subject:(flow distribution)

University of Miami

1. Higier, Andrew. An In-Situ and Ex-Situ Investigation of Current Density Variations in a Proton Exchange Membrane Fuel Cell.

Degree: PhD, Mechanical Engineering (Engineering), 2010, University of Miami

URL: https://scholarlyrepository.miami.edu/oa_dissertations/373

► In polymer electrolyte membrane (PEM) fuel cells one of the most important components is the flow field. The flow field distributes reactant gasses to… (more)

▼ In polymer electrolyte membrane (PEM) fuel cells one of the most important components is the flow field. The flow field distributes reactant gasses to the active area and also delivers electrons from the outer circuit so that the electrochemical reaction may be completed. Optimizing flow field design is extremely important in order to increase the overall power density of the fuel cell. It is particularly important to understand the ways in which the different portions of the flow field, namely the land and channel sections, interact with the gas diffusion layer (GDL), catalyst layer and membrane; this study focuses on those interactions. The most common type of flow field design currently used in PEM fuel cells is the serpentine flow field. It is used for its simplicity of design, its effectiveness in distributing reactants and its water removal capabilities. The knowledge about where current density is higher, under the land or the channel, is critical for flow field design and optimization. Yet, no direct measurement data are available for serpentine flow fields. In this study a fuel cell with a single channel serpentine flow field is used to separately measure the current density under the land and channel, which is either catalyzed or insulated on the cathode. In this manner, a systematic study is conducted under a wide variety of conditions and a series of comparisons are made between land and channel current density. Results show that under most operating conditions, current density is higher under the land than that under the channel. However, at low voltage, a rapid drop off in current density occurs under the land due to concentration losses. The mechanisms for the direct measurement results and general guidelines for serpentine flow field design and optimizations are provided. In addition the same technique is utilized to separately measure current density under the land and channel on a variety of serpentine flow field geometries. Each flow field is tested under a wide variety of operating conditions thereby providing guidance for the optimum design geometry. Experimental results show that generally flow fields with both thinner lands and thinner channels provide better overall performance. However, the optimal flow field designs are highly dependent on fuel cell operating parameters. Finally, it is critical not only to know where the current density is greater, under the land or under the channel, but to understand the fundamental mechanisms driving these differences. Resistance was measured, ex-situ, between the GDE and flow plate under the land of the flow field and under the channel separately. The contact resistance between the gas diffusion electrode (GDE) and the graphite flow plate were measured using an ex-situ technique. The resistance was measured under different land and channel widths. Cyclic Voltammetry tests were also conducted in order to determine if there is any different in electrochemically active area(ECA) under the land and under the channel and what the cause of this difference… Advisors/Committee Members: Hongtan Liu, Xiangyang Zhou, Roger M. Leblanc, Singiresu S. Rao.

Subjects/Keywords: Fuel Cell; Pem; Flow Field; Current Distribution

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

APA (6^th Edition):

Higier, A. (2010). An In-Situ and Ex-Situ Investigation of Current Density Variations in a Proton Exchange Membrane Fuel Cell. (Doctoral Dissertation). University of Miami. Retrieved from https://scholarlyrepository.miami.edu/oa_dissertations/373

Chicago Manual of Style (16^th Edition):

Higier, Andrew. “An In-Situ and Ex-Situ Investigation of Current Density Variations in a Proton Exchange Membrane Fuel Cell.” 2010. Doctoral Dissertation, University of Miami. Accessed March 07, 2021. https://scholarlyrepository.miami.edu/oa_dissertations/373.

MLA Handbook (7^th Edition):

Higier, Andrew. “An In-Situ and Ex-Situ Investigation of Current Density Variations in a Proton Exchange Membrane Fuel Cell.” 2010. Web. 07 Mar 2021.

Vancouver:

Higier A. An In-Situ and Ex-Situ Investigation of Current Density Variations in a Proton Exchange Membrane Fuel Cell. [Internet] [Doctoral dissertation]. University of Miami; 2010. [cited 2021 Mar 07]. Available from: https://scholarlyrepository.miami.edu/oa_dissertations/373.

Council of Science Editors:

Higier A. An In-Situ and Ex-Situ Investigation of Current Density Variations in a Proton Exchange Membrane Fuel Cell. [Doctoral Dissertation]. University of Miami; 2010. Available from: https://scholarlyrepository.miami.edu/oa_dissertations/373

Karlstad University

2. Nyberg, Jesper. Flow Distribution in Brazed Plate Heat Exchangers : A Parameter Study in COMSOL.

Degree: Engineering and Chemical Sciences, 2016, Karlstad University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-43533

► Lubricants and liquid cooling are used in many industrial applications to ensure reliability and longevity of machinery. Oil cooling of both electrical and mechanical… (more)

▼ Lubricants and liquid cooling are used in many industrial applications to ensure reliability and longevity of machinery. Oil cooling of both electrical and mechanical applications is of interest since oil is better suited for electrical applications than water and already available in the system as a lubricant. Brazed plate heat exchangers (BPHEs) have many advantages compared to other heat exchanger types commonly used in oil cooling applications. Flow maldistribution inside BPHEs can arise with highly viscous fluids like oil. Since flow is hard to measure when plate heat exchangers are brazed together, Computational Fluid Dynamics (CFD) can be used instead. This study investigates parameters that could affect flow distribution inside BPHEs with the CFD-tool COMSOL Multiphysics. The study is made on three different geometries at different detail levels. The purpose of the study is to expand the knowledge about fluid behavior in BPHEs and how it affects efficiency. It was proved from the Bernoulli equation that flow velocity, gravity and Reynolds number were some parameters that could affect flow distribution inside BPHEs. Two simplified models were built for evaluation of viscosity, gravity and Reynolds number. A more detailed model was provided by SWEP representing the fluid domain of a full-size distribution zone model. Model validation and mesh independence study were made with expressions due to the lack of experimental data. Investigations of viscosity, gravity and Reynolds number were made through isolation and alteration of the respective parameter. The validation and mesh independence study proved the models trustworthy and detailed enough to capture the physical behavior. Small deviations from expected validation results can be explained with the assumptions and simplifications made in the process. Results show that flow maldistribution increases with viscosity differences between channels. Viscosity maldistribution is greater for oil than for water. It is important to consider how the fluid viscosity changes with temperature under the respective working conditions. Gravity has no effect on flow distribution as long as it acts along or opposite the main flow direction. As plate heat exchangers are generally placed vertically, gravity will not affect flow distribution. Gravity has a significant effect on flow distribution if plate packages are places horizontally. High Reynolds numbers have a positive effect on flow distribution and reduce the difference between highest and lowest velocities across the outlet. Very low flow velocities should therefore be avoided since it increases flow maldistribution.

Subjects/Keywords: Plate Heat Exchanger; Flow Distribution; CFD

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APA (6^th Edition):

Nyberg, J. (2016). Flow Distribution in Brazed Plate Heat Exchangers : A Parameter Study in COMSOL. (Thesis). Karlstad University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-43533

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):

Nyberg, Jesper. “Flow Distribution in Brazed Plate Heat Exchangers : A Parameter Study in COMSOL.” 2016. Thesis, Karlstad University. Accessed March 07, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-43533.

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

MLA Handbook (7^th Edition):

Nyberg, Jesper. “Flow Distribution in Brazed Plate Heat Exchangers : A Parameter Study in COMSOL.” 2016. Web. 07 Mar 2021.

Vancouver:

Nyberg J. Flow Distribution in Brazed Plate Heat Exchangers : A Parameter Study in COMSOL. [Internet] [Thesis]. Karlstad University; 2016. [cited 2021 Mar 07]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-43533.

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

Council of Science Editors:

Nyberg J. Flow Distribution in Brazed Plate Heat Exchangers : A Parameter Study in COMSOL. [Thesis]. Karlstad University; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-43533

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

Delft University of Technology

3. Ryan Adilardi Prakoso, Ryan (author). Power Flow Control Converter for Meshed LVDC.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:c1ce1f4c-502e-4fc8-8c30-5e2da52671f0

►

Meshed LVDC distribution grid is considered to be more efficient and reliable than AC distribution network. This applies in particular when there is a significant… (more)

Subjects/Keywords: power flow control; power flow converter; meshed LVDC; DC distribution grid

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APA (6^th Edition):

Ryan Adilardi Prakoso, R. (. (2017). Power Flow Control Converter for Meshed LVDC. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:c1ce1f4c-502e-4fc8-8c30-5e2da52671f0

Chicago Manual of Style (16^th Edition):

Ryan Adilardi Prakoso, Ryan (author). “Power Flow Control Converter for Meshed LVDC.” 2017. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:c1ce1f4c-502e-4fc8-8c30-5e2da52671f0.

MLA Handbook (7^th Edition):

Ryan Adilardi Prakoso, Ryan (author). “Power Flow Control Converter for Meshed LVDC.” 2017. Web. 07 Mar 2021.

Vancouver:

Ryan Adilardi Prakoso R(. Power Flow Control Converter for Meshed LVDC. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:c1ce1f4c-502e-4fc8-8c30-5e2da52671f0.

Council of Science Editors:

Ryan Adilardi Prakoso R(. Power Flow Control Converter for Meshed LVDC. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:c1ce1f4c-502e-4fc8-8c30-5e2da52671f0

University of Melbourne

4. Sourghali, Vahid. The hydraulic interaction between flood flows on urban road intersections.

Degree: 2012, University of Melbourne

URL: http://hdl.handle.net/11343/37828

► Since many cities and towns are sited on floodplains near rivers, floods are commonplace in Australia. Floods are Australia’s most costly disaster type. In this… (more)

▼ Since many cities and towns are sited on floodplains near rivers, floods are commonplace in Australia. Floods are Australia’s most costly disaster type. In this research, the hydraulic structure of the flood flow on a four-branch urban road intersection with two adjacent input streets and two output streets is investigated theoretically. The formation of different flow patterns is studied. Three flow patterns have been explored experimentally and introduced when supercritical flow approaching the intersection. Nania et al (2004) and Mignot et al (2008) defined those flow patterns based on the number and location of hydraulic jumps. The introduced flow patterns are investigated here theoretically. Two new flow patterns are discussed and introduced in this research. Flow Pattern Type 1, when the flows approaching the junction in the input streets are in subcritical condition and return to subcritical in output streets downstream of the junction. Flow Pattern Type I Subregime 1, when the flows approaching the junction in the input streets are in supercritical condition and return to supercritical in output streets downstream of the junction. The deflection of supercritical flow is investigated graphically. Nomographs are generated for the case that two oblique hydraulic jumps form in the junction, which can be used to predict the characteristics of flow in and downstream of the junction. For example, the jumps angles can be predicted from the known parameters of incoming flows by applying the angle model formulas. The flow distribution to the downstream streets or channels are investigated and discussed. A model is introduced for prediction of flow distribution to the downstream channels, when two incoming flows are supercritical. This model consists of a calculation for the angles of the hydraulic jumps and a calculation for the flow distribution, which have to be utilised concurrently to be able to determine the flow rates in the output channels or streets.

Subjects/Keywords: flow patterns; hydraulic jump; urban road intersections; flow distribution

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

APA (6^th Edition):

Sourghali, V. (2012). The hydraulic interaction between flood flows on urban road intersections. (Masters Thesis). University of Melbourne. Retrieved from http://hdl.handle.net/11343/37828

Chicago Manual of Style (16^th Edition):

Sourghali, Vahid. “The hydraulic interaction between flood flows on urban road intersections.” 2012. Masters Thesis, University of Melbourne. Accessed March 07, 2021. http://hdl.handle.net/11343/37828.

MLA Handbook (7^th Edition):

Sourghali, Vahid. “The hydraulic interaction between flood flows on urban road intersections.” 2012. Web. 07 Mar 2021.

Vancouver:

Sourghali V. The hydraulic interaction between flood flows on urban road intersections. [Internet] [Masters thesis]. University of Melbourne; 2012. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11343/37828.

Council of Science Editors:

Sourghali V. The hydraulic interaction between flood flows on urban road intersections. [Masters Thesis]. University of Melbourne; 2012. Available from: http://hdl.handle.net/11343/37828

University of Tennessee – Knoxville

5. Rooks, Cody. A Robust Hierarchical Dispatch Scheme for Active Distribution Networks Considering Home Thermal Flexibility.

Degree: MS, Electrical Engineering, 2019, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_gradthes/5577

► Distribution networks are changing from passive absorbers of electric energy to active distribution networks (ADN) capable of operating and participating in electricity markets. In the… (more)

Subjects/Keywords: Active distribution network; distribution optimal power flow; model predictive control; demand response

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

APA (6^th Edition):

Rooks, C. (2019). A Robust Hierarchical Dispatch Scheme for Active Distribution Networks Considering Home Thermal Flexibility. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/5577

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):

Rooks, Cody. “A Robust Hierarchical Dispatch Scheme for Active Distribution Networks Considering Home Thermal Flexibility.” 2019. Thesis, University of Tennessee – Knoxville. Accessed March 07, 2021. https://trace.tennessee.edu/utk_gradthes/5577.

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

MLA Handbook (7^th Edition):

Rooks, Cody. “A Robust Hierarchical Dispatch Scheme for Active Distribution Networks Considering Home Thermal Flexibility.” 2019. Web. 07 Mar 2021.

Vancouver:

Rooks C. A Robust Hierarchical Dispatch Scheme for Active Distribution Networks Considering Home Thermal Flexibility. [Internet] [Thesis]. University of Tennessee – Knoxville; 2019. [cited 2021 Mar 07]. Available from: https://trace.tennessee.edu/utk_gradthes/5577.

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

Council of Science Editors:

Rooks C. A Robust Hierarchical Dispatch Scheme for Active Distribution Networks Considering Home Thermal Flexibility. [Thesis]. University of Tennessee – Knoxville; 2019. Available from: https://trace.tennessee.edu/utk_gradthes/5577

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

Freie Universität Berlin

6. Irving, Katherine Sarah. Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates.

Degree: 2020, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-27010

► Artverbreitungsmodelle (eng.: species distribution models; SDMs) werden zunehmend für Flussökosysteme angewandt um groß-skalige Analysen zu ergänzen. In der aktuellen ökologischen Theorie wird das Abflussverhalten als… (more)

▼ Artverbreitungsmodelle (eng.: species distribution models; SDMs) werden zunehmend für Flussökosysteme angewandt um groß-skalige Analysen zu ergänzen. In der aktuellen ökologischen Theorie wird das Abflussverhalten als einer der wesentlichen Einflussfaktoren für das Vorkommen und die Verbreitung von Flusslebewesen beschrieben. Es gibt jedoch nur wenige Studien zur Modellierung der Verbreitung von Fließgewässerarten, die Daten berücksichtigen, die das Abflussverhalten detailliert beschreiben. Anstelle dessen, werden häufig Klimadaten, oder aber indirekte Indikatoren genutzt. Derartige indirekte hydrologische Indikatoren haben zwar einen großen Einfluss auf die Verbreitung von Fließgewässerarten, dennoch können sie die wesentlichen Faktoren des Abflussverhaltens nur teilweise abbilden. Dieses Vorgehen ist teilweise auf die Verfügbarkeit von geeigneten hydrologischen Daten für SDMs zurückzuführen, da diese meist in ihrer räumlichen und zeitlichen Ausdehnung und Auflösung limitiert sind. Eine weitere Herausforderung in der Anwendung von SDMs ist die Auswahl relevanter Umwelt-Prädiktoren bei der Modellierung großer Artgemeinschaften, da diese Entscheidung zumeist für die gesamte Artgemeinschaft vorgenommen wird und entsprechend nicht artspezifisch ist. Dies führt dazu, dass die Prädiktoren für einige Arten ungeeignet sind, was wiederum die Modellgüte und die vorhergesagten Verbreitungsmuster beeinflusst. Das Hauptziel der vorliegenden methodischen Arbeit ist es, die Vorhersagekapazitäten von SDMs für benthische Makroinvertebraten durch Einbindung von hydrologischen Prädiktoren, die das Abflussverhalten beschreiben, zu verbessern. Die Arbeit besteht aus drei Teilen. Im ersten Teil habe ich einen zeitlich und räumlich (1 km2) hoch aufgelösten Datensatz, der den Abfluss und eine Reihe weiterer hydrologischer Einflussgrößen beinhaltet, für Deutschland entwickelt. Im zweiten Teil habe ich eine Methode zur Ermittlung der optimalen Prädiktoren für den Einsatz in SDMs entwickelt und den Effekt der Auswahl der Prädiktoren auf SDMs untersucht. Im dritten Teil geht es um die Rolle der Hydrologie in SDMs, die ich über den Einfluss von klimatischen und hydrologischen Datensätzen untersucht habe. Auf der Grundlage von deutschlandweit gemessenen Abflussdaten und modellierten Niederschlagsdaten, habe ich mittels gewichteter linearer Regression deutschlandweite tägliche Abflussdaten (m3 s-1) für einen Zeitraum von 64 Jahren (1950 bis 2013) erstellt. Im Anschluss wurden diese täglichen Abflussdaten verwendet, um 53 Indikatoren der hydrologischen Veränderung (IHA) zu berechnen, die die Stärke, Frequenz, Dauer, und Größe der Veränderung von Hoch- Niedrig-und Mittelwasser Ereignissen beschreiben. Die Abflussdaten wurden zeitlich und räumlich validiert, wodurch ich erfolgreich zeigen konnte, dass die modellierten IHA für SDMs genutzt werden können. Sowohl die IHA, als auch die modellierten Abflussdaten sind öffentlich verfügbar und können so für SDMs genutzt werden. Unter Anwendung der modellierten IHA sowie der Klima-, Landnutzungs-, und… Advisors/Committee Members: female (gender), Jähnig, Sonja C. (firstReferee), Tockner, Klement (furtherReferee).

Subjects/Keywords: Species distribution models; benthic macro invertebrates; flow regime; rivers; predictive modelling; stream flow; ddc:577

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

APA (6^th Edition):

Irving, K. S. (2020). Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-27010

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):

Irving, Katherine Sarah. “Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates.” 2020. Thesis, Freie Universität Berlin. Accessed March 07, 2021. http://dx.doi.org/10.17169/refubium-27010.

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

MLA Handbook (7^th Edition):

Irving, Katherine Sarah. “Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates.” 2020. Web. 07 Mar 2021.

Vancouver:

Irving KS. Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates. [Internet] [Thesis]. Freie Universität Berlin; 2020. [cited 2021 Mar 07]. Available from: http://dx.doi.org/10.17169/refubium-27010.

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

Council of Science Editors:

Irving KS. Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates. [Thesis]. Freie Universität Berlin; 2020. Available from: http://dx.doi.org/10.17169/refubium-27010

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

University of Arizona

7. Kumar, Nikhil. Design Optimization of Heat Transfer and Fluidic Devices by Using Additive Manufacturing .

Degree: 2016, University of Arizona

URL: http://hdl.handle.net/10150/621125

► After the development of additive manufacturing technology in the 1980s, it has found use in many applications like aerospace, automotive, marine, machinery, consumer and electronic… (more)

Subjects/Keywords: Design Optimization; Pipe with Internal Flow; Uniform Flow Distribution Device; Mechanical Engineering; Additive Manufacturing

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

APA (6^th Edition):

Kumar, N. (2016). Design Optimization of Heat Transfer and Fluidic Devices by Using Additive Manufacturing . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/621125

Chicago Manual of Style (16^th Edition):

Kumar, Nikhil. “Design Optimization of Heat Transfer and Fluidic Devices by Using Additive Manufacturing .” 2016. Masters Thesis, University of Arizona. Accessed March 07, 2021. http://hdl.handle.net/10150/621125.

MLA Handbook (7^th Edition):

Kumar, Nikhil. “Design Optimization of Heat Transfer and Fluidic Devices by Using Additive Manufacturing .” 2016. Web. 07 Mar 2021.

Vancouver:

Kumar N. Design Optimization of Heat Transfer and Fluidic Devices by Using Additive Manufacturing . [Internet] [Masters thesis]. University of Arizona; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10150/621125.

Council of Science Editors:

Kumar N. Design Optimization of Heat Transfer and Fluidic Devices by Using Additive Manufacturing . [Masters Thesis]. University of Arizona; 2016. Available from: http://hdl.handle.net/10150/621125

Utah State University

8. Hogge, Joshua Ryan. Achieving Uniform Flow Distribution in Compact Irrigation Splitter Boxes with High Flow Rates.

Degree: MS, Civil and Environmental Engineering, 2016, Utah State University

URL: https://digitalcommons.usu.edu/etd/4630

► In many irrigation systems and networks, there are multiple water users and shareholders who take their water from different locations along a single canal… (more)

Subjects/Keywords: Uniform Flow Distribution; Compact Irrigation; Splitter Boxes; High Flow Rates; Civil and Environmental Engineering

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

APA (6^th Edition):

Hogge, J. R. (2016). Achieving Uniform Flow Distribution in Compact Irrigation Splitter Boxes with High Flow Rates. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/4630

Chicago Manual of Style (16^th Edition):

Hogge, Joshua Ryan. “Achieving Uniform Flow Distribution in Compact Irrigation Splitter Boxes with High Flow Rates.” 2016. Masters Thesis, Utah State University. Accessed March 07, 2021. https://digitalcommons.usu.edu/etd/4630.

MLA Handbook (7^th Edition):

Hogge, Joshua Ryan. “Achieving Uniform Flow Distribution in Compact Irrigation Splitter Boxes with High Flow Rates.” 2016. Web. 07 Mar 2021.

Vancouver:

Hogge JR. Achieving Uniform Flow Distribution in Compact Irrigation Splitter Boxes with High Flow Rates. [Internet] [Masters thesis]. Utah State University; 2016. [cited 2021 Mar 07]. Available from: https://digitalcommons.usu.edu/etd/4630.

Council of Science Editors:

Hogge JR. Achieving Uniform Flow Distribution in Compact Irrigation Splitter Boxes with High Flow Rates. [Masters Thesis]. Utah State University; 2016. Available from: https://digitalcommons.usu.edu/etd/4630

NSYSU

9. Sabelo Mahlalela , John. Optimum Placement and Sizing of Harmonic Filters in Distribution Network.

Degree: Master, IMEPE, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630115-124017

► Due to the gradual increase of power conditioning devices integrated in the active distribution system, the future smart grid is expected to have more harmonic… (more)

Subjects/Keywords: Filters; HPB Table; Harmonics; Distribution network; Harmonic Power flow

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

APA (6^th Edition):

Sabelo Mahlalela , J. (2015). Optimum Placement and Sizing of Harmonic Filters in Distribution Network. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630115-124017

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):

Sabelo Mahlalela , John. “Optimum Placement and Sizing of Harmonic Filters in Distribution Network.” 2015. Thesis, NSYSU. Accessed March 07, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630115-124017.

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

MLA Handbook (7^th Edition):

Sabelo Mahlalela , John. “Optimum Placement and Sizing of Harmonic Filters in Distribution Network.” 2015. Web. 07 Mar 2021.

Vancouver:

Sabelo Mahlalela J. Optimum Placement and Sizing of Harmonic Filters in Distribution Network. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Mar 07]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630115-124017.

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

Council of Science Editors:

Sabelo Mahlalela J. Optimum Placement and Sizing of Harmonic Filters in Distribution Network. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0630115-124017

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

10. Bock, Raoul Dimitri. The performance of an axial flow fan in a small scale A-frame test facility.

Degree: MEng, Mechanical and Mechatronic Engineering, 2017, Stellenbosch University

URL: http://hdl.handle.net/10019.1/102757

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ENGLISH ABSTRACT: This thesis investigated the performance of the B2 axial flow fan at different operating points and at two fan speeds in an A-frame… (more)

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ENGLISH ABSTRACT: This thesis investigated the performance of the B2 axial flow fan at different operating points and at two fan speeds in an A-frame configuration. For this purpose, a test facility consisting of a forced draft fan configuration discharging into an A-frame plenum chamber (referred to as a modular, scaled air-cooled condenser or MSACC) was designed and manufactured. Using the fan performance curves and experimental results for the heat exchanger model, the operating range of the test facility was determined to be within the peak efficiency range of the B2-fan as tested in the BS 848 test facility. The results from the experiments show that there is correlation between the static pressure, power consumption and static efficiency of the B2-fan in the MSACC and BS848 test facilities. The inlet velocity and outlet velocities were measured using anemometers. With calibration data obtained using a built forced draft wind tunnel, the outlet volumetric flow rate and static pressure distribution across the MSACC’s A-frame. The results also show that there is a maldistribution in the air exit velocity due to the presence of the fan’s outlet swirl. The MSACC provides a unique test bench for testing the performance of future air-cooled condenser and axial flow fan designs. Furthermore, it also provides a platform to study installation and environmental factors that influence the aerodynamic and structural performance of an air-cooled condenser fan.

AFRIKAANSE OPSOMMING: Hierdie navorsing, ondersoek die werkverrigting van die B2 aksiale vloei waaier by verskillende bedryfspunte en twee waaier spoed punte in 'n A-raam opstelling. Vir hierdie doel is 'n toets fasiliteit ontwerp en vervaardig bestaande uit 'n geforseerde deurvloei waaier opstelling in 'n A-raam konfigurasie (ook genoem ‘n modulêr, afgeskaalde lugverkoelde kondensor of MSACC). Deur gebruik te maak van die waaier se werksverrigting krommes en eksperimentele resultate vir die hitteruiler model, is die bedryfsomvang van die toetsfasiliteit bepaal om te werk in beperking van die maksimum benuttigsgraad van die B2-waaier, soos getoets in die BS 848 tipe-A toetsfasiliteit. Die resultate van die eksperimente toon aan dat daar ‘n korrelasie is tussen die statiese druk, kragverbruik en benuttigsgraad van die B-waaier in die MSACC, in vergelyking met die waaierkrommes verkry vanaf 'n standaard BS 848 tipe-A waaier toetsfasiliteit. Die inlaat en uitlaat snelhede was gemeet met behulp van anemometers. Die kalibrasie data was verkry met behulp van 'n geboude druk wind tonnel, om die uitlaat volumetriese stroomsnelheid en statiese druk verspreiding oor die MSACC se A-raam te meet. Die resultate toon ook dat daar 'n wanverdeling is in die snelheid van die lug wat uitgaan, te wyte aan die teenwoordigheid van die waaier se rotasionele uitlaat snelheidskomponent. Die MSACC bied 'n unieke fasiliteit vir die toets van werksverrigtinge van aksiale vloei waaiers en toekomstige lugverkoelde kondensor ontwerpe. Verder bied dit ook 'n platform om omgewingsfaktore wat 'n…

Advisors/Committee Members: Van der Spuy, Sybrand J., Els, Danie N. J., Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering..

Subjects/Keywords: Axial flow – Performance; Static pressure distribution; B2 (Steam locomotive); UCTD

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APA (6^th Edition):

Bock, R. D. (2017). The performance of an axial flow fan in a small scale A-frame test facility. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/102757

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):

Bock, Raoul Dimitri. “The performance of an axial flow fan in a small scale A-frame test facility.” 2017. Thesis, Stellenbosch University. Accessed March 07, 2021. http://hdl.handle.net/10019.1/102757.

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

MLA Handbook (7^th Edition):

Bock, Raoul Dimitri. “The performance of an axial flow fan in a small scale A-frame test facility.” 2017. Web. 07 Mar 2021.

Vancouver:

Bock RD. The performance of an axial flow fan in a small scale A-frame test facility. [Internet] [Thesis]. Stellenbosch University; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10019.1/102757.

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

Council of Science Editors:

Bock RD. The performance of an axial flow fan in a small scale A-frame test facility. [Thesis]. Stellenbosch University; 2017. Available from: http://hdl.handle.net/10019.1/102757

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

Texas A&M University

11. Chou, Hung-Ming. Investigation of Voltage Stability in Three-Phase Unbalanced Distribution Systems with DGs.

Degree: PhD, Electrical Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/157109

► Smart grids draw lots of attention and interests and they are fundamentally changing traditional power grids. One of the key aspects of smart grid is… (more)

▼ Smart grids draw lots of attention and interests and they are fundamentally changing traditional power grids. One of the key aspects of smart grid is that more distributed generators (DGs) are connected in distribution systems. Distribution systems have changed from passive to active. Stability problems become important issues, one of which is voltage stability problems. To analyze voltage stability problems, many methods are proposed for transmission systems. However, because distribution systems are very different from transmission system, the methods for transmission systems cannot be directly applied to distribution systems. Therefore, effective methods of analyzing voltage stability problems for distribution systems are needed. The main focus of this dissertation is on three-phase unbalanced distribution systems with DGs. Firstly, improvements were made to an existing three-phase continuation power flow (CPF) method so that the maximum loading factor of distribution systems can be found accurately. Various distribution system components and DGs in PQ mode and PV mode with reactive power were modeled. Comparisons with Matpower software were made to validate the correctness of the implemented three-phase CPF program. Secondly, to provide more detailed voltage stability analysis and determine the weak buses of distribution systems, a new voltage stability analysis method, the CPF scan method, was proposed. The weak buses found by this method are the buses that have higher impact on the maximum loadability or the maximum total real load power that the system can support. Extensive case studies were performed and the impact of different distribution components were investigated. Lastly, to determine whether a distribution will experience voltage stability problems and to determine the weak buses, a measurement-based three-phase voltage stability index was proposed. This voltage stability index provides not only a system-wide index but also an individual index for each bus/phase. These proposed methods were applied to 8-bus system and a modified IEEE 13-node test feeder with DG to study the performance of the methods and investigate the impact on weak buses of different factors in distribution systems. The case studies showed that the proposed two methods, CPF scan and VSI, can successfully identify the impact of certain distribution system components. For more complicated components, such as untransposed lines and DG in PV mode, more research is needed. Also the CPF scan results shows good applications to distribution system operation and planning. The applications of the new proposed methods are not limited to identifying the weak buses. These methods have a great potential to be extended to voltage stability preventive and corrective control. Advisors/Committee Members: Butler-Purry, Karen L. (advisor), Huang, Garng M. (committee member), Bhattacharyya, Shankar P. (committee member), Butenko, Sergiy (committee member).

Subjects/Keywords: Distribution System; DGs; Voltage Stability; Continuation Power Flow; Smart Grid

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

APA (6^th Edition):

Chou, H. (2016). Investigation of Voltage Stability in Three-Phase Unbalanced Distribution Systems with DGs. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/157109

Chicago Manual of Style (16^th Edition):

Chou, Hung-Ming. “Investigation of Voltage Stability in Three-Phase Unbalanced Distribution Systems with DGs.” 2016. Doctoral Dissertation, Texas A&M University. Accessed March 07, 2021. http://hdl.handle.net/1969.1/157109.

MLA Handbook (7^th Edition):

Chou, Hung-Ming. “Investigation of Voltage Stability in Three-Phase Unbalanced Distribution Systems with DGs.” 2016. Web. 07 Mar 2021.

Vancouver:

Chou H. Investigation of Voltage Stability in Three-Phase Unbalanced Distribution Systems with DGs. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/1969.1/157109.

Council of Science Editors:

Chou H. Investigation of Voltage Stability in Three-Phase Unbalanced Distribution Systems with DGs. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/157109

Penn State University

12. Pruvot, Antoine. Optimization of Natural Gas Distribution in Pipeline Networks .

Degree: 2015, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/26348

► In natural gas pipeline transportation systems, network operators play a crucial role. Through compression power and pipeline geometry, they master the physics of the systems,… (more)

▼ In natural gas pipeline transportation systems, network operators play a crucial role. Through compression power and pipeline geometry, they master the physics of the systems, allowing them to control the flow of gas between two points. Their decisions impact the entire production chain, from the suppliers to the consumers. Consequently, the management of pipeline systems requires an in-depth analysis of the influence of each decision. Each pressure change in the system may seriously impact the flow of natural gas, deeply modifying the revenue of the entire production and how it is divided between the different actors of the market. It is fundamental to understand how to master the system in order to control the money generated. From an economic point of view, natural gas pipeline production, transportation and sale creates wealth divided between the different actors in the sector: the profit of the producer, the consumer welfare and a combination of both for the network operator. This social wealth, should be maximized in order to generate the most benefit from the network for society. In order to do so, it is necessary to understand how much gas is flowing through each pipeline. If pressure values are fixed on an arbitrary basis, the dispatch of natural gas in the network will not be optimized. The loss of social wealth generated can be considerable given the important volumes transported through pipeline those days. In the market of natural gas transportation, if the pressure at the nodes is wrongly chosen, it could be disastrous for a company. How could any producing/transporting company avoid wasting this significant amount of money? What are the solutions available for the natural gas pipeline engineers to dispatch natural gas in order to maximize the social wealth generated? This issue can be stated in the corresponding two situations: • For the construction of a new pipeline network, how should the geometry of the different pipes be chosen in order to transport natural gas in an optimal way? • For an existing pipeline network, how should the pressure drops be chosen to maximize the social wealth of the producing/transporting company? The goal of this study is to provide network operators with the parameters to answer those situations. By fixing the pressure values at the nodes of the system, it is possible to maximize the economic value generated by the natural gas transportation and sales. Additionally, running the simulation on different natural gas network configurations = inform the company on how to choose the ideal geometry factors of each branch of pipeline. Midthun et al. (2009) suggested two different methods to address this problem. The first one, the Independent Static Flow (ISF) method is a straightforward way to find a solution. Neglecting the physics of natural gas, this method assumes that every pipe of the system is running at maximum capacity. The method is very easy to use and implement. Nevertheless, the solution provided is unrealistic: as the physics of natural gas is not respected, it… Advisors/Committee Members: Dr Luis Ayala, Thesis Advisor/Co-Advisor, Chiara Lo Prete, Thesis Advisor/Co-Advisor, Andrew Nathan Kleit, Thesis Advisor/Co-Advisor.

Subjects/Keywords: pipeline; pipe; economic surplus; natural gas; weymouth; flow; optimization; distribution; network

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APA (6^th Edition):

Pruvot, A. (2015). Optimization of Natural Gas Distribution in Pipeline Networks . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/26348

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):

Pruvot, Antoine. “Optimization of Natural Gas Distribution in Pipeline Networks .” 2015. Thesis, Penn State University. Accessed March 07, 2021. https://submit-etda.libraries.psu.edu/catalog/26348.

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

MLA Handbook (7^th Edition):

Pruvot, Antoine. “Optimization of Natural Gas Distribution in Pipeline Networks .” 2015. Web. 07 Mar 2021.

Vancouver:

Pruvot A. Optimization of Natural Gas Distribution in Pipeline Networks . [Internet] [Thesis]. Penn State University; 2015. [cited 2021 Mar 07]. Available from: https://submit-etda.libraries.psu.edu/catalog/26348.

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

Council of Science Editors:

Pruvot A. Optimization of Natural Gas Distribution in Pipeline Networks . [Thesis]. Penn State University; 2015. Available from: https://submit-etda.libraries.psu.edu/catalog/26348

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

University of Wollongong

13. Han, Yu. Experimental verification of flow divisibility in 3-D laboratory channels.

Degree: PhD, 2014, University of Wollongong

URL: 0905 CIVIL ENGINEERING ; https://ro.uow.edu.au/theses/4144

► The prediction of the structure of turbulent flow in a 3-D channel is very difficult, thus hydraulic engineers often divide the flow region into… (more)

▼ The prediction of the structure of turbulent flow in a 3-D channel is very difficult, thus hydraulic engineers often divide the flow region into sub-regions to simplify its calculation, and then a complex 3-D problem can be treated using a 1-D technique. This treatment has been found effective in estimating some real world hydraulic parameters, such as the boundary shear stresses. In practice, engineers generally separate the flow regions into three sub-regions associated with a channel bed and its side-walls. It is widely believed that the theory of flow partitioning is an effective mathematical tool to simplify the hydraulic calculation without any physical meaning, and the practice shows that such treatment can significantly enhance the accuracy for estimation of bedload transport, the bedform resistance, and the pollutant transport. Therefore, it is necessary to experimentally ascertain the existence of the division lines in a channel flow. This research attempts to address these research gaps with respect to turbulent structures and flow partitioning in flows and explain why the flow region is dividable. An intensive laboratory investigation was carried out. The major part of this study involved the development and use of a sophisticated instrumentation system based on a new 2-D Laser Doppler Anemometer (LDA) system by Dantec. Special attention has been paid to the time-averaged velocity, from which the location of division lines can be observed. The channel bed was specially designed to observe the variation of division lines corresponding to the bed’s curvature, and channel bed-form has been fabricated as the flat bed, convex bed and concave bed. The literature review shows that although the flow partitioning argument is intensive, no similar experiments have been conducted to verify the existence of division line in a channel flow, and none of the previous researchers have examined the relationship between the division lines and mean velocity profiles. The main novel contribution of this thesis is to examine the existence of division lines by analysing the mean velocity distribution in a flume with a flat or curved bed. Two new methods have been developed to detect whether division lines actually exist from experiments, one uses the condition of zero total shear stress and the other uses the log-law. The feasibility of these two methods developed for division lines have been discussed from author’s experimental data, as well as available data in literature. Throughout this research, it can be confirmed that the division lines indeed exist in a 3-D flow, and they can be determined from the mean velocity distribution in a flume for a flat or curved bed. Moreover, the experimental research verified those previously proposed mathematical methods, which can yield the most accurate division line locations. The experiments were classified into three channel shapes. Detailed measurements of instantaneous velocities were carried out for the three different channel shapes at various depths of…

Subjects/Keywords: flow division; turbulence; boundary sheer stress; velocity distribution

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

APA (6^th Edition):

Han, Y. (2014). Experimental verification of flow divisibility in 3-D laboratory channels. (Doctoral Dissertation). University of Wollongong. Retrieved from 0905 CIVIL ENGINEERING ; https://ro.uow.edu.au/theses/4144

Chicago Manual of Style (16^th Edition):

Han, Yu. “Experimental verification of flow divisibility in 3-D laboratory channels.” 2014. Doctoral Dissertation, University of Wollongong. Accessed March 07, 2021. 0905 CIVIL ENGINEERING ; https://ro.uow.edu.au/theses/4144.

MLA Handbook (7^th Edition):

Han, Yu. “Experimental verification of flow divisibility in 3-D laboratory channels.” 2014. Web. 07 Mar 2021.

Vancouver:

Han Y. Experimental verification of flow divisibility in 3-D laboratory channels. [Internet] [Doctoral dissertation]. University of Wollongong; 2014. [cited 2021 Mar 07]. Available from: 0905 CIVIL ENGINEERING ; https://ro.uow.edu.au/theses/4144.

Council of Science Editors:

Han Y. Experimental verification of flow divisibility in 3-D laboratory channels. [Doctoral Dissertation]. University of Wollongong; 2014. Available from: 0905 CIVIL ENGINEERING ; https://ro.uow.edu.au/theses/4144

University of Wollongong

14. Wanayalage, Chandrasiri Kumara. Load-deformation behaviour of rough rock fractures subjected to internal water flow.

Degree: PhD, 2014, University of Wollongong

URL: 090501 Civil Geotechnical Engineering, 010302 Numerical Solution of Differential and Integral Equations, 0403 GEOLOGY, 0404 GEOPHYSICS ; https://ro.uow.edu.au/theses/4136

► Underground rock strata are often fractured and their permeability is mainly governed by interconnected fracture networks. Flow through fractures must be studied in order… (more)

▼ Underground rock strata are often fractured and their permeability is mainly governed by interconnected fracture networks. Flow through fractures must be studied in order to design and operate underground activities such as tunnelling and mine operations, as well as groundwater and petroleum extraction. Flow through a fracture is primarily influenced by its aperture, and because fracture apertures can be distributed widely within a rockmass, they have closures as well as wide openings depending on the location and in-situ stress conditions. Past research studies have been carried out on defining the equivalent aperture to predict fracture flows from uni-directional flow models. However, in most civil engineering applications, plane strain conditions can be assumed (e.g. tunnels, rock slopes), and in such situations two-dimensional fracture models have been suggested for stationary fracture walls. Modelling flow through deformable fractures in plane stain, two-dimensional domain would provide profound insight into rock fracture hydraulics, and these models available now have been simulated using common numerical flow solvers. In this regard, a customised numerical solver to simulate fracture hydraulics would be an important addition to this research area. In contrast to available literature, in this PhD study, an equivalent twodimensional flow model was derived from the three-dimensional Navier-Stokes theory for deformable rock fractures. The proposed model contains pressure-velocity coupled equations, and a numerical solution is subsequently introduced by modifying the SIMPLE (Semi Implicit Method for Pressure Linked Equations) algorithm. The Writer’s own computer programme (Rock Fracture Flow Solver or RFFS) was developed to solve the proposed model using MATLAB computer language. Laboratory experiments were carried out for mated and dislocated fracture specimens using the high pressure triaxial apparatus (HPTPTA) designed and built in University of Wollongong. The fracture apertures were measured by replicating them and scanning the surfaces using a 3D laser scanner. Flows through the rock fractures were simulated using the Rock Fracture Flow Solver (RFFS), and the validity of the proposed model was verified for general underground fracture flow situations.

Subjects/Keywords: fracture permeability; fluid flow; aperture distribution; triaxial testing; finite volume method

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APA (6^th Edition):

Wanayalage, C. K. (2014). Load-deformation behaviour of rough rock fractures subjected to internal water flow. (Doctoral Dissertation). University of Wollongong. Retrieved from 090501 Civil Geotechnical Engineering, 010302 Numerical Solution of Differential and Integral Equations, 0403 GEOLOGY, 0404 GEOPHYSICS ; https://ro.uow.edu.au/theses/4136

Chicago Manual of Style (16^th Edition):

Wanayalage, Chandrasiri Kumara. “Load-deformation behaviour of rough rock fractures subjected to internal water flow.” 2014. Doctoral Dissertation, University of Wollongong. Accessed March 07, 2021. 090501 Civil Geotechnical Engineering, 010302 Numerical Solution of Differential and Integral Equations, 0403 GEOLOGY, 0404 GEOPHYSICS ; https://ro.uow.edu.au/theses/4136.

MLA Handbook (7^th Edition):

Wanayalage, Chandrasiri Kumara. “Load-deformation behaviour of rough rock fractures subjected to internal water flow.” 2014. Web. 07 Mar 2021.

Vancouver:

Wanayalage CK. Load-deformation behaviour of rough rock fractures subjected to internal water flow. [Internet] [Doctoral dissertation]. University of Wollongong; 2014. [cited 2021 Mar 07]. Available from: 090501 Civil Geotechnical Engineering, 010302 Numerical Solution of Differential and Integral Equations, 0403 GEOLOGY, 0404 GEOPHYSICS ; https://ro.uow.edu.au/theses/4136.

Council of Science Editors:

Wanayalage CK. Load-deformation behaviour of rough rock fractures subjected to internal water flow. [Doctoral Dissertation]. University of Wollongong; 2014. Available from: 090501 Civil Geotechnical Engineering, 010302 Numerical Solution of Differential and Integral Equations, 0403 GEOLOGY, 0404 GEOPHYSICS ; https://ro.uow.edu.au/theses/4136

Brigham Young University

15. Stevens, Kimberly Ann. Two-Phase Interactions on Superhydrophobic Surfaces.

Degree: PhD, 2018, Brigham Young University

URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8711&context=etd

► Superhydrophobic surfaces have gained attention as a potential mechanism for increasing condensation heat transfer rates. Various aspects related to condensation heat transfer are explored. Adiabatic,… (more)

▼ Superhydrophobic surfaces have gained attention as a potential mechanism for increasing condensation heat transfer rates. Various aspects related to condensation heat transfer are explored. Adiabatic, air-water mixtures are used to explore the influence of hydrophobicity on two-phase flows and the hydrodynamics which might be present in flow condensation environments. Pressure drop measurements in a rectangular channel with one superhydrophobic wall (cross-section approximately 0.37 X 10 mm) are obtained, revealing a reduction in the pressure drop for two-phase flow compared to a control scenario. The observed reduction is approximately 10% greater than the reduction that is observed for single-phase flow (relative to a classical channel). Carbon nanotubes have been used to create superhydrophobic coatings due to their ability to offer a relatively uniform nanostructure. However, as-grown carbon nanotubes often require the addition of a thin-film hydrophobic coating to render them superhydrophobic, and fine control of the overall nanostructure is difficult. This work demonstrates the utility of using carbon infiltration to layer amorphous carbon on multi-walled nanotubes to achieve superhydrophobic behavior with tunable geometry. The native surface can be rendered superhydrophobic with a vacuum pyrolysis treatment, with contact angles as high as 160 degrees and contact angle hysteresis less than 2-3 degrees. Drop-size distribution is an important aspect of heat transfer modeling that is difficult to measure for small drop sizes. The present work uses a numerical simulation of condensation to explore the influence of nucleation site distribution approach, nucleation site density, contact angle, maximum drop size, heat transfer modeling to individual drops, and minimum jumping size on the distribution function and overall heat transfer rate. The simulation incorporates the possibility of coalescence-induced jumping over a range of sizes. Results of the simulation are compared with previous theoretical models and the impact of the assumptions used in those models is explored. Results from the simulation suggest that when the contact angle is large, as on superhydrophobic surfaces, the heat transfer may not be as sensitive to the maximum drop-size as previously supposed. Furthermore, previous drop-size distribution models may under-predict the heat transfer rate at high contact angles. Condensate drop behavior (jumping, non-jumping, and flooding) and size distribution are shown to be dependent on the degree of subcooling and nanostructure size. Drop-size distributions for surfaces experiencing coalescence-induced jumping are obtained experimentally. Understanding the drop-size distribution in the departure region is important since drops in this size are expected to contribute significantly to the overall heat transfer rate.

Subjects/Keywords: superhydrophobic surfaces; condensation; two-phase flow; drop-size distribution; Engineering

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APA (6^th Edition):

Stevens, K. A. (2018). Two-Phase Interactions on Superhydrophobic Surfaces. (Doctoral Dissertation). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8711&context=etd

Chicago Manual of Style (16^th Edition):

Stevens, Kimberly Ann. “Two-Phase Interactions on Superhydrophobic Surfaces.” 2018. Doctoral Dissertation, Brigham Young University. Accessed March 07, 2021. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8711&context=etd.

MLA Handbook (7^th Edition):

Stevens, Kimberly Ann. “Two-Phase Interactions on Superhydrophobic Surfaces.” 2018. Web. 07 Mar 2021.

Vancouver:

Stevens KA. Two-Phase Interactions on Superhydrophobic Surfaces. [Internet] [Doctoral dissertation]. Brigham Young University; 2018. [cited 2021 Mar 07]. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8711&context=etd.

Council of Science Editors:

Stevens KA. Two-Phase Interactions on Superhydrophobic Surfaces. [Doctoral Dissertation]. Brigham Young University; 2018. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=8711&context=etd

Delft University of Technology

16. Aviles Cedeño, Jonathan (author). A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0d750fa1-b349-4459-8ba7-5f2a3bbf0c87

►

The calculation of power flow through electrical networks has been utilized commonly in transmission networks as the first calculation tool to assess their steady state… (more)

Subjects/Keywords: Unbalanced Power Flow Calculation; Distribution Network; Phase Domain Modelling

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APA (6^th Edition):

Aviles Cedeño, J. (. (2017). A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0d750fa1-b349-4459-8ba7-5f2a3bbf0c87

Chicago Manual of Style (16^th Edition):

Aviles Cedeño, Jonathan (author). “A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems.” 2017. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:0d750fa1-b349-4459-8ba7-5f2a3bbf0c87.

MLA Handbook (7^th Edition):

Aviles Cedeño, Jonathan (author). “A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems.” 2017. Web. 07 Mar 2021.

Vancouver:

Aviles Cedeño J(. A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:0d750fa1-b349-4459-8ba7-5f2a3bbf0c87.

Council of Science Editors:

Aviles Cedeño J(. A Three-Phase Unbalanced Load Flow Solver for Large-Scale Distribution Power Systems. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:0d750fa1-b349-4459-8ba7-5f2a3bbf0c87

Delft University of Technology

17. Karambelkar, Sahil (author). Distributed optimal power flow in a dc distribution system: Step towards smarter energy management.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f5360fdc-2418-460c-95cc-acfff86aca3a

► Rise in distributed energy resources has prompted a shift in the way electricity market operators function. Traditionally, centralized optimization techniques are used by such operators… (more)

Subjects/Keywords: DC distribution system; energy management; smart; Distributed optimal power flow

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APA (6^th Edition):

Karambelkar, S. (. (2017). Distributed optimal power flow in a dc distribution system: Step towards smarter energy management. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f5360fdc-2418-460c-95cc-acfff86aca3a

Chicago Manual of Style (16^th Edition):

Karambelkar, Sahil (author). “Distributed optimal power flow in a dc distribution system: Step towards smarter energy management.” 2017. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:f5360fdc-2418-460c-95cc-acfff86aca3a.

MLA Handbook (7^th Edition):

Karambelkar, Sahil (author). “Distributed optimal power flow in a dc distribution system: Step towards smarter energy management.” 2017. Web. 07 Mar 2021.

Vancouver:

Karambelkar S(. Distributed optimal power flow in a dc distribution system: Step towards smarter energy management. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:f5360fdc-2418-460c-95cc-acfff86aca3a.

Council of Science Editors:

Karambelkar S(. Distributed optimal power flow in a dc distribution system: Step towards smarter energy management. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:f5360fdc-2418-460c-95cc-acfff86aca3a

Delft University of Technology

18. Chaifouroosh Mamagany, Dario (author). Direct Current Power Flow: Computational methods and low voltage applications.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:55165be7-4238-41e6-9ecb-60640616b5d2

► Technical developments in generation and demand of energy will motivate significant change in the electric power grid, both on the transmission and the distribution level.… (more)

▼ Technical developments in generation and demand of energy will motivate significant change in the electric power grid, both on the transmission and the distribution level. A major innovation would be the successful transformation of the current passive power grid towards an active and ICT-based smart grid. Among the technical efforts that will help to pursue this goal, the renewed interest in DC (direct current) distribution and transmission applications is playing an important role. In particular, the interest in the DC universal distribution networks is renewed since most of the renewable energy generation technologies (e.g. PV modules, fuel cells) and loads (e.g. LED lighting, electric vehicles) are DC-native. Their direct connection would allow to skip conversion steps, thus providing higher efficiency. The focus of this thesis lies on the steady-state power flow analysis, a numerical study used in electrical engineering to assess the flows of power in the network. The aim of the thesis is to review the state of the art in computational methods for AC and DC power flow analysis and to determine a suitable method to develop a power flow tool for the DC framework. The literature study revealed that most algorithms aim to solve the non-linear power flow problem without taking into account characteristics typical of future DC networks, such as highly meshed topologies and constant power converters. An innovative power flow method has there- fore been developed in order to include different node behaviours, such as constant voltage, constant current, constant impedance, constant power and I-V droop control. A case study based on the IEEE European Low-Voltage Test Feeder is analysed to provide an example of the application of the power flow tool. The thesis shows that it is possible to linearize the system equations considering the constant power node either as a current source or as a parallel of current source and impedance. Both methods allow very fast convergence for complex meshed networks, and can therefore be adopted for diverse studies such as market analysis and N-1 redundancy analysis, among others. Advisors/Committee Members: Bauer, Pavol (mentor), Ramirez Elizondo, Laura (graduation committee), Rueda Torres, Jose (graduation committee), van der Blij, Nils (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: power flow; DC; steady-state; distribution grid; low voltage

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APA (6^th Edition):

Chaifouroosh Mamagany, D. (. (2018). Direct Current Power Flow: Computational methods and low voltage applications. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:55165be7-4238-41e6-9ecb-60640616b5d2

Chicago Manual of Style (16^th Edition):

Chaifouroosh Mamagany, Dario (author). “Direct Current Power Flow: Computational methods and low voltage applications.” 2018. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:55165be7-4238-41e6-9ecb-60640616b5d2.

MLA Handbook (7^th Edition):

Chaifouroosh Mamagany, Dario (author). “Direct Current Power Flow: Computational methods and low voltage applications.” 2018. Web. 07 Mar 2021.

Vancouver:

Chaifouroosh Mamagany D(. Direct Current Power Flow: Computational methods and low voltage applications. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:55165be7-4238-41e6-9ecb-60640616b5d2.

Council of Science Editors:

Chaifouroosh Mamagany D(. Direct Current Power Flow: Computational methods and low voltage applications. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:55165be7-4238-41e6-9ecb-60640616b5d2

19. Sterling, Kenneth Alan. Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi).

Degree: M.S. in Biological Science, Biological Science, 2011, University of Mississippi

URL: https://egrove.olemiss.edu/etd/272

► The Yazoo Darter is a range-restricted endemic fish in north-central Mississippi. Because the limited and fragmented range of this species puts it at risk of… (more)

Subjects/Keywords: Conservation; Distribution; Effective Population Size; Etheostoma; Gene Flow; Habitat Fragmentation; Biology

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APA (6^th Edition):

Sterling, K. A. (2011). Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi). (Thesis). University of Mississippi. Retrieved from https://egrove.olemiss.edu/etd/272

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):

Sterling, Kenneth Alan. “Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi).” 2011. Thesis, University of Mississippi. Accessed March 07, 2021. https://egrove.olemiss.edu/etd/272.

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

MLA Handbook (7^th Edition):

Sterling, Kenneth Alan. “Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi).” 2011. Web. 07 Mar 2021.

Vancouver:

Sterling KA. Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi). [Internet] [Thesis]. University of Mississippi; 2011. [cited 2021 Mar 07]. Available from: https://egrove.olemiss.edu/etd/272.

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

Council of Science Editors:

Sterling KA. Conservation Genetics and Distribution of the Yazoo Darter (Etheostoma Raneyi). [Thesis]. University of Mississippi; 2011. Available from: https://egrove.olemiss.edu/etd/272

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

University of Illinois – Urbana-Champaign

20. Kim, Su Min. Polyploidy evolution in Spartina pectinata L.: neopolyploid formation and cytogeographic distribution.

Degree: MS, 0030, 2012, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/31911

► The next generation of bioenergy crops will probably be grown on marginal lands. Prairie cordgrass (Spartina pectinata Link) is well suited to marginal land that… (more)

Subjects/Keywords: Prairie cordgrass (Spartina pectinata Link); polyploid; flow cytometry; cytogeographic distribution

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APA (6^th Edition):

Kim, S. M. (2012). Polyploidy evolution in Spartina pectinata L.: neopolyploid formation and cytogeographic distribution. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/31911

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):

Kim, Su Min. “Polyploidy evolution in Spartina pectinata L.: neopolyploid formation and cytogeographic distribution.” 2012. Thesis, University of Illinois – Urbana-Champaign. Accessed March 07, 2021. http://hdl.handle.net/2142/31911.

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

MLA Handbook (7^th Edition):

Kim, Su Min. “Polyploidy evolution in Spartina pectinata L.: neopolyploid formation and cytogeographic distribution.” 2012. Web. 07 Mar 2021.

Vancouver:

Kim SM. Polyploidy evolution in Spartina pectinata L.: neopolyploid formation and cytogeographic distribution. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2012. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/2142/31911.

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

Council of Science Editors:

Kim SM. Polyploidy evolution in Spartina pectinata L.: neopolyploid formation and cytogeographic distribution. [Thesis]. University of Illinois – Urbana-Champaign; 2012. Available from: http://hdl.handle.net/2142/31911

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

University of Minnesota

21. Lyons, Marta. Moving up: Using climate, physiology, and gene flow to characterize current and future geographic range limits in montane salamanders.

Degree: PhD, Ecology, Evolution and Behavior, 2017, University of Minnesota

URL: http://hdl.handle.net/11299/194576

► What causes, maintains, and changes species’ geographic ranges are central questions in ecology and evolution. Geographic ranges are a complex product of both ecological and… (more)

▼ What causes, maintains, and changes species’ geographic ranges are central questions in ecology and evolution. Geographic ranges are a complex product of both ecological and evolutionary processes, reflecting current biotic and abiotic conditions as well as gene flow, drift, adaptation, and history. It is only through understanding the factors that influence species past and present distributions that we can begin to accurately predict how these distributions will change in the future. Anthropogenic climate change poses a major threat to native biodiversity around the world, but especially in montane systems. Understanding the dynamics at these lower elevation range limits is of particular importance. My dissertation has sought to elucidate why adaptation fails at the range edge and how that influences current and future species distributions. For this work, I focused on mountaintop, terrestrial, lungless salamanders of the genus Plethodon. A commonly invoked hypothesis for the inhibition of range expansion centers around the idea that asymmetrical gene flow from a densely populated range center prevents local adaptation at the range periphery. In Chapter 1, I quantified gene flow and effective population size along a bidirectional elevation transect in the Smoky Mountains, for the species Plethodon jordani. I found evidence for downslope biased gene flow and more dense mountaintop populations. In Chapter 3, I further explored the potential for asymmetric gene flow to limit adaptation by assessing both gene flow and phenotypic differentiation in the species Plethodon ouachitae in the Ouachita Mountains. Unlike my findings in the Smoky Mountains, in the Ouachitas, there was no indication of asymmetrically biased downslope gene flow, even though population density appears to diminish at low elevation. On the majority of transects movement appeared to be biased upslope. Within a single mountain, I found sampling sites were connected by gene flow supporting a single panmictic population within a mountain. Between mountains, I found an overall signature of genetic structure with populations segregating by mountain, supporting prior work that indicated unique mitochondrial lineages on each mountain. Correlative niche models built on occurrence records for each individual mountain indicate that the abiotic conditions occupied by populations on each mountain are different. These same metrics have been used in other work to indicate niche divergence between species and as indication of niche adaptation. However, I found neither differentiation in metabolic rate thermal sensitivity nor differentiation in acclimation ability between populations on different mountains and populations at different elevations. These findings support that mountaintop endemic Plethodon, even in the absence of gene flow shows conservation in these ecophysiological traits. In Chapter 2, I used this species-specific physiology to predict shifts in future distributions for four montane Plethodon in the Southern Appalachians. I was able to predict…

Subjects/Keywords: Ecophysiology; Gene flow; Niche; Plethodon; Range limit; Species Distribution Model

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APA (6^th Edition):

Lyons, M. (2017). Moving up: Using climate, physiology, and gene flow to characterize current and future geographic range limits in montane salamanders. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/194576

Chicago Manual of Style (16^th Edition):

Lyons, Marta. “Moving up: Using climate, physiology, and gene flow to characterize current and future geographic range limits in montane salamanders.” 2017. Doctoral Dissertation, University of Minnesota. Accessed March 07, 2021. http://hdl.handle.net/11299/194576.

MLA Handbook (7^th Edition):

Lyons, Marta. “Moving up: Using climate, physiology, and gene flow to characterize current and future geographic range limits in montane salamanders.” 2017. Web. 07 Mar 2021.

Vancouver:

Lyons M. Moving up: Using climate, physiology, and gene flow to characterize current and future geographic range limits in montane salamanders. [Internet] [Doctoral dissertation]. University of Minnesota; 2017. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11299/194576.

Council of Science Editors:

Lyons M. Moving up: Using climate, physiology, and gene flow to characterize current and future geographic range limits in montane salamanders. [Doctoral Dissertation]. University of Minnesota; 2017. Available from: http://hdl.handle.net/11299/194576

University of South Florida

22. Chen, Ying Chih. Visualizing Load Path in Perforated Shear Walls.

Degree: 2018, University of South Florida

URL: https://scholarcommons.usf.edu/etd/7609

► Shear walls are the primary lateral load resisting elements in bearing wall systems used in masonry construction. Horizontal loads due to wind or earthquake are… (more)

▼ Shear walls are the primary lateral load resisting elements in bearing wall systems used in masonry construction. Horizontal loads due to wind or earthquake are transferred to vertical walls by diaphragms that are rigid such as concrete floor slabs or flexible such as wood floors. With rigid diaphragms, loads are apportioned to the supporting walls based on their relative rigidity. Walls with openings accommodating doors and windows (“perforated walls”) have reduced rigidity that can be determined using available hand calculation methods. These methods primarily focus on analysis procedures, not on the visualization of the load path that is critically important in structural engineering practice. The analogy of springs in series or parallel is used to determine the equivalent stiffness of elastic systems in structural dynamics. This thesis uses this analogy to develop a method that can help visualize load flow in perforated shear walls connected to rigid diaphragms. Rigidities are calculated using existing methods and combined as springs in series or parallel to represent a perforated wall. Loads taken by the wall segments correspond to the electrical current flowing through this imaginary “circuit”. To help visualize the load path, the line drawing representation of springs in series or parallel and the applied lateral load are deliberately oriented in the vertical direction. The application of the analogy is illustrated by several numerical examples of varying complexity taken from text books. Finite element solutions are included in the comparisons to provide a measure of the relative accuracy of hand calculation methods. The analogy can be extended to refine existing hand calculation methods though this increases computational effort. It improves accuracy but only for cases where the aspect ratio of the wall segments is such that shear effects are dominant.

Subjects/Keywords: force distribution; force flow; openings; refined method; rigidity; Engineering

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APA (6^th Edition):

Chen, Y. C. (2018). Visualizing Load Path in Perforated Shear Walls. (Thesis). University of South Florida. Retrieved from https://scholarcommons.usf.edu/etd/7609

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):

Chen, Ying Chih. “Visualizing Load Path in Perforated Shear Walls.” 2018. Thesis, University of South Florida. Accessed March 07, 2021. https://scholarcommons.usf.edu/etd/7609.

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

MLA Handbook (7^th Edition):

Chen, Ying Chih. “Visualizing Load Path in Perforated Shear Walls.” 2018. Web. 07 Mar 2021.

Vancouver:

Chen YC. Visualizing Load Path in Perforated Shear Walls. [Internet] [Thesis]. University of South Florida; 2018. [cited 2021 Mar 07]. Available from: https://scholarcommons.usf.edu/etd/7609.

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

Council of Science Editors:

Chen YC. Visualizing Load Path in Perforated Shear Walls. [Thesis]. University of South Florida; 2018. Available from: https://scholarcommons.usf.edu/etd/7609

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

University of Hawaii – Manoa

23. Kastl, Brian Christopher. Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/101661

►

M.S. University of Hawaii at Manoa 2010.

Spatiotemporal variability in the deposits of lahars offers insights into the characteristics and fluid dynamics of these sediment-laden… (more)

▼

M.S. University of Hawaii at Manoa 2010.

Spatiotemporal variability in the deposits of lahars offers insights into the characteristics and fluid dynamics of these sediment-laden flows. The 18 March 2007 Crater Lake break-out lahar at Mount Ruapehu, New Zealand, emplaced 1.4 million m3 of both massive and bedded deposits over the first 47.4 km of its flow path. Traditionally these would be classified as debris flow and hyperconcentrated flow deposits, respectively. Grain size and componentry analyses were performed on samples collected over the first 11 km of the flow path, for both the 2007 lahar itself and pre-existing deposits that contributed sediment to the lahar. Altered landslide material contributed a major proportion of sediment to the flow 400 – 800 m from the source of the lahar, and was used as a marker to understand downstream evolution of flow characteristics. Variations in the proportions of this altered landslide material with grain size and distance suggest that abrasion and cataclasis occurred during transport. Furthermore, altered landslide clasts are more rounded than all other sediment types, demonstrating greater susceptibility of the former to mechanical breakdown, which influences flow rheology. Ten of sixteen samples of the 2007 lahar deposit exhibit bimodal grainsize distributions. Primary modes coarsen with depth at locations where samples could be collected at multiple depths, while distinctive weak sand-sized (1 – 2Φ) secondary modes become more pronounced with depth in the deposit. Sand-sized primary modes exist 7 km from source, in deposits near the head of a side channel that captured the upper portion of the lahar after it overtopped a drainage divide. We put forth a model for deposition in the first 11 km reach by the waning phase of a lahar with a concentrated basal flow and a strong vertical sediment concentration gradient. As the sediment concentration of the flow reached its peak, the basal region generated sand grains through abrasion and cataclasis during intergranular collisions. This sand was also transported in the upper dilute transport region of the current and is preserved as secondary modes in deposits produced by rapid vertical accretion. As the sediment concentration of the flow decreased over time, turbulence increased in the basal flow, causing selective, incremental deposition of sediment now depleted in sand, and ultimately finer-grained, stratified deposits. Our results support the concept that deposit characteristics are highly dependent on the stratification of the flow and the depositional regime, both of which evolve over time and are controlled by the sediment concentration and flow competence.

Subjects/Keywords: lahar; deposition; grain size distribution; stratification; basal flow

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APA (6^th Edition):

Kastl, B. C. (2016). Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/101661

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):

Kastl, Brian Christopher. “Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand.” 2016. Thesis, University of Hawaii – Manoa. Accessed March 07, 2021. http://hdl.handle.net/10125/101661.

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

MLA Handbook (7^th Edition):

Kastl, Brian Christopher. “Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand.” 2016. Web. 07 Mar 2021.

Vancouver:

Kastl BC. Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10125/101661.

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

Council of Science Editors:

Kastl BC. Erosional and depositional processes of the 18 March 2007 lahar at Mt. Ruapehu, New Zealand. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/101661

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

Louisiana State University

24. Shojaat, Siavash. Sustained Flow Index: A Stochastic Measure of Freeway Performance.

Degree: DEng, Transportation Engineering, 2017, Louisiana State University

URL: https://digitalcommons.lsu.edu/gradschool_dissertations/4170

► The capacity of a road addresses its quantitative traffic carrying ability. The estimation of capacity as a parameter to assess traffic flow performance on… (more)

▼ The capacity of a road addresses its quantitative traffic carrying ability. The estimation of capacity as a parameter to assess traffic flow performance on freeway facilities has received considerable attention in the literature. Research into the traffic operation at high volumes reveals that the capacity of freeways is not a fixed number, but rather a random variable. Thus, in a stochastic approach to freeway capacity of estimation, the capacity is treated as a random variable generated from a population of flow observations, stemmed from a certain distribution function. Since the type of capacity distribution function is generally not known with certainty, it needs to be modeled. The Normal and the Weibull distributions have been among the most common function types that were suggested for freeway capacity. In this research, different capacity distribution types were tested for freeway facilities by applying the models for censored data on empirical observations of United States (U.S.) freeways. Based on the findings of this research and the results of previous studies on German freeways, it was suggested that the capacity distribution function may be characterized with left-skewedness. Since traditional operational performance measures for the analysis of traffic flow on freeways typically disregard the randomness of capacity, new approaches to make use of the concept of randomness within freeway operation analysis are necessary. To address this need, this research introduces a new indicator of freeway performance based solely on a stochastic approach to capacity estimation. This new indicator, the Sustained Flow Index (SFI), was defined as the product of the traffic volume and the probability of survival of this volume (as the probability that the acceptable traffic operation can be sustained). By maximizing the SFI, the optimum volume that can be carried by a freeway over prolonged time periods was derived from parameters of different capacity distribution functions. The breakdown probability (the probability that the acceptable traffic operation fails) corresponding to the optimum volume may be used as a benchmark to select a single value from the capacity distribution function. To validate the optimum volumes as design capacity values, an empirical comparison was made between the conventional capacity estimates and optimum volumes for 19 freeway sections in the U.S. The results show that, on average, optimum volumes obtained by maximizing the SFI corresponded well to conventional capacity values. To illustrate the application of the SFI, a ramp metering algorithm was modified to enhance performance of a freeway section.

Subjects/Keywords: Freeway Capacity; Capacity Distribution Function; Sustained Flow Index

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APA (6^th Edition):

Shojaat, S. (2017). Sustained Flow Index: A Stochastic Measure of Freeway Performance. (Doctoral Dissertation). Louisiana State University. Retrieved from https://digitalcommons.lsu.edu/gradschool_dissertations/4170

Chicago Manual of Style (16^th Edition):

Shojaat, Siavash. “Sustained Flow Index: A Stochastic Measure of Freeway Performance.” 2017. Doctoral Dissertation, Louisiana State University. Accessed March 07, 2021. https://digitalcommons.lsu.edu/gradschool_dissertations/4170.

MLA Handbook (7^th Edition):

Shojaat, Siavash. “Sustained Flow Index: A Stochastic Measure of Freeway Performance.” 2017. Web. 07 Mar 2021.

Vancouver:

Shojaat S. Sustained Flow Index: A Stochastic Measure of Freeway Performance. [Internet] [Doctoral dissertation]. Louisiana State University; 2017. [cited 2021 Mar 07]. Available from: https://digitalcommons.lsu.edu/gradschool_dissertations/4170.

Council of Science Editors:

Shojaat S. Sustained Flow Index: A Stochastic Measure of Freeway Performance. [Doctoral Dissertation]. Louisiana State University; 2017. Available from: https://digitalcommons.lsu.edu/gradschool_dissertations/4170

Louisiana State University

25. Lestage, Robert B. Examination of blood flow using vasoconstrictor and vasodilator stimuli: stability and reproducibility.

Degree: MS, Kinesiology, 2006, Louisiana State University

URL: etd-05312006-163518 ; https://digitalcommons.lsu.edu/gradschool_theses/3429

► Blood flow distribution relies on the vasculature’s ability to vasodilate and vasoconstrict throughout the body. Most previous research has focused on only one of these… (more)

Subjects/Keywords: plethysmography; blood flow distribution

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APA (6^th Edition):

Lestage, R. B. (2006). Examination of blood flow using vasoconstrictor and vasodilator stimuli: stability and reproducibility. (Masters Thesis). Louisiana State University. Retrieved from etd-05312006-163518 ; https://digitalcommons.lsu.edu/gradschool_theses/3429

Chicago Manual of Style (16^th Edition):

Lestage, Robert B. “Examination of blood flow using vasoconstrictor and vasodilator stimuli: stability and reproducibility.” 2006. Masters Thesis, Louisiana State University. Accessed March 07, 2021. etd-05312006-163518 ; https://digitalcommons.lsu.edu/gradschool_theses/3429.

MLA Handbook (7^th Edition):

Lestage, Robert B. “Examination of blood flow using vasoconstrictor and vasodilator stimuli: stability and reproducibility.” 2006. Web. 07 Mar 2021.

Vancouver:

Lestage RB. Examination of blood flow using vasoconstrictor and vasodilator stimuli: stability and reproducibility. [Internet] [Masters thesis]. Louisiana State University; 2006. [cited 2021 Mar 07]. Available from: etd-05312006-163518 ; https://digitalcommons.lsu.edu/gradschool_theses/3429.

Council of Science Editors:

Lestage RB. Examination of blood flow using vasoconstrictor and vasodilator stimuli: stability and reproducibility. [Masters Thesis]. Louisiana State University; 2006. Available from: etd-05312006-163518 ; https://digitalcommons.lsu.edu/gradschool_theses/3429

26. Brakefield, Bryn. Using Saddlepoint Approximations and Likelihood-Based Methods to Conduct Statistical Inference for the Mean of the Beta Distribution.

Degree: MS- Mathematical Sciences, Mathematics and Statistics, 2020, Stephen F. Austin State University

URL: https://scholarworks.sfasu.edu/etds/331

► The prevalence of conducting statistical inference for the mean of the beta distribution has been rising in various fields of academic research, such as… (more)

Subjects/Keywords: statistical inference; beta distribution; saddlepoint approximations; flow cytometry; Statistical Theory

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APA (6^th Edition):

Brakefield, B. (2020). Using Saddlepoint Approximations and Likelihood-Based Methods to Conduct Statistical Inference for the Mean of the Beta Distribution. (Masters Thesis). Stephen F. Austin State University. Retrieved from https://scholarworks.sfasu.edu/etds/331

Chicago Manual of Style (16^th Edition):

Brakefield, Bryn. “Using Saddlepoint Approximations and Likelihood-Based Methods to Conduct Statistical Inference for the Mean of the Beta Distribution.” 2020. Masters Thesis, Stephen F. Austin State University. Accessed March 07, 2021. https://scholarworks.sfasu.edu/etds/331.

MLA Handbook (7^th Edition):

Brakefield, Bryn. “Using Saddlepoint Approximations and Likelihood-Based Methods to Conduct Statistical Inference for the Mean of the Beta Distribution.” 2020. Web. 07 Mar 2021.

Vancouver:

Brakefield B. Using Saddlepoint Approximations and Likelihood-Based Methods to Conduct Statistical Inference for the Mean of the Beta Distribution. [Internet] [Masters thesis]. Stephen F. Austin State University; 2020. [cited 2021 Mar 07]. Available from: https://scholarworks.sfasu.edu/etds/331.

Council of Science Editors:

Brakefield B. Using Saddlepoint Approximations and Likelihood-Based Methods to Conduct Statistical Inference for the Mean of the Beta Distribution. [Masters Thesis]. Stephen F. Austin State University; 2020. Available from: https://scholarworks.sfasu.edu/etds/331

Colorado State University

27. Cubley, Erin Susan. Relationship of riparian vegetation guilds to alluvial groundwater, flood disturbance, and the provisioning of bird habitat along rivers in the Colorado River basin, The.

Degree: PhD, Ecology, 2020, Colorado State University

URL: http://hdl.handle.net/10217/219597

► Riparian ecosystems provide essential services including flood mitigation, organic matter and energy, nutrient cycling, and wildlife habitat with their structure and function strongly influenced by… (more)

▼ Riparian ecosystems provide essential services including flood mitigation, organic matter and energy, nutrient cycling, and wildlife habitat with their structure and function strongly influenced by fluvial processes and shallow groundwater. Riparian areas across the world have been degraded by land development and the alteration of streamflow by dams, diversions, dikes, and groundwater pumping. Climate change will further stress riparian ecosystems and the Colorado River is predicted to experience the largest decrease in streamflow of the major basins in the western US. Changes in the patterns of stream flow can result in the alteration of plant communities, physical structure, and overall ecosystem functioning. Efforts to understand how plant species are distributed along hydrologic gradients in riparian zones have focused on individual species. The use of vegetation guilds, groups of plants with similar functional traits, may be useful in generalizing plant responses to streamflow alterations across rivers. The identification of trait-based guilds with member species that respond similarly to stressors common along rivers directly links plant performance to environmental processes. The range of traits within a vegetation guild can also help explain how functionally similar species contribute to vegetation structure and heterogeneity that supports habitat for wildlife, including birds that rely on riparian ecosystems for breeding, foraging, nesting, and migration. In Chapter 1, I investigate the relationship between riparian vegetation guilds, vegetation structure, and bird habitat along the Verde River in Arizona. Five woody and seven herbaceous guilds were classified using a suite of functional traits including specific leaf area, potential rooting depth, and seed mass. Bird abundance, diversity, and richness were best predicted by the cover of the tall tree guild dominated by Salix gooddingii and the drought tolerant shrub guild dominated by Prosopis velutina. These results highlight the need to conserve not only riparian forests, but shrubs that provide food and nesting sites for bird species that prefer low-statured vegetation. In Chapter 2, I assess the connection between Verde River streamflow, alluvial groundwater, and the occurrence of woody and herbaceous riparian vegetation guilds. Groundwater depth was strongly controlled by streamflow changes and tall tree guild members were more likely to occur where groundwater was less than 2.5 m from the floodplain surface. The distribution of woody vegetation guilds was explained by groundwater depth and flood exceedance probability, but hydrologic attributes only explained variation in occurrence of two herbaceous guilds. Simulations of lowered groundwater indicate that presences of tall trees, short trees, and flood tolerant shrubs will decrease while drought tolerant shrubs and generalist shrubs will increase along the Verde River. In the final chapter I determine if riparian vegetation guilds occupy similar habitat controlled by groundwater depth and flooding… Advisors/Committee Members: Cooper, David J. (advisor), Merritt, David M. (committee member), Wohl, Ellen E. (committee member), Kampf, Stephanie (committee member).

Subjects/Keywords: plant distribution; Verde River; flow response guild; wildlife habitat; riparian

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APA (6^th Edition):

Cubley, E. S. (2020). Relationship of riparian vegetation guilds to alluvial groundwater, flood disturbance, and the provisioning of bird habitat along rivers in the Colorado River basin, The. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/219597

Chicago Manual of Style (16^th Edition):

Cubley, Erin Susan. “Relationship of riparian vegetation guilds to alluvial groundwater, flood disturbance, and the provisioning of bird habitat along rivers in the Colorado River basin, The.” 2020. Doctoral Dissertation, Colorado State University. Accessed March 07, 2021. http://hdl.handle.net/10217/219597.

MLA Handbook (7^th Edition):

Cubley, Erin Susan. “Relationship of riparian vegetation guilds to alluvial groundwater, flood disturbance, and the provisioning of bird habitat along rivers in the Colorado River basin, The.” 2020. Web. 07 Mar 2021.

Vancouver:

Cubley ES. Relationship of riparian vegetation guilds to alluvial groundwater, flood disturbance, and the provisioning of bird habitat along rivers in the Colorado River basin, The. [Internet] [Doctoral dissertation]. Colorado State University; 2020. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/10217/219597.

Council of Science Editors:

Cubley ES. Relationship of riparian vegetation guilds to alluvial groundwater, flood disturbance, and the provisioning of bird habitat along rivers in the Colorado River basin, The. [Doctoral Dissertation]. Colorado State University; 2020. Available from: http://hdl.handle.net/10217/219597

Colorado School of Mines

28. Ponyik, Charles Adelbert. Characterization of complex polymers of poly(styrene) and poly(acrylate) by thermal field-flow fractionation with light scattering and other detection.

Degree: MS(M.S.), Chemistry and Geochemistry, 2016, Colorado School of Mines

URL: http://hdl.handle.net/11124/170045

► Polymers are an important class of materials, with applications in medicine, construction, personal care, textiles, safety, packaging, and still other fields. Their properties are derived… (more)

Subjects/Keywords: architecture; bottlebrush; branching; composition distribution; field-flow fractionation; separations

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APA (6^th Edition):

Ponyik, C. A. (2016). Characterization of complex polymers of poly(styrene) and poly(acrylate) by thermal field-flow fractionation with light scattering and other detection. (Masters Thesis). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/170045

Chicago Manual of Style (16^th Edition):

Ponyik, Charles Adelbert. “Characterization of complex polymers of poly(styrene) and poly(acrylate) by thermal field-flow fractionation with light scattering and other detection.” 2016. Masters Thesis, Colorado School of Mines. Accessed March 07, 2021. http://hdl.handle.net/11124/170045.

MLA Handbook (7^th Edition):

Ponyik, Charles Adelbert. “Characterization of complex polymers of poly(styrene) and poly(acrylate) by thermal field-flow fractionation with light scattering and other detection.” 2016. Web. 07 Mar 2021.

Vancouver:

Ponyik CA. Characterization of complex polymers of poly(styrene) and poly(acrylate) by thermal field-flow fractionation with light scattering and other detection. [Internet] [Masters thesis]. Colorado School of Mines; 2016. [cited 2021 Mar 07]. Available from: http://hdl.handle.net/11124/170045.

Council of Science Editors:

Ponyik CA. Characterization of complex polymers of poly(styrene) and poly(acrylate) by thermal field-flow fractionation with light scattering and other detection. [Masters Thesis]. Colorado School of Mines; 2016. Available from: http://hdl.handle.net/11124/170045

Delft University of Technology

29. van Lindonk, William (author). Speed limits and their effect on freeway capacity: An investigation of two lane freeway bottlenecks.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:1181cb6e-ff70-4f12-bea6-ab513865d4e8

► In this thesis an investigation is performed into the effect of different speed limits on freeway capacity. From literature, much is known about the variety… (more)

▼ In this thesis an investigation is performed into the effect of different speed limits on freeway capacity. From literature, much is known about the variety of factors that affect capacity, but the exact effect of the speed limit on capacity is not yet clear. In recent years, several speed limits changes have taken place at multiple two-lane freeway bottlenecks throughout The Netherlands, which makes it possible to compare effects of different speed limits at the same location. To evaluate the effect of the speed limit on capacity, the Product Limit Method has been applied to identify breakdown flows and generate capacity distributions, which could subsequently be compared for different limits. In the comparison of capacity distributions under different speed limits, it was found that significant changes in capacity had occurred, but that no uniform direction of the effect could be found. Subsequently, to control for location specific factors and other variables, Fixed Effects regression has been used to determine the effect of the speed limit on the breakdown flow. It was found that the breakdown flow under the 120 km/h limit was significantly higher than under the 130 km/h limit (in the range of 60 to 190 vehicles per hour) and that the breakdown flow under the 100 km/h limit was, in some cases, also higher than under the 130 km/h limit. In addition to this, it was found that a significant positive relation exists between the height of the speed limit and the fraction of flow in the passing lane. Moreover, it was shown that the relation between the fraction of flow in the passing lane and the level of breakdown flow was best represented by a quadratic relation, which could indicate that an “optimal” distribution of flows may exist. Given the results of this thesis, it is posed that a change in the speed limit is likely to affect capacity primarily through altering the lane flow distribution and that it will depend on the layout of a freeway location what the optimal lane flow distribution is and which speed limit leads to this optimal lane flow distribution. Advisors/Committee Members: Hoogendoorn, S.P. (mentor), Knoop, V.L. (graduation committee), van Cranenburgh, S. (graduation committee), Taale, H. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Speed Limits; Capacity Research; Breakdown Flow; Product Limit Method; Fixed Effects Regression; Two-Lane Freeway; Traffic Flow Theory; Lane Flow Distribution; Bottleneck Identification; Capacity Distribution

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APA (6^th Edition):

van Lindonk, W. (. (2020). Speed limits and their effect on freeway capacity: An investigation of two lane freeway bottlenecks. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:1181cb6e-ff70-4f12-bea6-ab513865d4e8

Chicago Manual of Style (16^th Edition):

van Lindonk, William (author). “Speed limits and their effect on freeway capacity: An investigation of two lane freeway bottlenecks.” 2020. Masters Thesis, Delft University of Technology. Accessed March 07, 2021. http://resolver.tudelft.nl/uuid:1181cb6e-ff70-4f12-bea6-ab513865d4e8.

MLA Handbook (7^th Edition):

van Lindonk, William (author). “Speed limits and their effect on freeway capacity: An investigation of two lane freeway bottlenecks.” 2020. Web. 07 Mar 2021.

Vancouver:

van Lindonk W(. Speed limits and their effect on freeway capacity: An investigation of two lane freeway bottlenecks. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 07]. Available from: http://resolver.tudelft.nl/uuid:1181cb6e-ff70-4f12-bea6-ab513865d4e8.

Council of Science Editors:

van Lindonk W(. Speed limits and their effect on freeway capacity: An investigation of two lane freeway bottlenecks. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:1181cb6e-ff70-4f12-bea6-ab513865d4e8

Université de Grenoble

30. Tingaud, Florian. Etude expérimentale de l'amélioration de la distribution diphasique dans un échangeur thermique à l'aide d'ultrasons : Experimental study of the enhancement of the two-phase distribution in a heat exchanger using ultrasound.

Degree: Docteur es, Mécanique des fluides, procédés, énergétique, 2012, Université de Grenoble

URL: http://www.theses.fr/2012GRENI096

►

Les préoccupations relatives à la consommation de l’énergie et notamment des pertes provoquent une demande d’optimisation toujours plus forte des procédés. La recherche de l’efficacité… (more)

▼

Les préoccupations relatives à la consommation de l’énergie et notamment des pertes provoquent une demande d’optimisation toujours plus forte des procédés. La recherche de l’efficacité maximale dans les échangeurs de chaleur est d’autant plus forte lorsque ceux-ci ne fonctionnent pas au régime nominal. L’étude présentée dans ce mémoire se concentre sur une problématique de l’efficacité des échangeurs thermiques : la distribution diphasique. Le but de ce travail a été de montrer la faisabilité d’un dispositif améliorant la répartition des deux phases dans un échangeur à mini canaux. La méthode choisie a été l’introduction d’ultrasons par le biais de générateurs placés dans le distributeur produisant une fontaine. Cette technologie présente l’avantage d’être facilement modulable en ne changeant que la tension d’entrée des appareils. Ceci permet donc de pouvoir adapter le dispositif aux différentes conditions opératoires. Des essais expérimentaux ont été réalisés dans différentes conditions, en changeant notamment le débit de chaque phase. La densité de flux massique a été variée de 60 kg.m-2.s-1 à 450 kg.m-2.s-1 et le titre massique de moins de 1% à plus de 23% en entrée de section d’essais. Les comparaisons entre les différents essais se sont faite par la mesure des débits de chaque phase sortant des canaux. L’introduction des ultrasons a également été étudiée en jouant sur le placement et le nombre des générateurs d’ultrasons. Cette technologie s’est alors montré viable car la distribution diphasique est améliorée dans une grande majorité des cas testés. Des phénomènes intéressant ont même été observés, permettant lors d’une prochaine étude, des approches différentes mais complémentaires.

Concerns about energy consumption including thermal losses cause a need in greater optimization of the processes. The goal of the maximum efficiency in heat exchangers is even stronger when they do not work at nominal conditions. The study presented in this paper focuses on the two-phase flow distribution problematic. The aim of this work was to demonstrate the feasibility of a device that can improve the distribution of the two phases in a mini-channel heat exchanger. The method chosen was the introduction of ultrasound through generators placed in the distributor where they can produce an ultrasonic fountain. This technology has the advantage of being easily adjustable by changing the input voltage of the devices. This therefore allows the device to adapt to different operating conditions. Experimental tests have been done under different conditions, in particular by changing the flow rate of each phase. The mass flow density was varied from 60 kg.m-2.s-1 to 450 kg.m-2.s-1 and the mass quality of less than 1% to over 23% at the tests section inlet. Comparisons between different tests were made by measuring flow rates of each phase at the outlet of the channels. The introduction of ultrasound was also studied by varying the placement and number of the generators of ultrasound. This technology has been shown as viable two-phase…

Advisors/Committee Members: Bontemps, André (thesis director), Ferrouillat, Sébastien (thesis director).

Subjects/Keywords: Mécanique des fluides; Distribution diphasique; Échangeur à minicanaux; Ultrasons; Fluid Mechanics; Two-phase flow; Distribution mini-channel Exchanger; Ultrasounds; 620

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

APA (6^th Edition):

Tingaud, F. (2012). Etude expérimentale de l'amélioration de la distribution diphasique dans un échangeur thermique à l'aide d'ultrasons : Experimental study of the enhancement of the two-phase distribution in a heat exchanger using ultrasound. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2012GRENI096

Chicago Manual of Style (16^th Edition):

Tingaud, Florian. “Etude expérimentale de l'amélioration de la distribution diphasique dans un échangeur thermique à l'aide d'ultrasons : Experimental study of the enhancement of the two-phase distribution in a heat exchanger using ultrasound.” 2012. Doctoral Dissertation, Université de Grenoble. Accessed March 07, 2021. http://www.theses.fr/2012GRENI096.

MLA Handbook (7^th Edition):

Tingaud, Florian. “Etude expérimentale de l'amélioration de la distribution diphasique dans un échangeur thermique à l'aide d'ultrasons : Experimental study of the enhancement of the two-phase distribution in a heat exchanger using ultrasound.” 2012. Web. 07 Mar 2021.

Vancouver:

Tingaud F. Etude expérimentale de l'amélioration de la distribution diphasique dans un échangeur thermique à l'aide d'ultrasons : Experimental study of the enhancement of the two-phase distribution in a heat exchanger using ultrasound. [Internet] [Doctoral dissertation]. Université de Grenoble; 2012. [cited 2021 Mar 07]. Available from: http://www.theses.fr/2012GRENI096.

Council of Science Editors:

Tingaud F. Etude expérimentale de l'amélioration de la distribution diphasique dans un échangeur thermique à l'aide d'ultrasons : Experimental study of the enhancement of the two-phase distribution in a heat exchanger using ultrasound. [Doctoral Dissertation]. Université de Grenoble; 2012. Available from: http://www.theses.fr/2012GRENI096

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Open Access Theses and Dissertations