contamination.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed April 22, 2021. http://hdl.handle.net/2142/29783.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dawsey, Wesley J. “Bayesian belief networks to integrate monitoring evidence of water distribution system contamination.” 2012. Web. 22 Apr 2021.

Vancouver:

Dawsey WJ. Bayesian belief networks to integrate monitoring evidence of water distribution system contamination. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/2142/29783.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dawsey WJ. Bayesian belief networks to integrate monitoring evidence of water distribution system contamination. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/29783

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Clemson University

6. Chauhan, Varsha. Planar Graph Generation with Application to Water Distribution Networks.

Degree: MS, School of Computing, 2018, Clemson University

URL: https://tigerprints.clemson.edu/all_theses/2975

► The study of network representations of physical, biological, and social phenomena can help us better understand their structure and functional dynamics as well as formulate… (more)

Subjects/Keywords: Multiscale Graph generation; Planar Graphs; Water Distribution System Optimization; Water Networks

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APA (6^th Edition):

Chauhan, V. (2018). Planar Graph Generation with Application to Water Distribution Networks. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/2975

Chicago Manual of Style (16^th Edition):

Chauhan, Varsha. “Planar Graph Generation with Application to Water Distribution Networks.” 2018. Masters Thesis, Clemson University. Accessed April 22, 2021. https://tigerprints.clemson.edu/all_theses/2975.

MLA Handbook (7^th Edition):

Chauhan, Varsha. “Planar Graph Generation with Application to Water Distribution Networks.” 2018. Web. 22 Apr 2021.

Vancouver:

Chauhan V. Planar Graph Generation with Application to Water Distribution Networks. [Internet] [Masters thesis]. Clemson University; 2018. [cited 2021 Apr 22]. Available from: https://tigerprints.clemson.edu/all_theses/2975.

Council of Science Editors:

Chauhan V. Planar Graph Generation with Application to Water Distribution Networks. [Masters Thesis]. Clemson University; 2018. Available from: https://tigerprints.clemson.edu/all_theses/2975

University of Windsor

7. Bata, Mo'tamad. Smart Water: Short-Term Forecasting Application in Water Utilities.

Degree: MA, Civil and Environmental Engineering, 2019, University of Windsor

URL: https://scholar.uwindsor.ca/etd/7685

► The unyielding interconnection between water and energy has made demand forecasting a necessity for water utilities. Electricity prices driven by the time of use has… (more)

Subjects/Keywords: ANN; Artificial Neural Networks; Demand Forecasting; Energy Conservation; Smart Water Grid; Water Distribution networks

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bata, M. (2019). Smart Water: Short-Term Forecasting Application in Water Utilities. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/7685

Chicago Manual of Style (16^th Edition):

Bata, Mo'tamad. “Smart Water: Short-Term Forecasting Application in Water Utilities.” 2019. Masters Thesis, University of Windsor. Accessed April 22, 2021. https://scholar.uwindsor.ca/etd/7685.

MLA Handbook (7^th Edition):

Bata, Mo'tamad. “Smart Water: Short-Term Forecasting Application in Water Utilities.” 2019. Web. 22 Apr 2021.

Vancouver:

Bata M. Smart Water: Short-Term Forecasting Application in Water Utilities. [Internet] [Masters thesis]. University of Windsor; 2019. [cited 2021 Apr 22]. Available from: https://scholar.uwindsor.ca/etd/7685.

Council of Science Editors:

Bata M. Smart Water: Short-Term Forecasting Application in Water Utilities. [Masters Thesis]. University of Windsor; 2019. Available from: https://scholar.uwindsor.ca/etd/7685

Indian Institute of Science

8. Rai, Pawan Kumar. Development And Control Of Urban Water Network Models.

Degree: MSc Engg, Faculty of Engineering, 2013, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/2271

► Water distribution systems convey drinking water from treatment plant and make available to consumers’ taps. It consists of essential components like pipes, valves, pumps, tanks… (more)

▼ Water distribution systems convey drinking water from treatment plant and make available to consumers’ taps. It consists of essential components like pipes, valves, pumps, tanks and reservoirs etc. The main concern in the working of a water distribution system is to assure customer demands under a choice of quantity and quality throughout the complete life span for the probable loading situations. However, in some cases, the existing infrastructure may not be adequate to meet the customer’s requirements. In such cases, system modeling plays an important role in proper management of water supply systems. In present scenario, modeling plays a significant task in appropriate execution of water distribution system. From the angle of taking management decisions valve throttling control and pumps speed control are very important. These operational problems can be addressed by manual control or by automatic control. The problem is the use of manual controls that slow down the effectiveness of the system. It reduces the efficiency of operation of valve or pump. To improve the efficiency of such water distribution systems, an automatic control based technology has been developed that links the operation of the variable speed pump control or valve throttling control. By employing an automatic control, the pump can adjust its speed at all times to meet the actual flow requirements of each load served. In case of real system design Simulink is the most widely used tool. Commercial software package Matlab/Simulink used for creation of WDS model. The goal was to produce a model that could numerically analyze the dynamic performance of a water distribution system. A Comparison of single platform methodology (Simulink based control) and double platform methodology (Matlab and EPANET based control) has been done. Nonlinear Dynamic Inversion (DI) Control system model is developed for WDS model in Matlab/Simulink environment. Controller gain parameters are the very important value in control prospective. If the controller gain parameters are chosen incorrectly, the controlled process input can be unstable, i.e. its output diverges, with or without oscillation Tuning is the adjustment of control parameters (gains) to the optimum values for the desired control response. There are several methods for tuning controller like manual tuning (Trial and error procedure), Ziegler-Nichols method, Output Constraint Tuning (OCT) etc. Establishment of a pump operational policy by which all the reservoirs can be fed simultaneously to meet their requirements without creating undue transients. Tune the gain of DI controllers by different tuning methods and evaluate the best tuning method on the basis of controller performance. Development of meaningful additional objective is search of lower bound pump speed on the basis of control time or settling time. To bring the pump speeds in feasible range, application of constraint in pumps speed is introduced. The magnitude of constraints can be found using Monte Carlo methods. Monte Carlo methods are… Advisors/Committee Members: Mohan Kumar, M S (advisor).

Subjects/Keywords: Urban Water Supply; Urban Water Distribution System; Water Resourses - Urban Areas; Water Distribution Systems (WDS); Hydraulic Modeling; Urban Water Network Models; Water Distribution Systems - Modelling; Water Distribution Networks - Control; Water Distribution System - Matlab/Simulink Based Modeling; Water Distribution Network; Hydrology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rai, P. K. (2013). Development And Control Of Urban Water Network Models. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/2271

Chicago Manual of Style (16^th Edition):

Rai, Pawan Kumar. “Development And Control Of Urban Water Network Models.” 2013. Masters Thesis, Indian Institute of Science. Accessed April 22, 2021. http://etd.iisc.ac.in/handle/2005/2271.

MLA Handbook (7^th Edition):

Rai, Pawan Kumar. “Development And Control Of Urban Water Network Models.” 2013. Web. 22 Apr 2021.

Vancouver:

Rai PK. Development And Control Of Urban Water Network Models. [Internet] [Masters thesis]. Indian Institute of Science; 2013. [cited 2021 Apr 22]. Available from: http://etd.iisc.ac.in/handle/2005/2271.

Council of Science Editors:

Rai PK. Development And Control Of Urban Water Network Models. [Masters Thesis]. Indian Institute of Science; 2013. Available from: http://etd.iisc.ac.in/handle/2005/2271

University of Waterloo

9. Cody, Roya. Acoustic Monitoring for Leaks in Water Distribution Networks.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/15773

► Water distribution networks (WDNs) are complex systems that are subjected to stresses due to a number of hydraulic and environmental loads. Small leaks can run… (more)

▼ Water distribution networks (WDNs) are complex systems that are subjected to stresses due to a number of hydraulic and environmental loads. Small leaks can run continuously for extended periods, sometimes indefinitely, undetected due to their minimal impact on the global system characteristics. As a result, system leaks remain an unavoidable reality and water loss estimates range from 10%-25% between treatment and delivery. This is a significant economic loss due to non-revenue water and a waste of valuable natural resource. Leaks produce perceptible changes in the sound and vibration fields in their vicinity and this aspect as been exploited in various techniques to detect leaks today. For example, the vibrations caused on the pipe wall in metal pipes, or acoustic energy in the vicinity of the leak, have all been exploited to develop inspection tools. However, most techniques in use today suffer from the following: (i) they are primarily inspection techniques (not monitoring) and often involve an expert user to interpret inspection data; (ii) they employ intrusive procedures to gain access into the WDN and, (iii) their algorithms remain closed and publicly available blind benchmark tests have shown that the detection rates are quite low. The main objective of this thesis is to address each of the aforementioned three problems existing in current methods. First, a technology conducive to long-term monitoring will be developed, which can be deployed year-around in live WDN. Secondly, this technology will be developed around existing access locations in a WDN, specifically from fire hydrant locations. To make this technology conducive to operate in cold climates such as Canada, the technology will be deployed from dry-barrel hydrants. Finally, the technology will be tested with a range of powerful machine learning algorithms, some new and some well-proven, and results published in the open scientific literature. In terms of the technology itself, unlike a majority of technologies that rely on accelerometer or pressure data, this technology relies on the measurement of the acoustic (sound) field within the water column. The problem of leak detection and localization is addressed through a technique called linear prediction (LP). Extensively used in speech processing, LP is shown in this work to be effective in capturing the composite spectrum effects of radiation, pipe system, and leak-induced excitation of the pipe system, with and without leaks, and thus has the potential to be an effective tool to detect leaks. The relatively simple mathematical formulation of LP lends itself well to online implementation in long-term monitoring applications and hence motivates an in-depth investigation. For comparison purposes, model-free methods including a powerful signal processing technique and a technique from machine learning are employed. In terms of leak detection, three data-driven anomaly detection approaches are employed and the LP method is explored for leak localization as well. Tests were conducted on…

Subjects/Keywords: linear prediction; Water distribution networks; Acoustic signal; Leak detection; Hydrophone

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APA (6^th Edition):

Cody, R. (2020). Acoustic Monitoring for Leaks in Water Distribution Networks. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15773

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cody, Roya. “Acoustic Monitoring for Leaks in Water Distribution Networks.” 2020. Thesis, University of Waterloo. Accessed April 22, 2021. http://hdl.handle.net/10012/15773.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cody, Roya. “Acoustic Monitoring for Leaks in Water Distribution Networks.” 2020. Web. 22 Apr 2021.

Vancouver:

Cody R. Acoustic Monitoring for Leaks in Water Distribution Networks. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10012/15773.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cody R. Acoustic Monitoring for Leaks in Water Distribution Networks. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15773

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Adelaide

10. Broad, Darren Ross. Water distribution system optimization using metamodels.

Degree: 2014, University of Adelaide

URL: http://hdl.handle.net/2440/98139

► Evolutionary Algorithms (EAs) have been shown to apply well to optimizing the design and operations of water distribution systems (WDS). Recent research in the field… (more)

▼ Evolutionary Algorithms (EAs) have been shown to apply well to optimizing the design and operations of water distribution systems (WDS). Recent research in the field has focussed on improving existing EAs and developing new ones so as to obtain better solutions (closer to the global optimum) and/or find solutions more efficiently. The primary aim of this research, however, has been to broaden the scope of optimization to include a number of the many factors that planning engineers need to consider when designing or planning the operations of WDS. Those factors considered here are (1) water quality criteria, (2) real-world, complex systems, and (3) the incorporation of data uncertainty. Incorporating each of these factors independently increases computational run-time of EA-based optimization of an algorithm that is already computationally intensive compared to other (inferior) algorithms that have been used in WDS optimization. Water quality models tend to run slower than hydraulic models due to the shorter timestep that is required to ensure sufficient accuracy, and the need for extended period simulations thereby increasing the simulation duration. Real-world models run slower due to their size. Data uncertainty is typically accounted for through the use of Monte Carlo simulations, that add several orders of magnitude to the computational requirements of optimization. Considering each of these factors together compounds the computational requirements to a point where it is impossible to optimize WDS using EAs in a reasonable amount of time. In this research metamodels have been used in place of simulation models within an EA to reduce this computational burden. A metamodel is a model of a model that runs much faster than the said model, but is still a high-fidelity approximation of it. The particular type of metamodel used in this research is an Artificial Neural Network (ANN) due to its theoretical capabilities and demonstrated effectiveness in water resources applications. The use of metamodels to act as surrogates for complex simulation models is not a trivial task. Therefore, guidelines have been developed on how best to incorporate them into the WDS optimization process. The overall metamodel-empowered, EA-based optimization algorithm developed in this research was applied to several case studies. Two small case studies, both variations of the New York Tunnels problem were studied for proof-of-concept purposes. They demonstrated that near globally-optimal solutions could still be found using the metamodel-based approach, i.e. there was minimal compromise in the effectiveness of the EA-based approach. Two larger, real-world problems were also studied: Wallan (operations planning) and Pacific City (system augmentation). These last two case studies were key to demonstrating the power of using metamodels in that they enabled a computational speed-up of up to 1375 times (137,500%) compared to a non-metamodel approach. This speed-up includes factoring in the computational overheads of using metamodels, i.e. time… Advisors/Committee Members: Dandy, Graeme Clyde (advisor), Maier, Holger R. (advisor), School of Civil, Environmental and Mining Engineering (school).

Subjects/Keywords: water distribution systems; optimization; genetic algorithms; neural networks; metamodel; computional intelligence

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Broad, D. R. (2014). Water distribution system optimization using metamodels. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/98139

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Broad, Darren Ross. “Water distribution system optimization using metamodels.” 2014. Thesis, University of Adelaide. Accessed April 22, 2021. http://hdl.handle.net/2440/98139.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Broad, Darren Ross. “Water distribution system optimization using metamodels.” 2014. Web. 22 Apr 2021.

Vancouver:

Broad DR. Water distribution system optimization using metamodels. [Internet] [Thesis]. University of Adelaide; 2014. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/2440/98139.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Broad DR. Water distribution system optimization using metamodels. [Thesis]. University of Adelaide; 2014. Available from: http://hdl.handle.net/2440/98139

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

11. Rehan, Rashid. Sustainable Municipal Water and Wastewater Management Using System Dynamics.

Degree: 2011, University of Waterloo

URL: http://hdl.handle.net/10012/6392

► The overall goal of this research is to develop an integrated system dynamics framework for sustainable management of municipal water and wastewater systems. Canadian municipalities… (more)

▼ The overall goal of this research is to develop an integrated system dynamics framework for sustainable management of municipal water and wastewater systems. Canadian municipalities have traditionally relied on grants received from senior levels of government to finance construction of water supply and wastewater collection infrastructure. User fees for water and wastewater services were determined so as to recover only the operating expenditures with no allowance to recoup the capital costs of infrastructure. As the infrastructure assets started approaching the end of their service life, investments needed to rehabilitate these assets were deferred in the expectation of receiving further grants for this purpose. Hence, a significant backlog of deteriorated infrastructure has accumulated over the years. Recently enacted regulations require that all expenditures incurred on provision of water and wastewater services should ultimately be financed from user fee based revenues. Another piece of legislation provides for establishment of service performance standards. Urban water and wastewater systems involve interconnections among physical infrastructure, financial, and socio-political factors. Several interacting feedback loops are formed due to these interconnections and render the management of water and wastewater infrastructure as a complex, dynamic problem. Existing asset management tools in the literature are found inadequate to capture the influence of feedback loops. A novel system dynamics approach is used to develop a demonstration model for water and wastewater network management. Model results for a case study show significance of feedback loops for financial sustainability of the system. For example, user fees have to be substantially increased to achieve financial sustainability, especially when price elasticity of water demand is considered. A detailed causal loop diagram for management of wastewater collection networks is presented. The causal loop diagram lays out qualitative causal relationships among system components and identifies multiple interacting feedback loops. Based on this causal loop diagram, a system dynamics model comprised of a wastewater pipes sector, a finance sector, and a consumers sector, is developed. Policy levers are included in the model to facilitate formulation of different financing and rehabilitation strategies for the wastewater collection network. Financial and service performance indicators included in the model allow comparison of different financing and rehabilitation strategies. Data requirements for implementation of the model are discussed. The wastewater collection network model is implemented for a case study of a medium-sized Canadian municipality with a substantial backlog of deteriorated pipes. A methodology for parameterization of the model using existing data sources is presented. Simulation results indicate that different financing strategies ranging from no borrowing to full utilization of debt capacity can achieve similar total life-cycle costs but with…

Subjects/Keywords: Infrastructure Management; Asset Management; Sustainability; Wastewater Collection Networks; Water Distribution Networks; System Dynamics; Urban Water Systems; Urban Wastewater Systems; Management Framework

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APA (6^th Edition):

Rehan, R. (2011). Sustainable Municipal Water and Wastewater Management Using System Dynamics. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6392

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rehan, Rashid. “Sustainable Municipal Water and Wastewater Management Using System Dynamics.” 2011. Thesis, University of Waterloo. Accessed April 22, 2021. http://hdl.handle.net/10012/6392.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rehan, Rashid. “Sustainable Municipal Water and Wastewater Management Using System Dynamics.” 2011. Web. 22 Apr 2021.

Vancouver:

Rehan R. Sustainable Municipal Water and Wastewater Management Using System Dynamics. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10012/6392.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rehan R. Sustainable Municipal Water and Wastewater Management Using System Dynamics. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/6392

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. Taha M. AL-Washali. Water loss assessment in distribution networks: Methods, applications and implications in intermittent supply.

Degree: 2020, CRC Press/Balkema

URL: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/56837

► Water utilities worldwide lose 128 billion cubic meters annually, causing annual monetary losses estimated at USD 40 billion. Most of these losses occur in developing… (more)

Subjects/Keywords: water loss; water distribution networks; assessment; water meters; water supply networks

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APA (6^th Edition):

AL-Washali, T. M. (2020). Water loss assessment in distribution networks: Methods, applications and implications in intermittent supply. (Doctoral Dissertation). CRC Press/Balkema. Retrieved from http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/56837

Chicago Manual of Style (16^th Edition):

AL-Washali, Taha M.. “Water loss assessment in distribution networks: Methods, applications and implications in intermittent supply.” 2020. Doctoral Dissertation, CRC Press/Balkema. Accessed April 22, 2021. http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/56837.

MLA Handbook (7^th Edition):

AL-Washali, Taha M.. “Water loss assessment in distribution networks: Methods, applications and implications in intermittent supply.” 2020. Web. 22 Apr 2021.

Vancouver:

AL-Washali TM. Water loss assessment in distribution networks: Methods, applications and implications in intermittent supply. [Internet] [Doctoral dissertation]. CRC Press/Balkema; 2020. [cited 2021 Apr 22]. Available from: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/56837.

Council of Science Editors:

AL-Washali TM. Water loss assessment in distribution networks: Methods, applications and implications in intermittent supply. [Doctoral Dissertation]. CRC Press/Balkema; 2020. Available from: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/56837

University of Michigan

13. Lee, Byoung Ho. Locating monitoring stations in water distribution networks.

Degree: PhD, Health and Environmental Sciences, 1990, University of Michigan

URL: http://hdl.handle.net/2027.42/128524

► The United States Environmental Protection Agency requires all drinking water authorities to monitor the water quality in their distribution systems to ensure that the water… (more)

▼ The United States Environmental Protection Agency requires all drinking water authorities to monitor the water quality in their distribution systems to ensure that the water reaching the public will be safe to drink. The regulations prescribe the sampling frequency and the water quality parameters to be monitored. The sampling frequency is based on the size of the population served by the distribution system, and the sampling is to be spaced evenly over time. However, procedures for achieving the goal of representative sampling in a distribution system are not specified. Hence, this research was initiated to develop algorithms and procedures for locating monitoring stations in a water distribution system. A literature search showed that significant changes can occur in the water quality and focused on three major parameters of water quality: chlorine residual, total trihalomethanes, and bacterial concentrations. To select monitoring stations in a rational manner, an understanding of the flow in the distribution system is absolutely necessary. The Kentucky Pipes Model and the WADISO Model were used to predict the flows which were displayed using computer graphics. A computer model was developed to predict the changes of selected water quality parameters for both dynamic and steady-state conditions. An important component of this research is the concept of representativeness, the percentage of population whose tap water is effectively monitored by the sampling stations. Using this concept two algorithms for selecting monitoring stations were developed which maximize the representativeness. The first method uses integer programming to find an optimal set, the second uses a heuristic method to locate the stations using computer graphics. Pathway analyses show the flow from the source of water to a selected sampling station. The methodologies were applied to the water distribution systems in New Haven, Connecticut, and the city of Flint, Michigan. Comparisons between present monitoring stations and the newly developed ones show that the new monitoring stations protect a greater percentage of the population. General graphs were developed which relate the representativeness to the percentage of nodes sampled. These graphs and equations can serve as guidelines for the development of monitoring programs in other networks. Advisors/Committee Members: Deininger, Rolf A. (advisor).

Subjects/Keywords: Distribution; Locating; Monitoring; Networks; Stations; Water

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APA (6^th Edition):

Lee, B. H. (1990). Locating monitoring stations in water distribution networks. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/128524

Chicago Manual of Style (16^th Edition):

Lee, Byoung Ho. “Locating monitoring stations in water distribution networks.” 1990. Doctoral Dissertation, University of Michigan. Accessed April 22, 2021. http://hdl.handle.net/2027.42/128524.

MLA Handbook (7^th Edition):

Lee, Byoung Ho. “Locating monitoring stations in water distribution networks.” 1990. Web. 22 Apr 2021.

Vancouver:

Lee BH. Locating monitoring stations in water distribution networks. [Internet] [Doctoral dissertation]. University of Michigan; 1990. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/2027.42/128524.

Council of Science Editors:

Lee BH. Locating monitoring stations in water distribution networks. [Doctoral Dissertation]. University of Michigan; 1990. Available from: http://hdl.handle.net/2027.42/128524

Texas A&M University

14. Agumbe Suresh Mahima. A Cyber-Physical Systems Approach to Water Distribution System Monitoring.

Degree: PhD, Computer Science, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/156536

► Water Distribution Systems (WDS) are critical infrastructures of national importance that supply water of desired quality and quantity to consumers. They are prone to damages… (more)

▼ Water Distribution Systems (WDS) are critical infrastructures of national importance that supply water of desired quality and quantity to consumers. They are prone to damages and attacks such as leaks, breaks, and chemical contamination. Monitoring of WDS for prompt response to such events is of paramount importance. WDS monitoring has been typically performed using static sensors that are strategically placed. These solutions are costly and imprecise. Recently mobile sensors for WDS monitoring has attracted research interest to overcome the shortcomings of static sensors. However, most existing solutions are unrealistic, or disrupt the normal functioning of a WDS. They are also designed to be deployed on-demand, i.e., when the utility manager receives complaints or suspects the presence of a threat. We propose to solve the problem of WDS monitoring through a Cyber-Physical system (CPS) approach. We envision a Cyber-Physical Water Distribution System (CPWDS) with mobile sensors that are deployed in the CPWDS and move with the flow of water in pipes; mobile sensors communicate with static beacons placed outside the pipes and report sensed data; the flows in the pipes are controlled to ensure that the sensors continuously cover the main pipes of the WDS. We propose algorithms to efficiently monitor the WDS with limited number of devices, protocols to efficiently communicate among the devices, and mechanisms to control the flows in the WDS such that consumer demands are met while sensors continuously move around. We evaluate our algorithms, protocols, and design of communication, computation and control components of the CPWDS through a simulator developed specifically to model the movement of sensors through the pipes of the WDS. Our simulations indicate that investing on improving the sensing range of mobile sensors reduces the cost of monitoring significantly. Additionally, the placement of beacons, and the communication range impact the accuracy of localization and estimation of sensor locations. Our flow control system is observed to converge and improve the coverage over time. Advisors/Committee Members: Stoleru, Radu (advisor), Welch, Jennifer (committee member), Jiang, Anxiao (Andrew) (committee member), Brumbelow, Kelly (committee member).

Subjects/Keywords: cyber-physical systems; water distribution systems; mobile sensors; wireless sensor networks; monitoring

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mahima, A. S. (2015). A Cyber-Physical Systems Approach to Water Distribution System Monitoring. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156536

Chicago Manual of Style (16^th Edition):

Mahima, Agumbe Suresh. “A Cyber-Physical Systems Approach to Water Distribution System Monitoring.” 2015. Doctoral Dissertation, Texas A&M University. Accessed April 22, 2021. http://hdl.handle.net/1969.1/156536.

MLA Handbook (7^th Edition):

Mahima, Agumbe Suresh. “A Cyber-Physical Systems Approach to Water Distribution System Monitoring.” 2015. Web. 22 Apr 2021.

Vancouver:

Mahima AS. A Cyber-Physical Systems Approach to Water Distribution System Monitoring. [Internet] [Doctoral dissertation]. Texas A&M University; 2015. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/1969.1/156536.

Council of Science Editors:

Mahima AS. A Cyber-Physical Systems Approach to Water Distribution System Monitoring. [Doctoral Dissertation]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/156536

Michigan Technological University

15. Zhang, Ji. Seismic Serviceability Assessment of Water Distribution Systems.

Degree: MS, Department of Civil and Environmental Engineering, 2014, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etd-restricted/214

► Water distribution systems are important for life saving facilities especially in the recovery after earthquakes. In this paper, a framework is discussed about seismic… (more)

Subjects/Keywords: Damage; Lifeline Systems; Networks; Seismic Fragility; Water Distribution Systems; Earthquakes; Civil Engineering

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APA (6^th Edition):

Zhang, J. (2014). Seismic Serviceability Assessment of Water Distribution Systems. (Masters Thesis). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etd-restricted/214

Chicago Manual of Style (16^th Edition):

Zhang, Ji. “Seismic Serviceability Assessment of Water Distribution Systems.” 2014. Masters Thesis, Michigan Technological University. Accessed April 22, 2021. https://digitalcommons.mtu.edu/etd-restricted/214.

MLA Handbook (7^th Edition):

Zhang, Ji. “Seismic Serviceability Assessment of Water Distribution Systems.” 2014. Web. 22 Apr 2021.

Vancouver:

Zhang J. Seismic Serviceability Assessment of Water Distribution Systems. [Internet] [Masters thesis]. Michigan Technological University; 2014. [cited 2021 Apr 22]. Available from: https://digitalcommons.mtu.edu/etd-restricted/214.

Council of Science Editors:

Zhang J. Seismic Serviceability Assessment of Water Distribution Systems. [Masters Thesis]. Michigan Technological University; 2014. Available from: https://digitalcommons.mtu.edu/etd-restricted/214

University of Kentucky

16. Hernandez Hernandez, Erika. SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS.

Degree: 2017, University of Kentucky

URL: https://uknowledge.uky.edu/ce_etds/59

► In recent years, water utilities have placed a greater emphasis on the reliability and resilience of their water distribution networks. This focus has increased due… (more)

Subjects/Keywords: Reliability; Water Distribution Networks; Segment; Valve; Model Database; Civil Engineering; Hydraulic Engineering

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APA (6^th Edition):

Hernandez Hernandez, E. (2017). SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS. (Masters Thesis). University of Kentucky. Retrieved from https://uknowledge.uky.edu/ce_etds/59

Chicago Manual of Style (16^th Edition):

Hernandez Hernandez, Erika. “SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS.” 2017. Masters Thesis, University of Kentucky. Accessed April 22, 2021. https://uknowledge.uky.edu/ce_etds/59.

MLA Handbook (7^th Edition):

Hernandez Hernandez, Erika. “SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS.” 2017. Web. 22 Apr 2021.

Vancouver:

Hernandez Hernandez E. SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS. [Internet] [Masters thesis]. University of Kentucky; 2017. [cited 2021 Apr 22]. Available from: https://uknowledge.uky.edu/ce_etds/59.

Council of Science Editors:

Hernandez Hernandez E. SEGMENT-BASED RELIABILITY ASSESSMENT FOR WATER DISTRIBUTION NETWORKS. [Masters Thesis]. University of Kentucky; 2017. Available from: https://uknowledge.uky.edu/ce_etds/59

17. JosÃ Valmir Farias Maia Junior. ComparaÃÃo de MÃtodos de Dimensionamento em Redes de DistribuiÃÃo de Ãgua.

Degree: 2012, Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em Engenharia Civil; UFC; BR

URL: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9179

►

CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior

Este trabalho apresenta um modelo computacional para o dimensionamento otimizado de mÃnimo custo em redes de distribuiÃÃo… (more)

Subjects/Keywords: Recursos hÃdricos; Abastecimento de Ãgua; Algoritmos genÃticos; water distribution networks, Genetic Algorithms, LENHSNET; ENGENHARIA CIVIL

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APA (6^th Edition):

Junior, J. V. F. M. (2012). ComparaÃÃo de MÃtodos de Dimensionamento em Redes de DistribuiÃÃo de Ãgua. (Masters Thesis). Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em Engenharia Civil; UFC; BR. Retrieved from http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9179

Chicago Manual of Style (16^th Edition):

Junior, JosÃ Valmir Farias Maia. “ComparaÃÃo de MÃtodos de Dimensionamento em Redes de DistribuiÃÃo de Ãgua.” 2012. Masters Thesis, Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em Engenharia Civil; UFC; BR. Accessed April 22, 2021. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9179.

MLA Handbook (7^th Edition):

Junior, JosÃ Valmir Farias Maia. “ComparaÃÃo de MÃtodos de Dimensionamento em Redes de DistribuiÃÃo de Ãgua.” 2012. Web. 22 Apr 2021.

Vancouver:

Junior JVFM. ComparaÃÃo de MÃtodos de Dimensionamento em Redes de DistribuiÃÃo de Ãgua. [Internet] [Masters thesis]. Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em Engenharia Civil; UFC; BR; 2012. [cited 2021 Apr 22]. Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9179.

Council of Science Editors:

Junior JVFM. ComparaÃÃo de MÃtodos de Dimensionamento em Redes de DistribuiÃÃo de Ãgua. [Masters Thesis]. Universidade Federal do CearÃ; Programa de PÃs-GraduaÃÃo em Engenharia Civil; UFC; BR; 2012. Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9179

University of Cincinnati

18. LEE, YEONGHO. MASS DISPERSION IN INTERMITTENT LAMINAR FLOW.

Degree: PhD, Engineering : Environmental Engineering, 2004, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085750678

► Mass dispersion in unsteady laminar flow is common in dead-end regions of water distribution systems. However, dispersion has not been included in network models and… (more)

▼ Mass dispersion in unsteady laminar flow is common in dead-end regions of water distribution systems. However, dispersion has not been included in network models and this omission can lead to inaccurate predictions of water quality in regions where laminar flow prevails. Incorporating dispersion in network models is a challenge because it requires solving a two-dimensional (2-D) governing equation numerically. The present work introduces and verifies a new analytical equation that can estimate the rate of dispersion in unsteady laminar flow. Existing analytical solutions for one-dimensional mass transport in steady flow were investigated. Dispersive transport of non-conservative solutes in pipe networks was found to be important when the dimensionless group m=(1+4KE/U ² ) ^1/2 >1.2, where K is reaction rate, E is dispersion rate and U is average velocity. A new analytical expression for the instantaneous rate of dispersion in unsteady laminar flow was developed. The instantaneous rate of dispersion in pulsating laminar flow through a pipe is a dynamic weighted average of two factors: (i) the dispersion memory from previous pulses with the factor of R(t)=exp(-t/τ ₀ ) where τ ₀ =a ² /16D is a Lagrangian time scale reflecting molecular diffusivity D across the pipe radius a and (ii) the nonlinear excitation from the current pulse with the factor of 1-R(t). Analytical predictions of dispersion agree well with results obtained from the 2-D governing equation for conservative solute transport in a pipe. When dimensionless average pulse duration η ≤0.025 ( η =D τ /a ² where τ=pulse duration), analytical estimates of time-averaged dispersion E in unsteady laminar flow with two or three repeating pulses are within 15% of E ₀ in steady flow with the same average velocity. For these pulse conditions, the analytical equation also agrees very well with experimental data. When η >0.0625, the steady and unsteady estimates of dispersion diverge. As η approaches one, E converges toward its maximum rate of dispersion, E ₀ (1+Θ _U ² ) where Θ _U is the coefficient of variation of velocity. A field example from EPANET demonstrated that addition of dispersion improved prediction of fluoride concentrations in dead-end pipes with laminar flow. Water utilities can improve predictions of water quality in the periphery of distribution systems by incorporating dispersive transport in their current network models. Advisors/Committee Members: Buchberger, Dr. Steven (Advisor).

Subjects/Keywords: Water distribution; Networks; Water quality; Dispersion; Advection; Models

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APA (6^th Edition):

LEE, Y. (2004). MASS DISPERSION IN INTERMITTENT LAMINAR FLOW. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085750678

Chicago Manual of Style (16^th Edition):

LEE, YEONGHO. “MASS DISPERSION IN INTERMITTENT LAMINAR FLOW.” 2004. Doctoral Dissertation, University of Cincinnati. Accessed April 22, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085750678.

MLA Handbook (7^th Edition):

LEE, YEONGHO. “MASS DISPERSION IN INTERMITTENT LAMINAR FLOW.” 2004. Web. 22 Apr 2021.

Vancouver:

LEE Y. MASS DISPERSION IN INTERMITTENT LAMINAR FLOW. [Internet] [Doctoral dissertation]. University of Cincinnati; 2004. [cited 2021 Apr 22]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085750678.

Council of Science Editors:

LEE Y. MASS DISPERSION IN INTERMITTENT LAMINAR FLOW. [Doctoral Dissertation]. University of Cincinnati; 2004. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085750678

19. Moisés Menezes Salvino. Modelagem computacional visando a reabilitação de redes hidráulicas.

Degree: 2012, Universidade Federal da Paraíba

URL: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2421

►

Este trabalho de tese tem por objetivo desenvolver um modelo computacional robusto com vistas à calibração multivariada de modelos hidráulicos de sistemas de distribuição de… (more)

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Este trabalho de tese tem por objetivo desenvolver um modelo computacional robusto com vistas à calibração multivariada de modelos hidráulicos de sistemas de distribuição de água, possibilitando a identificação de possíveis irregularidades como: vazamentos, obstruções nas tubulações, válvulas inoperantes ou estranguladas e incompatibilidades na modelagem referente aos dados reais. O modelo LenhsCalibra software desenvolvido nesta tese para aplicação do algoritmo de calibração multivariado proposto incorpora duas alternativas distintas para calibração de redes de distribuição. A primeira alternativa utiliza um Algoritmo Iterativo, a outra é realizada através dos Algoritmos Genéticos Multiobjetivo. O processo de calibração tem por objetivo, utilizando redes modeladas no simulador hidráulico Epanet, ajustar as diferenças das variáveis de estado da rede produzindo informações compatíveis com suas respectivas redes reais. O processo de calibração proposto permite utilizar até sete variáveis: a rugosidade, a demanda, a perda de carga singular, a cota topográfica, vazamentos, diâmetros e válvulas, simultaneamente, ou qualquer combinação delas. Dependendo das características da rede a ser modelada e calibrada é possível definir limites para as variáveis e escolher quais variáveis calibrar. A aplicação experimental foi realizada no Laboratório de Eficiência Energética e Hidráulica em Saneamento da UFPB através do seu Sistema Piloto de Distribuição de Água. Os resultados mostraram que o algoritmo tem uma boa convergência com relação ao tempo de processamento e a aproximação dos dados medidos e calculados, assim como possibilita a identificação de problemas mediante análise dos parâmetros resultantes da calibração, proporcionando assim subsídios para uma reabilitação mais precisa.

This thesis aims to develop a robust computational model with a view to multivariate calibration of hydraulic models of water distribution systems, enabling the identification of possible irregularities such as leaks, obstructions in the pipes, valves, dead or strangled and incompatibilities regarding the modeling to real data. The model LenhsCalibra - software developed in this thesis for the application of multivariate calibration algorithm proposed - incorporates two distinct alternatives for calibration of distribution networks. The first alternative uses an iterative algorithm, the other is carried out by Multiobjective Genetic Algorithms. The calibration process aims at using networks modeled in Epanet hydraulic simulator, adjust the differences of state variables of the network giving information consistent with their respective real networks. The calibration process allows the proposed use up to seven variables: the roughness, the demand, the pressure drop is unique, the topographic, leaks, valve diameters and, simultaneously, or any combination thereof. Depending on the characteristics of the network to be modeled and calibrated you can set limits for the variables and choose which variables to calibrate. The experimental application was…

Advisors/Committee Members: Heber Pimentel Gomes.

Subjects/Keywords: Algoritmos Genéticos; EPANET; Reabilitação; Redes de Distribuição de Água; Calibração; ENGENHARIA MECANICA; Water Distribution Networks; Calibration; Rehabilitation; EPANET; Genetic Algorithms

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Salvino., M. M. (2012). Modelagem computacional visando a reabilitação de redes hidráulicas. (Thesis). Universidade Federal da Paraíba. Retrieved from http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2421

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Salvino., Moisés Menezes. “Modelagem computacional visando a reabilitação de redes hidráulicas.” 2012. Thesis, Universidade Federal da Paraíba. Accessed April 22, 2021. http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2421.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Salvino., Moisés Menezes. “Modelagem computacional visando a reabilitação de redes hidráulicas.” 2012. Web. 22 Apr 2021.

Vancouver:

Salvino. MM. Modelagem computacional visando a reabilitação de redes hidráulicas. [Internet] [Thesis]. Universidade Federal da Paraíba; 2012. [cited 2021 Apr 22]. Available from: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2421.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Salvino. MM. Modelagem computacional visando a reabilitação de redes hidráulicas. [Thesis]. Universidade Federal da Paraíba; 2012. Available from: http://bdtd.biblioteca.ufpb.br/tde_busca/arquivo.php?codArquivo=2421

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

20. Feng, Nina. Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks.

Degree: 2019, University of Waterloo

URL: http://hdl.handle.net/10012/14549

► Access to potable drinking water is a necessity and basic human right. Most North Americans obtain treated water through water distribution networks, an essential part… (more)

▼ Access to potable drinking water is a necessity and basic human right. Most North Americans obtain treated water through water distribution networks, an essential part of municipal infrastructure that is subject to decay and degradation. Amongst the factors influencing pipe failure are events that trigger abrupt pressure changes, or transients, which can cause pipe breakages in the short term, and general fatigue in the long term. The ability to quantify these transients as they occur is important for effective asset management, and for preventing and mitigating the occurrence of failure. Current practices take a largely reactive approach to event detection, and few systems capable of real-time transient detection have ever been implemented. This research addresses the need for an online monitoring framework aimed towards understanding pressure transient effects and behaviour. The proposed system uses an Internet of Things approach, combining pressure sensors with Raspberry Pi computers, as well as open-source tools that transmit and display the data. The data analysis combines computationally inexpensive methods in order to achieve an accurate decision-making tool for both transient detection and abnormal transient risk identification. The techniques used include different filtering and detrending methods, feature extraction for dimensionality reduction, three-sigma statistical process control, and classification using voting methods. The process also includes a second process, based on statistical process control and trained using transient data identified in the original process, in order to assign a risk for a transient to cause damage, as well as identify transients that are particularly severe. Data was collected from a unique laboratory water distribution network as well as a field installation in Guelph, Ontario. The results showed that the framework achieves real-time transient identification with reasonable detection and error rates. Further analysis illustrated the effect of factors such as transient source location, active flow in the pipes, and transient type, on transient propagation and detection. The performance of the framework proves the concept of IoT-based systems for pressure monitoring and event detection in municipal water infrastructure.

Subjects/Keywords: pressure transients; water distribution networks; condition monitoring; internet of things; smart infrastructure; statistical process control; anomaly detection

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Feng, N. (2019). Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/14549

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Feng, Nina. “Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks.” 2019. Thesis, University of Waterloo. Accessed April 22, 2021. http://hdl.handle.net/10012/14549.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Feng, Nina. “Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks.” 2019. Web. 22 Apr 2021.

Vancouver:

Feng N. Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks. [Internet] [Thesis]. University of Waterloo; 2019. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10012/14549.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Feng N. Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks. [Thesis]. University of Waterloo; 2019. Available from: http://hdl.handle.net/10012/14549

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

21. Tourigny, Alexandre. Agent-Based Modelling as a Decision Support Tool for Water Resources Planning and Management .

Degree: Civil Engineering, Queens University

URL: http://hdl.handle.net/1974/23958

► The research presented in this thesis focuses on developing a water-use forecasting method using an agent-based model. The novelty of this method is that it… (more)

Subjects/Keywords: Water Distribution Networks ; Agent Based Model ; Energy Use

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tourigny, A. (n.d.). Agent-Based Modelling as a Decision Support Tool for Water Resources Planning and Management . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/23958

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tourigny, Alexandre. “Agent-Based Modelling as a Decision Support Tool for Water Resources Planning and Management .” Thesis, Queens University. Accessed April 22, 2021. http://hdl.handle.net/1974/23958.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tourigny, Alexandre. “Agent-Based Modelling as a Decision Support Tool for Water Resources Planning and Management .” Web. 22 Apr 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Tourigny A. Agent-Based Modelling as a Decision Support Tool for Water Resources Planning and Management . [Internet] [Thesis]. Queens University; [cited 2021 Apr 22]. Available from: http://hdl.handle.net/1974/23958.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Tourigny A. Agent-Based Modelling as a Decision Support Tool for Water Resources Planning and Management . [Thesis]. Queens University; Available from: http://hdl.handle.net/1974/23958

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

22. Vetrano, Lorenzo. Il controllo in tempo reale delle pressioni nelle reti di acquedotto ai fini della riduzione delle perdite idriche.

Degree: 2012, Università degli Studi di Catania

URL: http://hdl.handle.net/10761/1194

► Le perdite idriche rappresentano oggi il principale problema da affrontare per una corretta gestione delle reti di acquedotto. Ingenti perdite provocano infatti, nei sistemi acquedottistici,… (more)

▼ Le perdite idriche rappresentano oggi il principale problema da affrontare per una corretta gestione delle reti di acquedotto. Ingenti perdite provocano infatti, nei sistemi acquedottistici, forti squilibri in termini economici, sociali e ambientali. In passato il contenimento delle perdite veniva condotto tramite strategie puntuali, ovvero ricercando e riparando i singoli punti di perdita; tale approccio, sicuramente efficace soprattutto per le perdite ingenti, risulta caratterizzato da costi estremamente elevati. Alle tecniche tradizionali è possibile associare strategie di contenimento delle perdite che consentono di ottenere risultati distribuiti su tutta la rete. Sfruttando la relazione diretta esistente tra le perdite idriche e le pressioni di esercizio nelle reti di acquedotto, è possibile mettere a punto metodologie che consentono di ottenere un notevole risparmio idrico diffuso su tutta la rete, mediante l inserimento, in alcuni tratti, di apposite valvole di riduzione di pressione. Nelle tecniche di contenimento delle pressioni particolare attenzione va posta in merito al posizionamento ed alla regolazione ottimale delle valvole di riduzione della pressione. A tal fine sono stati utilizzati metodi di ottimizzazione, di varia natura, ed è stato mostrato come sia possibile determinare la posizione, ovvero il ramo di inserimento, e la taratura delle valvole di riduzione di pressione, tali da minimizzare le perdite idriche in rete, nel rispetto dei vincoli sulle pressioni minime di esercizio. Tali tecniche di ottimizzazione sono però basate sull ipotesi di conoscenza delle condizioni di erogazione del sistema nel tempo, ovvero della distribuzione spaziale e temporale delle portate ai nodi e delle variazioni dei livelli idrici nei serbatoi, condizione non soddisfatta nei sistemi idrici reali. Al fine di risolvere il problema della regolazione delle valvole di riduzione di pressione, è possibile adottare tecniche di controllo in tempo reale che consentano di settare i dispositivi in maniera continua e automatica, sulla base di sole misure di pressione, garantendo così, al variare delle condizioni di erogazione, il mantenimento dei valori desiderati del carico piezometrico nei nodi di controllo della rete. Le tecniche di controllo in tempo reale (RTC) prevedono l implementazione di soluzioni specifiche, dall alto contenuto tecnologico, in funzione delle caratteristiche del processo che si intende controllare; risulta necessaria, pertanto, una preventiva progettazione dei componenti hardware e software. Tra queste la scelta delle unità logiche di controllo costituisce il principale passo nell implementazione di un sistema di RTC. Le unità logiche proporzionali, grazie alle intrinseche qualità di affidabilità e di semplicità d uso, si prestano bene al controllo delle valvole di riduzione di pressione nelle reti di acquedotto. Per garantire regolazioni efficaci del processo di controllo, è necessaria una preventiva calibrazione delle unità logiche in funzione delle caratteristiche del sistema da controllare. Nella…

Subjects/Keywords: Area 08 - Ingegneria civile e architettura; pressure control, real time control, valves, water distribution networks, leakage reduction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vetrano, L. (2012). Il controllo in tempo reale delle pressioni nelle reti di acquedotto ai fini della riduzione delle perdite idriche. (Thesis). Università degli Studi di Catania. Retrieved from http://hdl.handle.net/10761/1194

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vetrano, Lorenzo. “Il controllo in tempo reale delle pressioni nelle reti di acquedotto ai fini della riduzione delle perdite idriche.” 2012. Thesis, Università degli Studi di Catania. Accessed April 22, 2021. http://hdl.handle.net/10761/1194.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vetrano, Lorenzo. “Il controllo in tempo reale delle pressioni nelle reti di acquedotto ai fini della riduzione delle perdite idriche.” 2012. Web. 22 Apr 2021.

Vancouver:

Vetrano L. Il controllo in tempo reale delle pressioni nelle reti di acquedotto ai fini della riduzione delle perdite idriche. [Internet] [Thesis]. Università degli Studi di Catania; 2012. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10761/1194.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vetrano L. Il controllo in tempo reale delle pressioni nelle reti di acquedotto ai fini della riduzione delle perdite idriche. [Thesis]. Università degli Studi di Catania; 2012. Available from: http://hdl.handle.net/10761/1194

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

23. Salvino., Moisés Menezes. Modelagem computacional visando a reabilitação de redes hidráulicas.

Degree: 2012, Universidade Federal da Paraíba; Programa de Pós-Graduação em Engenharia Mecânica; UFPB; BR; Engenharia Mecânica

URL: https://repositorio.ufpb.br/jspui/handle/tede/5334

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Made available in DSpace… (more)

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Made available in DSpace on 2015-05-08T14:59:42Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 5383084 bytes, checksum: a1ad7fe923d3922eba517c7aa27cfa01 (MD5) Previous issue date: 2012-06-27

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES

This thesis aims to develop a robust computational model with a view to multivariate calibration of hydraulic models of water distribution systems, enabling the identification of possible irregularities such as leaks, obstructions in the pipes, valves, dead or strangled and incompatibilities regarding the modeling to real data. The model LenhsCalibra - software developed in this thesis for the application of multivariate calibration algorithm proposed - incorporates two distinct alternatives for calibration of distribution networks. The first alternative uses an iterative algorithm, the other is carried out by Multiobjective Genetic Algorithms. The calibration process aims at using networks modeled in Epanet hydraulic simulator, adjust the differences of state variables of the network giving information consistent with their respective real networks. The calibration process allows the proposed use up to seven variables: the roughness, the demand, the pressure drop is unique, the topographic, leaks, valve diameters and, simultaneously, or any combination thereof. Depending on the characteristics of the network to be modeled and calibrated you can set limits for the variables and choose which variables to calibrate. The experimental application was carried out at the Laboratory for Energy Efficiency and Water Sanitation UFPB through its Pilot System for Water Distribution. The results showed that the algorithm has good convergence with respect to processing time and the approximation of the measured and calculated values, as well as enables the identification of problems by analyzing the parameters resulting from calibration, thus providing support for a more accurate rehabilitation.

Este trabalho de tese tem por objetivo desenvolver um modelo computacional robusto com vistas à calibração multivariada de modelos hidráulicos de sistemas de distribuição de água, possibilitando a identificação de possíveis irregularidades como: vazamentos, obstruções nas tubulações, válvulas inoperantes ou estranguladas e incompatibilidades na modelagem referente aos dados reais. O modelo LenhsCalibra software desenvolvido nesta tese para aplicação do algoritmo de calibração multivariado proposto incorpora duas alternativas distintas para calibração de redes de distribuição. A primeira alternativa utiliza um Algoritmo Iterativo, a outra é realizada através dos Algoritmos Genéticos Multiobjetivo. O processo de calibração tem por objetivo, utilizando redes modeladas no…

Advisors/Committee Members: Gomes, Heber Pimentel.

Subjects/Keywords: Calibração; Redes de distribuição de água; Reabilitação; Algoritmos genéticos; Calibration; Water distribution networks; Rehabilitation; Genetic algorithms; ENGENHARIAS::ENGENHARIA MECANICA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Salvino., M. M. (2012). Modelagem computacional visando a reabilitação de redes hidráulicas. (Doctoral Dissertation). Universidade Federal da Paraíba; Programa de Pós-Graduação em Engenharia Mecânica; UFPB; BR; Engenharia Mecânica. Retrieved from https://repositorio.ufpb.br/jspui/handle/tede/5334

Chicago Manual of Style (16^th Edition):

Salvino., Moisés Menezes. “Modelagem computacional visando a reabilitação de redes hidráulicas.” 2012. Doctoral Dissertation, Universidade Federal da Paraíba; Programa de Pós-Graduação em Engenharia Mecânica; UFPB; BR; Engenharia Mecânica. Accessed April 22, 2021. https://repositorio.ufpb.br/jspui/handle/tede/5334.

MLA Handbook (7^th Edition):

Salvino., Moisés Menezes. “Modelagem computacional visando a reabilitação de redes hidráulicas.” 2012. Web. 22 Apr 2021.

Vancouver:

Salvino. MM. Modelagem computacional visando a reabilitação de redes hidráulicas. [Internet] [Doctoral dissertation]. Universidade Federal da Paraíba; Programa de Pós-Graduação em Engenharia Mecânica; UFPB; BR; Engenharia Mecânica; 2012. [cited 2021 Apr 22]. Available from: https://repositorio.ufpb.br/jspui/handle/tede/5334.

Council of Science Editors:

Salvino. MM. Modelagem computacional visando a reabilitação de redes hidráulicas. [Doctoral Dissertation]. Universidade Federal da Paraíba; Programa de Pós-Graduação em Engenharia Mecânica; UFPB; BR; Engenharia Mecânica; 2012. Available from: https://repositorio.ufpb.br/jspui/handle/tede/5334

24. Sanders Neto, Vicente de Castro. Modelagem computacional do transitório hidráulico de redes de distribuição de água utilizando o método lagrangeano das ondas características.

Degree: 2019, Brazil

URL: http://www.repositorio.ufc.br/handle/riufc/40019

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Submitted by Edineuza Silva ([email protected]) on 2019-02-21T13:31:53Z No. of bitstreams: 1 2019_dis_vcsneto.pdf: 4319232 bytes, checksum: 64490518cd4d4305ba2e347d28b3b8aa (MD5)

Rejected by Marlene Sousa ([email protected]), reason: Prezado Vicente,… (more)

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Submitted by Edineuza Silva ([email protected]) on 2019-02-21T13:31:53Z No. of bitstreams: 1 2019_dis_vcsneto.pdf: 4319232 bytes, checksum: 64490518cd4d4305ba2e347d28b3b8aa (MD5)

Rejected by Marlene Sousa ([email protected]), reason: Prezado Vicente, Existe a RESOLUÇÃO No 17/CEPE, 02 DE OUTUBRO DE 2017, que estabelece a normalização das dissertações e teses da UFC, em suas paginas pré-textuais e lista de referencias, pelas regras da ABNT. Por esse motivo, sugerimos adequar seu trabalho ao modelo do template, disponível em: http://www.biblioteca.ufc.br/educacao-de-usuarios/templates/ Vamos agora as correções, que vc deve realizar, sempre de acordo com o template: 1. Retirar a numeração das paginas pré-textuais. Elas são contadas, mas só devem ser numeradas, as folhas a partir da INTRODUÇÃO. 2. Na folha de rosto, que segue a capa, nenhuma informação deve ficar em negrito. Favor retirar. 3. Mesmo não sendo obrigatório, sugerimos colocar a data da defesa na folha de aprovação. Essa informação será importante para seu trabalho ser localizado em nossa base de dados. Nessa folha nenhuma informação deve ficar em negrito. Favor retirar. 4. No RESUMO e ABSTRACT coloque os termos Palavras-chave e Keywords em negrito. 5. Ordem seqüencial a ser observada nas folhas: LISTA DE FIGURAS e LISTA DE TABELAS. 6. Nas listas de FIGURAS e TABELAS observe o alinhamento da margem dos títulos das figuras e tabelas, de modo que ao aumentar o número de dígitos das figuras elas fiquem no mesmo alinhamento de quando tinham um dígito. Ex Figura 1 e 10. Quando o título da figura ou da tabela não couber na mesma linha, sua continuação deve ficar na mesma margem da primeira letra da linha de cima e não voltar para a margem do F de Figura ou do T de Tabela. 7. Use o termo LISTA DE ABREVIATURAS E SIGLAS. 8. Faça a LISTA DE SÍMBOLOS em folha separada. 9. No SUMÁRIO e no texto a INTRODUÇÃO não deve iniciar na pagina 1, como vc colocou. Vc deve contar as folhas pré-textuais e numerá-las a partir da Introdução. A ficha catalográfica não é contada, pois ela é a única que fica no verso da folha. No sumário vc deve observar o alinhamento, para quando crescerem os dígitos das seções fique o mesmo alinhamento de quando tinha apenas um dígito. Inclusive quando o titulo não couber na mesma linha, sua continuação deve ficar na mesma margem da primeira letra da linha de cima. A palavra que deve ser usada é REFERÊNCIAS e não referencias bibliográficas. REFERENCIAS e APENDICES devem ficar na margem abaixo da letra R de Recomendações. 10. No texto, alterar a numeração das folhas levando em consideração as pré-textuais. 11. Na lista de REFERENCIAS a palavra deve ser centralizada na folha e sem o termo bibliográficas. Retirar a cor azul da lista. Quando referenciamos, o nome dos autores, estes devem ser citados pelo ultimo sobrenome, seguido do prenome sem a preposição. Ex. DE CASTRO, M. A. H. Forma correta: CASTRO, M. A. H. de. Quando abreviar nome de autor deixe espaço depois do ponto relativo a abreviação. Confira em toda a lista, pois…

Advisors/Committee Members: Castro, Marco Aurélio Holanda de.

Subjects/Keywords: Recursos hídricos; Distribuição de água; Golpe de ariete; Wave characteristics method; Water distribution networks; Method of characteristics

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sanders Neto, V. d. C. (2019). Modelagem computacional do transitório hidráulico de redes de distribuição de água utilizando o método lagrangeano das ondas características. (Masters Thesis). Brazil. Retrieved from http://www.repositorio.ufc.br/handle/riufc/40019

Chicago Manual of Style (16^th Edition):

Sanders Neto, Vicente de Castro. “Modelagem computacional do transitório hidráulico de redes de distribuição de água utilizando o método lagrangeano das ondas características.” 2019. Masters Thesis, Brazil. Accessed April 22, 2021. http://www.repositorio.ufc.br/handle/riufc/40019.

MLA Handbook (7^th Edition):

Sanders Neto, Vicente de Castro. “Modelagem computacional do transitório hidráulico de redes de distribuição de água utilizando o método lagrangeano das ondas características.” 2019. Web. 22 Apr 2021.

Vancouver:

Sanders Neto VdC. Modelagem computacional do transitório hidráulico de redes de distribuição de água utilizando o método lagrangeano das ondas características. [Internet] [Masters thesis]. Brazil; 2019. [cited 2021 Apr 22]. Available from: http://www.repositorio.ufc.br/handle/riufc/40019.

Council of Science Editors:

Sanders Neto VdC. Modelagem computacional do transitório hidráulico de redes de distribuição de água utilizando o método lagrangeano das ondas características. [Masters Thesis]. Brazil; 2019. Available from: http://www.repositorio.ufc.br/handle/riufc/40019

25. Ferreira, Italo Ruan Dantas. Estudo da calibração de redes de distribuição de água submetidas ao regime transiente utilizando algoritmos genéticos e diferentes funções objetivo.

Degree: 2019, Brazil

URL: http://www.repositorio.ufc.br/handle/riufc/44483

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In this dissertation it was carried out on how the calibration of the roughness of pipes of water distribution networks with different objective functions takes place. It is widely known the difficulties that are experienced when there is no knowledge of the physical parameters of a network, especially when it is subject to transient regimes. When applying Genetic Algorithms in two networks submitted to a transient with different objective functions, it was aimed to obtain parameters, such as permanent and transient hydraulic flows and loads, to apply and obtain the values of three objective functions previously selected and modified to better represent the objectives of the study, when used to calibrate the roughness from nodes and selected sections of the studied networks, the best three solutions of each one being analyzed. Two hypothetical networks with known parameters were used here, applying a hydraulic transient by demand variation. The three objective functions chosen represent the quadratic difference between the actual and simulated loads (FO1), the quadratic difference between the actual and simulated flows (FO2) and the two previous differences summed using individual weights for each (FO3). Four nodes were selected in each of the nets, each with a striking characteristic, being the largest and the smallest distance from the node to the supply reservoir of the network, a node with a large number of tubes connected to it and a node that was at the end of the net. The results show that FO1 obtained a more important performance in 3 of the 4 groups analyzed, when considering the Relative Mean Error (RMS) in the roughness calibration, besides the values of hydraulic load and flow in permanent and transient regime, as well it can be seen that the hydraulic load is better shown to represent these points studied. When looking at the three best solutions of each objective function, it is noted that there is no direct relationship between the lower function value and the production of a smaller error, especially in the roughness calibration, besides that the roughness error is considerably higher…

Advisors/Committee Members: Araújo, John Kenedy de.

Subjects/Keywords: Recursos hídricos; Transitórios hidráulicos; Água - Distribuição; Algoritmos genéticos; Objective function; Roughness; Hydraulic transient; Water distribution networks; Genetic algorithms

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ferreira, I. R. D. (2019). Estudo da calibração de redes de distribuição de água submetidas ao regime transiente utilizando algoritmos genéticos e diferentes funções objetivo. (Masters Thesis). Brazil. Retrieved from http://www.repositorio.ufc.br/handle/riufc/44483

Chicago Manual of Style (16^th Edition):

Ferreira, Italo Ruan Dantas. “Estudo da calibração de redes de distribuição de água submetidas ao regime transiente utilizando algoritmos genéticos e diferentes funções objetivo.” 2019. Masters Thesis, Brazil. Accessed April 22, 2021. http://www.repositorio.ufc.br/handle/riufc/44483.

MLA Handbook (7^th Edition):

Ferreira, Italo Ruan Dantas. “Estudo da calibração de redes de distribuição de água submetidas ao regime transiente utilizando algoritmos genéticos e diferentes funções objetivo.” 2019. Web. 22 Apr 2021.

Vancouver:

Ferreira IRD. Estudo da calibração de redes de distribuição de água submetidas ao regime transiente utilizando algoritmos genéticos e diferentes funções objetivo. [Internet] [Masters thesis]. Brazil; 2019. [cited 2021 Apr 22]. Available from: http://www.repositorio.ufc.br/handle/riufc/44483.

Council of Science Editors:

Ferreira IRD. Estudo da calibração de redes de distribuição de água submetidas ao regime transiente utilizando algoritmos genéticos e diferentes funções objetivo. [Masters Thesis]. Brazil; 2019. Available from: http://www.repositorio.ufc.br/handle/riufc/44483

26. Trifunovic, N. Pattern recognition for reliability assessment of water distribution networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft.

Degree: 2012, CRC Press/Balkema

URL: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/7139

► The study presented in this manuscript investigates the patterns that describereliability of water distribution networks focusing to the node connectivity, energy balance, and economics of… (more)

Subjects/Keywords: water distribution networks; reliability; decision support systems

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Trifunovic, N. (2012). Pattern recognition for reliability assessment of water distribution networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft. (Doctoral Dissertation). CRC Press/Balkema. Retrieved from http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/7139

Chicago Manual of Style (16^th Edition):

Trifunovic, N. “Pattern recognition for reliability assessment of water distribution networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft.” 2012. Doctoral Dissertation, CRC Press/Balkema. Accessed April 22, 2021. http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/7139.

MLA Handbook (7^th Edition):

Trifunovic, N. “Pattern recognition for reliability assessment of water distribution networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft.” 2012. Web. 22 Apr 2021.

Vancouver:

Trifunovic N. Pattern recognition for reliability assessment of water distribution networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft. [Internet] [Doctoral dissertation]. CRC Press/Balkema; 2012. [cited 2021 Apr 22]. Available from: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/7139.

Council of Science Editors:

Trifunovic N. Pattern recognition for reliability assessment of water distribution networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft. [Doctoral Dissertation]. CRC Press/Balkema; 2012. Available from: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/7139

Indian Institute of Science

27. Kumar, M Prasanna. Studies On Application Of Control Systems For Urban Water Networks.

Degree: PhD, Faculty of Engineering, 2010, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/874

► Management and supply of water in an urban water distribution system is a complex process, which include various complexities like pressure variations across the network… (more)

▼ Management and supply of water in an urban water distribution system is a complex process, which include various complexities like pressure variations across the network depending on topography, demand variations depending on customers’ requirement and unaccounted water etc. Applying automatic control methods to water distribution systems is a way to improve the management of water distribution. There have been some attempts in recent years to develop optimal control algorithms to assist in the operation of complex water distribution systems. The difficulties involved by these hydraulic systems such as non-linearity, and diurnal demand patterns make the choice of a suitable automatic control method a challenge. For this purpose, this study intends to investigate the applicability of different controllers which would be able to meet the targets as quickly as possible and without creating undue transients. As a first step towards application of different controllers, PD and PID linear controllers have been designed for pump control and valve control in water distribution systems. Then a Dynamic Inversion based nonlinear controller has been designed by considering the non-linearities in the system. Here, different cases considering the effects of initial conditions used, linearization methods used, time step used for integration and selection of gains etc., have been studied before arriving at best controller. These controllers have been designed for both the flow control problems and level control problems. It is found that Dynamic Inversion-based nonlinear controller outperforms other controllers. It is well known that the performance of controllers is much dependent on the tuning of the gains (parameters). Thus in this study various alternative techniques such as Ziegler – Nichols rules (ZNPID), Genetic algorithms (GAPID) and fuzzy algorithms (FZPID) have been studied and a comparative study has been made Although with all the three gain tuning methods, required states have reached their target values, but the responses vary much in reaching to final targets. The self-tuned FZPID controller outperforms other two controllers, especially with regard to overshoots and the time taken to tune the gains for each problem. Further, an optimal DI controller is developed for the over determined case with more controls and less targets. Energy loss is considered as an objective function and normal DI controller equations are considered as constraints. Hence, an attempt is made to reduce the energy minimization in water distribution system by formulating an optimal control problem using optimal Dynamic Inversion concept. Finally, leakage reduction model is developed based on excessive pressure minimization problem by locating valves optimally as well as by setting valves optimally. For this purpose, optimization problem is solved using Pattern search algorithms and hydraulic analysis is carried out using EPANET program. Advisors/Committee Members: Kumar, M S Mohan (advisor).

Subjects/Keywords: Water Supply; Water Distribution Network; Dynamic Inversion; Water Distribution System - Control Systems; Hydraulic Modeling; Water Networks - Controllers; Water Supply Networks - Leakage Control; Water Distribution Systems (WDS); Proportional–Integral–Derivative Controller; PID Controller; Water Networks; Hydrology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kumar, M. P. (2010). Studies On Application Of Control Systems For Urban Water Networks. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/874

Chicago Manual of Style (16^th Edition):

Kumar, M Prasanna. “Studies On Application Of Control Systems For Urban Water Networks.” 2010. Doctoral Dissertation, Indian Institute of Science. Accessed April 22, 2021. http://etd.iisc.ac.in/handle/2005/874.

MLA Handbook (7^th Edition):

Kumar, M Prasanna. “Studies On Application Of Control Systems For Urban Water Networks.” 2010. Web. 22 Apr 2021.

Vancouver:

Kumar MP. Studies On Application Of Control Systems For Urban Water Networks. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2010. [cited 2021 Apr 22]. Available from: http://etd.iisc.ac.in/handle/2005/874.

Council of Science Editors:

Kumar MP. Studies On Application Of Control Systems For Urban Water Networks. [Doctoral Dissertation]. Indian Institute of Science; 2010. Available from: http://etd.iisc.ac.in/handle/2005/874

University of Exeter

28. Romano, Michele. Near real-time detection and approximate location of pipe bursts and other events in water distribution systems.

Degree: PhD, 2012, University of Exeter

URL: http://hdl.handle.net/10871/9862

► The research work presented in this thesis describes the development and testing of a new data analysis methodology for the automated near real-time detection and… (more)

▼ The research work presented in this thesis describes the development and testing of a new data analysis methodology for the automated near real-time detection and approximate location of pipe bursts and other events which induce similar abnormal pressure/flow variations (e.g., unauthorised consumptions, equipment failures, etc.) in Water Distribution Systems (WDSs). This methodology makes synergistic use of several self-learning Artificial Intelligence (AI) and statistical/geostatistical techniques for the analysis of the stream of data (i.e., signals) collected and communicated on-line by the hydraulic sensors deployed in a WDS. These techniques include: (i) wavelets for the de-noising of the recorded pressure/flow signals, (ii) Artificial Neural Networks (ANNs) for the short-term forecasting of future pressure/flow signal values, (iii) Evolutionary Algorithms (EAs) for the selection of optimal ANN input structure and parameters sets, (iv) Statistical Process Control (SPC) techniques for the short and long term analysis of the burst/other event-induced pressure/flow variations, (v) Bayesian Inference Systems (BISs) for inferring the probability of a burst/other event occurrence and raising the detection alarms, and (vi) geostatistical techniques for determining the approximate location of a detected burst/other event. The results of applying the new methodology to the pressure/flow data from several District Metered Areas (DMAs) in the United Kingdom (UK) with real-life bursts/other events and simulated (i.e., engineered) burst events are also reported in this thesis. The results obtained illustrate that the developed methodology allowed detecting the aforementioned events in a fast and reliable manner and also successfully determining their approximate location within a DMA. The results obtained additionally show the potential of the methodology presented here to yield substantial improvements to the state-of-the-art in near real-time WDS incident management by enabling the water companies to save water, energy, money, achieve higher levels of operational efficiency and improve their customer service. The new data analysis methodology developed and tested as part of the research work presented in this thesis has been patented (International Application Number: PCT/GB2010/000961).

Subjects/Keywords: 628.1; Detection and Approximate Location of Pipe Bursts and Other Events in Water Distribution Systems; Wavelet Analysis; Artificial Neural Networks; Evolutionary Algorithms; Statistical Process Control; Bayesian Networks; Geostatistical Techniques

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Romano, M. (2012). Near real-time detection and approximate location of pipe bursts and other events in water distribution systems. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/9862

Chicago Manual of Style (16^th Edition):

Romano, Michele. “Near real-time detection and approximate location of pipe bursts and other events in water distribution systems.” 2012. Doctoral Dissertation, University of Exeter. Accessed April 22, 2021. http://hdl.handle.net/10871/9862.

MLA Handbook (7^th Edition):

Romano, Michele. “Near real-time detection and approximate location of pipe bursts and other events in water distribution systems.” 2012. Web. 22 Apr 2021.

Vancouver:

Romano M. Near real-time detection and approximate location of pipe bursts and other events in water distribution systems. [Internet] [Doctoral dissertation]. University of Exeter; 2012. [cited 2021 Apr 22]. Available from: http://hdl.handle.net/10871/9862.

Council of Science Editors:

Romano M. Near real-time detection and approximate location of pipe bursts and other events in water distribution systems. [Doctoral Dissertation]. University of Exeter; 2012. Available from: http://hdl.handle.net/10871/9862

University of Alberta

29. Stark, Harold Lorenz. Application of artificial neural networks to water demand modelling.

Degree: MSin Environmental Science, Department of Civil and Environmental Engineering, 2002, University of Alberta

URL: https://era.library.ualberta.ca/files/cf95jd136

"Spring 2002"

Subjects/Keywords: Water utilities – Computer networks – Alberta – Edmonton.; Water-supply – Alberta – Edmonton – Forecasting.; Water – Distribution – Computer networks.; Water – Distribution – Forecasting.; Water-supply – Computer networks – Alberta – Edmonton.; Neural networks (Computer science)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Stark, H. L. (2002). Application of artificial neural networks to water demand modelling. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/cf95jd136

Chicago Manual of Style (16^th Edition):

Stark, Harold Lorenz. “Application of artificial neural networks to water demand modelling.” 2002. Masters Thesis, University of Alberta. Accessed April 22, 2021. https://era.library.ualberta.ca/files/cf95jd136.

MLA Handbook (7^th Edition):

Stark, Harold Lorenz. “Application of artificial neural networks to water demand modelling.” 2002. Web. 22 Apr 2021.

Vancouver:

Stark HL. Application of artificial neural networks to water demand modelling. [Internet] [Masters thesis]. University of Alberta; 2002. [cited 2021 Apr 22]. Available from: https://era.library.ualberta.ca/files/cf95jd136.

Council of Science Editors:

Stark HL. Application of artificial neural networks to water demand modelling. [Masters Thesis]. University of Alberta; 2002. Available from: https://era.library.ualberta.ca/files/cf95jd136

30. Manoel Barrêto Júnior. Otimização de um sistema de distribuição predial de água fria: estudo de caso.

Degree: 2006, Universidade Federal do Rio Grande do Norte

URL: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1181 ; http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1182

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Esta Dissertação apresenta uma metodologia para a otimização de um sistema de distribuição predial de água fria. Trata-se de um estudo de caso aplicado ao… (more)

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Esta Dissertação apresenta uma metodologia para a otimização de um sistema de distribuição predial de água fria. Trata-se de um estudo de caso aplicado ao Condomínio Residencial Búzios Tropical, localizado na Praia de Búzios, município de Nísia Floresta, litoral leste do Estado do Rio Grande do Norte, distante vinte quilômetros de Natal. O dimensionamento de redes de distribuição predial de água fria segundo os critérios da Norma NBR 5626 da ABNT - Associação Brasileira de Normas Técnicas, não garante que a solução encontrada seja a solução ótima de menor custo. Ë necessária a utilização de uma metodologia para otimização, que nos forneça, entre todas as soluções possíveis, a solução de custo mínimo. No processo de otimização do sistema de distribuição predial do Condomínio Búzios Tropical, é utilizado o Método Granados, que é um algoritmo iterativo de otimização, baseado na Programação Dinâmica, que fornece a rede de custo mínimo, em função da cota piezométrica do reservatório. Para a aplicação desse Método a redes ramificadas, é utilizado um programa de computador em linguagem C. Esse processo é dividido em duas etapas: obtenção da solução prévia e redução da cota piezométrica de cabeceira. Na obtenção da solução prévia são utilizados os menores diâmetros possíveis que garantam o limite de velocidade máxima e os requisitos de pressões mínimas. A cota piezométrica de cabeceira é elevada ficticiamente para garantir esses requisitos. Na segunda etapa do Método Granados é utilizado um processo iterativo, cujo objetivo é reduzir gradualmente a cota de cabeceira, considerando a substituição de trechos da tubulação da rede pelos diâmetros subseqüentes, considerando um acréscimo mínimo de custo para a rede. A mudança de diâmetro é feita no trecho ótimo que apresenta o menor Gradiente de Câmbio. O processo se encerra quando é atingida a cota de cabeceira desejada. São calculados os custos com materiais da rede otimizada e feita a análise dos mesmos, através da comparação com os custos da rede convencional

This dissertation presents a methodology to the optimization of a predial system of cold water distribution. Its about a study of a case applied to the Tropical Buzios Residential Condominium, located in the Búzios Beach, Nísia Floresta city, the east coast of the Rio Grande do Norte state, twenty kilometers far from Natal. The design of cold water distribution networks according to Norm NBR 5626 of the ABNT - Brazilian Association of Techniques Norms, does not guarantee that the joined solution is the optimal solution of less cost. Its necessary the use of an optimization methodology, that supplies us, between all the possible solutions, the minimum cost solution. In the optimization process of the predial system of water distribution of the Tropical Búzios Condominium, is used Method Granados, that is an iterative algorithm of optimization, based on the Dynamic Programming, that supplies the minimum costs network, in function of the piezometric quota of the reservoir. For the application of this Method in ramifies…

Advisors/Committee Members: Ada Cristina Scudelari, João Abner Guimarães Júnior, Marco Aurélio Holanda de Castro, Manoel Lucas Filho.

Subjects/Keywords: ENGENHARIA SANITARIA; Sistema de distribuição predial; Dimensionamento de redes; Otimização; Método Granados; Predial system of water distribution; Design of networks; Optimization; Granados Method

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Júnior, M. B. (2006). Otimização de um sistema de distribuição predial de água fria: estudo de caso. (Thesis). Universidade Federal do Rio Grande do Norte. Retrieved from http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1181 ; http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1182

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Júnior, Manoel Barrêto. “Otimização de um sistema de distribuição predial de água fria: estudo de caso.” 2006. Thesis, Universidade Federal do Rio Grande do Norte. Accessed April 22, 2021. http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1181 ; http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1182.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Júnior, Manoel Barrêto. “Otimização de um sistema de distribuição predial de água fria: estudo de caso.” 2006. Web. 22 Apr 2021.

Vancouver:

Júnior MB. Otimização de um sistema de distribuição predial de água fria: estudo de caso. [Internet] [Thesis]. Universidade Federal do Rio Grande do Norte; 2006. [cited 2021 Apr 22]. Available from: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1181 ; http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1182.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Júnior MB. Otimização de um sistema de distribuição predial de água fria: estudo de caso. [Thesis]. Universidade Federal do Rio Grande do Norte; 2006. Available from: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1181 ; http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=1182

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations