subject:(hydraulic measurements)

Oregon State University

1. Winiarski, Lawrence Decker. A method of calculating non-steady compressible flow in a propulsive duct.

Degree: PhD, Mechanical and Nuclear Engineering, 1972, Oregon State University

URL: http://hdl.handle.net/1957/45388

► A numerical technique is presented for solving the gas dynamics of a pulsating combustor. The computer solution which is developed follows directly from the fundamental… (more)

Subjects/Keywords: Hydraulic measurements

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APA (6^th Edition):

Winiarski, L. D. (1972). A method of calculating non-steady compressible flow in a propulsive duct. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/45388

Chicago Manual of Style (16^th Edition):

Winiarski, Lawrence Decker. “A method of calculating non-steady compressible flow in a propulsive duct.” 1972. Doctoral Dissertation, Oregon State University. Accessed March 05, 2021. http://hdl.handle.net/1957/45388.

MLA Handbook (7^th Edition):

Winiarski, Lawrence Decker. “A method of calculating non-steady compressible flow in a propulsive duct.” 1972. Web. 05 Mar 2021.

Vancouver:

Winiarski LD. A method of calculating non-steady compressible flow in a propulsive duct. [Internet] [Doctoral dissertation]. Oregon State University; 1972. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1957/45388.

Council of Science Editors:

Winiarski LD. A method of calculating non-steady compressible flow in a propulsive duct. [Doctoral Dissertation]. Oregon State University; 1972. Available from: http://hdl.handle.net/1957/45388

University of Hong Kong

2. Kwan, Wing-keung. Flow in multiple-orifice plate columns.

Degree: 1981, University of Hong Kong

URL: http://hdl.handle.net/10722/32763

Subjects/Keywords: Hydraulic measurements.

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APA (6^th Edition):

Kwan, W. (1981). Flow in multiple-orifice plate columns. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/32763

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):

Kwan, Wing-keung. “Flow in multiple-orifice plate columns.” 1981. Thesis, University of Hong Kong. Accessed March 05, 2021. http://hdl.handle.net/10722/32763.

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

MLA Handbook (7^th Edition):

Kwan, Wing-keung. “Flow in multiple-orifice plate columns.” 1981. Web. 05 Mar 2021.

Vancouver:

Kwan W. Flow in multiple-orifice plate columns. [Internet] [Thesis]. University of Hong Kong; 1981. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10722/32763.

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

Council of Science Editors:

Kwan W. Flow in multiple-orifice plate columns. [Thesis]. University of Hong Kong; 1981. Available from: http://hdl.handle.net/10722/32763

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

University of Hong Kong

3. Silva, Widanarallage Claude Albert de. Flow of water with low concentrations of setting solid spheres in a horizontal smooth pipe.

Degree: 1970, University of Hong Kong

URL: http://hdl.handle.net/10722/128547

Subjects/Keywords: Hydraulic measurements.; Hydraulics.

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APA (6^th Edition):

Silva, W. C. A. d. (1970). Flow of water with low concentrations of setting solid spheres in a horizontal smooth pipe. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/128547

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):

Silva, Widanarallage Claude Albert de. “Flow of water with low concentrations of setting solid spheres in a horizontal smooth pipe.” 1970. Thesis, University of Hong Kong. Accessed March 05, 2021. http://hdl.handle.net/10722/128547.

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

MLA Handbook (7^th Edition):

Silva, Widanarallage Claude Albert de. “Flow of water with low concentrations of setting solid spheres in a horizontal smooth pipe.” 1970. Web. 05 Mar 2021.

Vancouver:

Silva WCAd. Flow of water with low concentrations of setting solid spheres in a horizontal smooth pipe. [Internet] [Thesis]. University of Hong Kong; 1970. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10722/128547.

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

Council of Science Editors:

Silva WCAd. Flow of water with low concentrations of setting solid spheres in a horizontal smooth pipe. [Thesis]. University of Hong Kong; 1970. Available from: http://hdl.handle.net/10722/128547

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

University of Alberta

4. Weng, Debbie Li-Chen. Scales for the development of longitudinal velocity in a curved channel.

Degree: MS, Department of Civil Engineering, 1988, University of Alberta

URL: https://era.library.ualberta.ca/files/mc87pt092

Subjects/Keywords: Channels (Hydraulic engineering); Hydraulic measurements.; Streamflow velocity.; Stream measurements.

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APA (6^th Edition):

Weng, D. L. (1988). Scales for the development of longitudinal velocity in a curved channel. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/mc87pt092

Chicago Manual of Style (16^th Edition):

Weng, Debbie Li-Chen. “Scales for the development of longitudinal velocity in a curved channel.” 1988. Masters Thesis, University of Alberta. Accessed March 05, 2021. https://era.library.ualberta.ca/files/mc87pt092.

MLA Handbook (7^th Edition):

Weng, Debbie Li-Chen. “Scales for the development of longitudinal velocity in a curved channel.” 1988. Web. 05 Mar 2021.

Vancouver:

Weng DL. Scales for the development of longitudinal velocity in a curved channel. [Internet] [Masters thesis]. University of Alberta; 1988. [cited 2021 Mar 05]. Available from: https://era.library.ualberta.ca/files/mc87pt092.

Council of Science Editors:

Weng DL. Scales for the development of longitudinal velocity in a curved channel. [Masters Thesis]. University of Alberta; 1988. Available from: https://era.library.ualberta.ca/files/mc87pt092

University of Arizona

5. Perry, Norman Hagelberg, 1934-. Characteristics of segmental orifices .

Degree: 1963, University of Arizona

URL: http://hdl.handle.net/10150/347470

Subjects/Keywords: Hydraulic measurements.; Fluid mechanics.

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APA (6^th Edition):

Perry, Norman Hagelberg, 1. (1963). Characteristics of segmental orifices . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/347470

Chicago Manual of Style (16^th Edition):

Perry, Norman Hagelberg, 1934-. “Characteristics of segmental orifices .” 1963. Masters Thesis, University of Arizona. Accessed March 05, 2021. http://hdl.handle.net/10150/347470.

MLA Handbook (7^th Edition):

Perry, Norman Hagelberg, 1934-. “Characteristics of segmental orifices .” 1963. Web. 05 Mar 2021.

Vancouver:

Perry, Norman Hagelberg 1. Characteristics of segmental orifices . [Internet] [Masters thesis]. University of Arizona; 1963. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10150/347470.

Council of Science Editors:

Perry, Norman Hagelberg 1. Characteristics of segmental orifices . [Masters Thesis]. University of Arizona; 1963. Available from: http://hdl.handle.net/10150/347470

University of Arizona

6. Rising, Lucien Edward, 1927-. Efflux from eccentric and segmental orifices .

Degree: 1961, University of Arizona

URL: http://hdl.handle.net/10150/551527

Subjects/Keywords: Fluid mechanics.; Hydraulic measurements.

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APA (6^th Edition):

Rising, Lucien Edward, 1. (1961). Efflux from eccentric and segmental orifices . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/551527

Chicago Manual of Style (16^th Edition):

Rising, Lucien Edward, 1927-. “Efflux from eccentric and segmental orifices .” 1961. Masters Thesis, University of Arizona. Accessed March 05, 2021. http://hdl.handle.net/10150/551527.

MLA Handbook (7^th Edition):

Rising, Lucien Edward, 1927-. “Efflux from eccentric and segmental orifices .” 1961. Web. 05 Mar 2021.

Vancouver:

Rising, Lucien Edward 1. Efflux from eccentric and segmental orifices . [Internet] [Masters thesis]. University of Arizona; 1961. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10150/551527.

Council of Science Editors:

Rising, Lucien Edward 1. Efflux from eccentric and segmental orifices . [Masters Thesis]. University of Arizona; 1961. Available from: http://hdl.handle.net/10150/551527

University of Alberta

7. Hicks, Faye E. Shear and velocity near a sloped bank in a curved channel.

Degree: MS, Department of Civil Engineering, 1985, University of Alberta

URL: https://era.library.ualberta.ca/files/79408043f

Subjects/Keywords: Channels (Hydraulic engineering); Shear flow.; Streamflow velocity.; Hydraulic measurements.

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APA (6^th Edition):

Hicks, F. E. (1985). Shear and velocity near a sloped bank in a curved channel. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/79408043f

Chicago Manual of Style (16^th Edition):

Hicks, Faye E. “Shear and velocity near a sloped bank in a curved channel.” 1985. Masters Thesis, University of Alberta. Accessed March 05, 2021. https://era.library.ualberta.ca/files/79408043f.

MLA Handbook (7^th Edition):

Hicks, Faye E. “Shear and velocity near a sloped bank in a curved channel.” 1985. Web. 05 Mar 2021.

Vancouver:

Hicks FE. Shear and velocity near a sloped bank in a curved channel. [Internet] [Masters thesis]. University of Alberta; 1985. [cited 2021 Mar 05]. Available from: https://era.library.ualberta.ca/files/79408043f.

Council of Science Editors:

Hicks FE. Shear and velocity near a sloped bank in a curved channel. [Masters Thesis]. University of Alberta; 1985. Available from: https://era.library.ualberta.ca/files/79408043f

Michigan State University

8. Dalimonte, Lawrence Joseph. Experimental measurements of the flow field inside of an automotive torque converter.

Degree: MS, Department of Mechanical Engineering, 1998, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:26889

Subjects/Keywords: Hydraulic torque converters; Fluid dynamic measurements

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APA (6^th Edition):

Dalimonte, L. J. (1998). Experimental measurements of the flow field inside of an automotive torque converter. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:26889

Chicago Manual of Style (16^th Edition):

Dalimonte, Lawrence Joseph. “Experimental measurements of the flow field inside of an automotive torque converter.” 1998. Masters Thesis, Michigan State University. Accessed March 05, 2021. http://etd.lib.msu.edu/islandora/object/etd:26889.

MLA Handbook (7^th Edition):

Dalimonte, Lawrence Joseph. “Experimental measurements of the flow field inside of an automotive torque converter.” 1998. Web. 05 Mar 2021.

Vancouver:

Dalimonte LJ. Experimental measurements of the flow field inside of an automotive torque converter. [Internet] [Masters thesis]. Michigan State University; 1998. [cited 2021 Mar 05]. Available from: http://etd.lib.msu.edu/islandora/object/etd:26889.

Council of Science Editors:

Dalimonte LJ. Experimental measurements of the flow field inside of an automotive torque converter. [Masters Thesis]. Michigan State University; 1998. Available from: http://etd.lib.msu.edu/islandora/object/etd:26889

University of Arizona

9. Baudrit, Daniel, 1957-. FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW).

Degree: 1986, University of Arizona

URL: http://hdl.handle.net/10150/275569

Subjects/Keywords: Hydraulic gates.; Flow meters.; Stream measurements.

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APA (6^th Edition):

Baudrit, Daniel, 1. (1986). FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW). (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/275569

Chicago Manual of Style (16^th Edition):

Baudrit, Daniel, 1957-. “FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW). ” 1986. Masters Thesis, University of Arizona. Accessed March 05, 2021. http://hdl.handle.net/10150/275569.

MLA Handbook (7^th Edition):

Baudrit, Daniel, 1957-. “FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW). ” 1986. Web. 05 Mar 2021.

Vancouver:

Baudrit, Daniel 1. FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW). [Internet] [Masters thesis]. University of Arizona; 1986. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10150/275569.

Council of Science Editors:

Baudrit, Daniel 1. FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW). [Masters Thesis]. University of Arizona; 1986. Available from: http://hdl.handle.net/10150/275569

University of British Columbia

10. Wang, Hua. Head losses resulting from flow through wyes and manifolds.

Degree: Master of Applied Science - MASc, Civil Engineering, 1967, University of British Columbia

URL: http://hdl.handle.net/2429/36476

► Laboratory tests were conducted to determine the head losses in wyes and manifolds of conventional type, both with and without an internal tie-rod at the… (more)

Subjects/Keywords: Hydraulic measurements; Pipelines – Testing; Piping – Testing

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APA (6^th Edition):

Wang, H. (1967). Head losses resulting from flow through wyes and manifolds. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/36476

Chicago Manual of Style (16^th Edition):

Wang, Hua. “Head losses resulting from flow through wyes and manifolds.” 1967. Masters Thesis, University of British Columbia. Accessed March 05, 2021. http://hdl.handle.net/2429/36476.

MLA Handbook (7^th Edition):

Wang, Hua. “Head losses resulting from flow through wyes and manifolds.” 1967. Web. 05 Mar 2021.

Vancouver:

Wang H. Head losses resulting from flow through wyes and manifolds. [Internet] [Masters thesis]. University of British Columbia; 1967. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2429/36476.

Council of Science Editors:

Wang H. Head losses resulting from flow through wyes and manifolds. [Masters Thesis]. University of British Columbia; 1967. Available from: http://hdl.handle.net/2429/36476

Universiteit Utrecht

11. Block, M. de. An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland.

Degree: 2013, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/273642

► Since traditional methods for estimating the hydraulic properties of reservoir rocks, such as laboratory analysis of core samples and pumping tests, are time-consuming, invasive and… (more)

▼ Since traditional methods for estimating the hydraulic properties of reservoir rocks, such as laboratory analysis of core samples and pumping tests, are time-consuming, invasive and expensive, a method for the reliable estimation of reservoir rock properties from surface measurements would be beneficial. In this thesis an alternative method is introduced for the estimation of the porosity and the permeability of a (potential) geothermal reservoir. In this method, the electrical resistivity of the reservoir rock is determined based on magnetotelluric (MT) data. Then, petrophysical relations (i.e. Archie’s first law and the RGPZ model) are used in to derive values for the porosity and the permeability from the resistivity values predicted by the MT models. A case study is carried out of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland, utilizing this alternative approach. For this purpose, wireline logging data and core sample data from three boreholes are utilized in conjunction with MT data from five sites located close to the boreholes. The results are used to advance the assessment of the geothermal energy potential of the Sherwood Sandstone Group. The wireline logging data are evaluated and modeled using Interactive Petrophysics software and a porosity-permeability relationship is derived from core sample measurements. The results are used to determine average values for the resistivity, porosity and permeability of the upper part of the Sherwood Sandstone Group. The MT data are analyzed and processed, before being used for extensive 1D resistivity modeling. For this, three different inversion codes are used: Occam, the WinGLink sharp boundary code and Minim. The Minim models are used to determine the resistivity of the upper part of the Sherwood Sandstone Group. From the resistivity values the porosity and permeability are derived using Archie’s first law and the RGPZ model respectively. The values of the parameters of Archie’s first law and the RGPZ model are defined based on wireline logging data and core sample data from the boreholes. Comparing the results of the MT and petrophysical modeling, it is concluded that accurate estimates of the porosity and the permeability can be obtained using the method introduced here, provided that the resistivity determined based on the MT models does not deviate from the actual average resistivity of the target formation by more than 1 m. Additional geological data are essential for calibration of Archie’s first law and the RGPZ model. Therefore, this method is best utilized in combination with additional geological data from a reference site, allowing calibration of the petrophysical models. After calibration the petrophysical models can be applied to the entire MT survey area. From the borehole data analysis porosity and permeability values for the upper part of the Sherwood Sandstone Group are obtained, with the porosity varying between 18 and 21 % and the permeability varyingbetween 83 and 723 mD. These values indicate a good to excellent… Advisors/Committee Members: Peach, Colin.

Subjects/Keywords: Geowetenschappen; magnetotelluric, porosity, permeability, geothermal, reservoir, Sherwood, Lough Neagh, Archie, RGPZ, wireline, hydraulic properties, surface measurements, interactive petrophysics, method

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APA (6^th Edition):

Block, M. d. (2013). An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/273642

Chicago Manual of Style (16^th Edition):

Block, M de. “An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland.” 2013. Masters Thesis, Universiteit Utrecht. Accessed March 05, 2021. http://dspace.library.uu.nl:8080/handle/1874/273642.

MLA Handbook (7^th Edition):

Block, M de. “An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland.” 2013. Web. 05 Mar 2021.

Vancouver:

Block Md. An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland. [Internet] [Masters thesis]. Universiteit Utrecht; 2013. [cited 2021 Mar 05]. Available from: http://dspace.library.uu.nl:8080/handle/1874/273642.

Council of Science Editors:

Block Md. An alternative method for estimating the porosity and the permeability of (potential) geothermal reservoirs using magnetotelluric data; A case study of the Sherwood Sandstone Group in the Lough Neagh Basin, Northern Ireland. [Masters Thesis]. Universiteit Utrecht; 2013. Available from: http://dspace.library.uu.nl:8080/handle/1874/273642

Texas A&M University

12. Aderibigbe, Aderonke Abiodun. Application of Petrophysical and Geophysical Analysis in Improvement of Completions Design in Organic-Rich Mudrocks.

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

URL: http://hdl.handle.net/1969.1/157037

► In hydraulic fracturing stimulation treatments for organic-rich mudrocks, some issues that pose challenges in pre-completions design include selection of intervals for stimulation treatment, and selection… (more)

▼ In hydraulic fracturing stimulation treatments for organic-rich mudrocks, some issues that pose challenges in pre-completions design include selection of intervals for stimulation treatment, and selection of proppants for stimulation design. After the stimulation treatment, a key post-completions issue is the detection of the fracture and evaluation of the fracture performance. The application of petrophysical and geophysical analysis can offer potential solutions to these issues, thereby lead to improvements of both pre-completions and post-completions design of the hydraulic fracturing treatment. The objectives of this dissertation are (a) to introduce a rock classification workflow, which integrates geologic, petrophysical and geomechanical analysis, for the determination of zones for fracture stimulation treatments, (b) to develop a new technique for characterization of mechanical damage in proppant packs to improve the selection of proppants for stimulation treatment, and (c) to investigate the use of nanoparticles as contrast agents that enhances magnetic susceptibility measurements for the detection of hydraulic fractures after stimulation treatments. I first demonstrated that the integrated rock classification workflow, which includes geologic attributes of the formation, in-situ stress assessment capturing the effects of anisotropy in organic-rich mudrocks, and also takes into account anisotropic poroelastic coefficients, can improve the selection strategy for completion zones. Next, I introduced the application of the Hertz-Mindlin granular contact model to approximate the effective elastic properties of proppant packs. I used the calibration parameters of the Hertz-Mindlin model to develop correlations for the prediction of weight percentage of crushed proppants. Finally, from laboratory investigations, I demonstrated that superparamagnetic nanoparticles when mixed with proppants enhance the reliability of detecting fractures using magnetic susceptibility measurements. I also presented the sensitivity of the magnetic susceptibility measurements to the composition of proppants, concentration of nanoparticles, and the width of the induced fractures. The outcomes of this dissertation demonstrate significant contribution of petrophysical and geophysical analysis in achieving better fracture performance from completions design. Better fracture performance can be achieved by improving the strategies for identifying prolific zones for fracture initiation and propagation, achieving good fracture conductivity from the selection of proppants, and analyzing post-fracture performance of hydraulic fracturing treatments. These improvements could in turn result in improved rates and recoveries from organic-rich mudrock formations. Advisors/Committee Members: Heidari, Zoya (advisor), Killough, John (committee member), Lane, Robert H (committee member), Sun, Yuefeng (committee member).

Subjects/Keywords: Well logs interpretation; Petrophysics; Geomechanics; Hydraulic fracturing; Completions design; Proppant; Mechanical damage; Acoustic measurements; Nanoparticles; Magnetic susceptibility; Fracture detection

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APA (6^th Edition):

Aderibigbe, A. A. (2016). Application of Petrophysical and Geophysical Analysis in Improvement of Completions Design in Organic-Rich Mudrocks. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/157037

Chicago Manual of Style (16^th Edition):

Aderibigbe, Aderonke Abiodun. “Application of Petrophysical and Geophysical Analysis in Improvement of Completions Design in Organic-Rich Mudrocks.” 2016. Doctoral Dissertation, Texas A&M University. Accessed March 05, 2021. http://hdl.handle.net/1969.1/157037.

MLA Handbook (7^th Edition):

Aderibigbe, Aderonke Abiodun. “Application of Petrophysical and Geophysical Analysis in Improvement of Completions Design in Organic-Rich Mudrocks.” 2016. Web. 05 Mar 2021.

Vancouver:

Aderibigbe AA. Application of Petrophysical and Geophysical Analysis in Improvement of Completions Design in Organic-Rich Mudrocks. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1969.1/157037.

Council of Science Editors:

Aderibigbe AA. Application of Petrophysical and Geophysical Analysis in Improvement of Completions Design in Organic-Rich Mudrocks. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/157037

Colorado School of Mines

13. McCullagh, Christopher Lawrence. Applications of temperature modeling and distributed temperature sensing (DTS) in hydraulic fracture stimulation diagnostics.

Degree: MS(M.S.), Petroleum Engineering, 2014, Colorado School of Mines

URL: http://hdl.handle.net/11124/427

► In unconventional oil and gas wells, the key to economic production is the success of the hydraulic fracture stimulation. Determining the effectiveness of the stimulation… (more)

▼ In unconventional oil and gas wells, the key to economic production is the success of the hydraulic fracture stimulation. Determining the effectiveness of the stimulation is often difficult. New technologies can characterize the hydraulic fractures produced from the stimulation. Among these is distributed temperature sensing (DTS). DTS allows for continuous temperature measurements along the wellbore, and through the use of temperature modeling, DTS may be used to diagnose the effectiveness of hydraulic fracture stimulations both during the treatment (real-time) and after the well has been shut in (warm-back). In this study temperature models were used to simulate the wellbore temperature change both during the hydraulic fracture stimulation treatment and after the treatment has been completed. During the treatment, DTS and temperature modeling allows for the tracking of fluid throughout the wellbore. This may be used to determine which perforated zones receive the most stimulation fluid and can also dictate how and where fluid leaves the wellbore. Published temperature models were used to simulate wellbore temperature changes in Eagle Ford study wells. The published models were coded using VBA in order to create a numerical simulation. The numerical model was compared to simplified analytical solutions and an ideal time step and grid size were determined. Several cases were tested using different fluid distributions across the perforated zones. In lieu of DTS data, microseismic was used to assist in setting the parameters of the temperature simulation. Due to high pump rates, small perforated zones, and close perforation spacing, real-time evaluation of hydraulic fracture stimulation treatments in the Eagle Ford study wells resulted in ambiguous results. As a result, a different type of temperature model was derived and implemented in the study, the warm-back temperature model. The derivation of the warm-back model is similar to that of the real-time model but is much simpler and uses different boundary conditions. Like the real-time model, the purpose of the warm-back model is to determine fluid placement along the wellbore into the perforated zones. In this study fluid placement was used to directly determine fracture length. The benefit of the warm-back model is that it is not directly a function of pump rates or completions. As a result, the warm-back model allows for greater understanding of the hydraulic fractures than the real-time model. Microseismic was again used to adjust parameters affecting the temperature simulation. Advisors/Committee Members: Tutuncu, Azra (advisor), Eustes, Alfred William (committee member), Hoffman, B. Todd (committee member), Sonnenberg, Stephen A. (committee member), Davis, Thomas L. (Thomas Leonard), 1947- (committee member).

Subjects/Keywords: DTS; distributed temperature sensing; temperature modeling; Hydraulic fracturing; Temperature measurements – Mathematical models; Optoelectronic devices; Heat – Transmission

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APA (6^th Edition):

McCullagh, C. L. (2014). Applications of temperature modeling and distributed temperature sensing (DTS) in hydraulic fracture stimulation diagnostics. (Masters Thesis). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/427

Chicago Manual of Style (16^th Edition):

McCullagh, Christopher Lawrence. “Applications of temperature modeling and distributed temperature sensing (DTS) in hydraulic fracture stimulation diagnostics.” 2014. Masters Thesis, Colorado School of Mines. Accessed March 05, 2021. http://hdl.handle.net/11124/427.

MLA Handbook (7^th Edition):

McCullagh, Christopher Lawrence. “Applications of temperature modeling and distributed temperature sensing (DTS) in hydraulic fracture stimulation diagnostics.” 2014. Web. 05 Mar 2021.

Vancouver:

McCullagh CL. Applications of temperature modeling and distributed temperature sensing (DTS) in hydraulic fracture stimulation diagnostics. [Internet] [Masters thesis]. Colorado School of Mines; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11124/427.

Council of Science Editors:

McCullagh CL. Applications of temperature modeling and distributed temperature sensing (DTS) in hydraulic fracture stimulation diagnostics. [Masters Thesis]. Colorado School of Mines; 2014. Available from: http://hdl.handle.net/11124/427

University of Hong Kong

14. Lui, Ping-hon. Dispersion prediction in open channel flows.

Degree: 1982, University of Hong Kong

URL: http://hdl.handle.net/10722/32840

Subjects/Keywords: Stream measurements.; Water - Pollution.; Channels (Hydraulic engineering)

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

APA (6^th Edition):

Lui, P. (1982). Dispersion prediction in open channel flows. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/32840

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):

Lui, Ping-hon. “Dispersion prediction in open channel flows.” 1982. Thesis, University of Hong Kong. Accessed March 05, 2021. http://hdl.handle.net/10722/32840.

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

MLA Handbook (7^th Edition):

Lui, Ping-hon. “Dispersion prediction in open channel flows.” 1982. Web. 05 Mar 2021.

Vancouver:

Lui P. Dispersion prediction in open channel flows. [Internet] [Thesis]. University of Hong Kong; 1982. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10722/32840.

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

Council of Science Editors:

Lui P. Dispersion prediction in open channel flows. [Thesis]. University of Hong Kong; 1982. Available from: http://hdl.handle.net/10722/32840

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

University of Georgia

15. Bruns, Alan Craig. Investigation of ground water level fluctuations at the Savannah River Site.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/20066

► A primary concern at many waste sites is the ability to correctly predict the migration pathways of contaminants. We wish to determine the conditions that… (more)

Subjects/Keywords: Barometric Efficiencies; Barometric Pressure; Contaminant Trajectories; Hydraulic Gradient; Migration Pathways; Prediction Error; Total Head; Water Level Measurements

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APA (6^th Edition):

Bruns, A. C. (2014). Investigation of ground water level fluctuations at the Savannah River Site. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/20066

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):

Bruns, Alan Craig. “Investigation of ground water level fluctuations at the Savannah River Site.” 2014. Thesis, University of Georgia. Accessed March 05, 2021. http://hdl.handle.net/10724/20066.

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

MLA Handbook (7^th Edition):

Bruns, Alan Craig. “Investigation of ground water level fluctuations at the Savannah River Site.” 2014. Web. 05 Mar 2021.

Vancouver:

Bruns AC. Investigation of ground water level fluctuations at the Savannah River Site. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10724/20066.

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

Council of Science Editors:

Bruns AC. Investigation of ground water level fluctuations at the Savannah River Site. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/20066

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

Michigan State University

16. Foster, Matthew G. A quantitative study of primary flow fields within an automotive torque converter using laster doppler velocimetry.

Degree: MS, Department of Mechanical Engineering, 1998, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:26946

Subjects/Keywords: Hydraulic torque converters; Fluid dynamic measurements; Streamflow velocity – Measurement

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APA (6^th Edition):

Foster, M. G. (1998). A quantitative study of primary flow fields within an automotive torque converter using laster doppler velocimetry. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:26946

Chicago Manual of Style (16^th Edition):

Foster, Matthew G. “A quantitative study of primary flow fields within an automotive torque converter using laster doppler velocimetry.” 1998. Masters Thesis, Michigan State University. Accessed March 05, 2021. http://etd.lib.msu.edu/islandora/object/etd:26946.

MLA Handbook (7^th Edition):

Foster, Matthew G. “A quantitative study of primary flow fields within an automotive torque converter using laster doppler velocimetry.” 1998. Web. 05 Mar 2021.

Vancouver:

Foster MG. A quantitative study of primary flow fields within an automotive torque converter using laster doppler velocimetry. [Internet] [Masters thesis]. Michigan State University; 1998. [cited 2021 Mar 05]. Available from: http://etd.lib.msu.edu/islandora/object/etd:26946.

Council of Science Editors:

Foster MG. A quantitative study of primary flow fields within an automotive torque converter using laster doppler velocimetry. [Masters Thesis]. Michigan State University; 1998. Available from: http://etd.lib.msu.edu/islandora/object/etd:26946

Rutgers University

17. Fernandez, Victoria Julia. Water quality design storms for stormwater hydrodynamic separators.

Degree: MS, Civil and Environmental Engineering, 2008, Rutgers University

URL: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17305

► Stormwater runoff has become an important source of non-point pollution for surface waters. Management practices such as the installation of hydrodynamic separators are implemented in… (more)

▼ Stormwater runoff has become an important source of non-point pollution for surface waters. Management practices such as the installation of hydrodynamic separators are implemented in order to treat the stormwater runoff. In New Jersey, the efficiency of these devices is verified and certified by NJCAT and NJDEP, respectively. When the measure of the device performance is based on laboratory data, NJCAT calculates the average annual removal efficiency using weighting factors. The weighting factors were developed by NJDEP based on the average annual distribution of runoff volumes and the assumed similarity with the distribution of runoff peak flow rates. In this study, 10 years of precipitation records were used to evaluate the frequency distributions of the runoff volumes as well as the runoff peak flow rates. USEPA's SWMM model was used to simulate the runoff events produced by the given precipitation events. From the model results, three sets of weighting factors were determined. The first was based on the runoff volume frequency distribution expressed as percentage of the volume produced by the water quality design storm (uniform or non-uniform). The second was based on the runoff peak flow rates frequency distribution expressed as percentage of the peak flow rate generated by the uniformly distributed water quality design storm. The third was also based on the runoff peak flow rates frequency distribution, but expressed as percentage of the peak flow generated by the non-uniformly distributed water quality design storm. The results indicate that the weighting factors, based on the peak runoff rates generated from the uniform design storm, are the closest to the NJDEP weighting factors. The impact of two different water quality design storms, uniform vs. non-uniform distribution, on the sizing of a certified hydrodynamic separator was also evaluated. One sets the design flow rate of the device equal to the peak flow rate generated by the uniform design storm. The other sets the design flow rate of the device equal to the peak flow rate generated by the non-uniform design storm. USEPA's SWMM model was used to continuously simulate solids loading to the treatment device. The lab-measured relationship between flow rate and removal efficiency was used to specify the removal rate of solids within the storm event. The results indicate that sizing with the uniform design storm would achieve a removal efficiency close to the one verified but that sizing with the non-uniform storm would achieve a removal efficiency significantly higher than the one verified. It is concluded that setting design flow rate equal to the peak flow rate generated by the uniform water quality design storm is more consistent with use of the existing weight factors in calculating the average annual solids removal efficiency. Use of the non-uniform water quality design storm is too conservative. Advisors/Committee Members: Fernandez, Victoria Julia (author), Guo, Qizhong (chair), Medlar, Steven (internal member), Yook-Kong, Yong (internal member).

Subjects/Keywords: Water quality management; Storm sewers; Hydraulic measurements; Separators (Machines)

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APA (6^th Edition):

Fernandez, V. J. (2008). Water quality design storms for stormwater hydrodynamic separators. (Masters Thesis). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17305

Chicago Manual of Style (16^th Edition):

Fernandez, Victoria Julia. “Water quality design storms for stormwater hydrodynamic separators.” 2008. Masters Thesis, Rutgers University. Accessed March 05, 2021. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17305.

MLA Handbook (7^th Edition):

Fernandez, Victoria Julia. “Water quality design storms for stormwater hydrodynamic separators.” 2008. Web. 05 Mar 2021.

Vancouver:

Fernandez VJ. Water quality design storms for stormwater hydrodynamic separators. [Internet] [Masters thesis]. Rutgers University; 2008. [cited 2021 Mar 05]. Available from: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17305.

Council of Science Editors:

Fernandez VJ. Water quality design storms for stormwater hydrodynamic separators. [Masters Thesis]. Rutgers University; 2008. Available from: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17305

Virginia Tech

18. Smoot, James Lloyd. An examination of stream reaeration coefficients and hydraulic conditions in a pool-and-riffle stream.

Degree: PhD, Civil Engineering, 1988, Virginia Tech

URL: http://hdl.handle.net/10919/77845

► Oxygen transfer between flowing surface waters and the atmosphere can be mathematically described as a first-order reaction and is known as stream reaeration. The first-order… (more)

▼ Oxygen transfer between flowing surface waters and the atmosphere can be mathematically described as a first-order reaction and is known as stream reaeration. The first-order rate coefficient or stream reaeration coefficient is a necessary input parameter to stream water-quality models and is partially controlled by the hydraulic conditions of the stream. These coefficients may vary for a given stream reach because of varying hydraulic characteristics brought about by streamflow changes. Hydraulic measurements and reaeration coefficient determinations were made on four pool-and-riffle reaches of Middle Fork Beargrass Creek near Louisville, Kentucky using the hydrocarbon gas tracer technique. Measurements were made on each reach for up to seven streamflow conditions ranging from extremely low to medium. Contrary to published findings applicable to reaches not characterized by a series of pools and riffles, the reaeration coefficient was shown to increase with increasing streamflow for all four reaches studied. Therefore, stream water-quality models developed for these, or similar, stream reaches using reaeration coefficients determined at normal streamflow conditions may over estimate the influence of atmospheric reaeration under a much lower flow condition, such as extreme low flow – the selected critical condition for which water-quality models are commonly developed. Twenty-five published equations used for estimating stream reaeration coefficients were evaluated using the measured hydraulic and reaeration data and were shown to generate highly variable and generally inaccurate predictions. Over half of the equations generated mean prediction errors of more than 50 percent. The best equation overall generated a mean prediction error of 15 percent. The equations were also shown to be highly sensitive to the methods used for determining the input parameter values. Four equations were statistically developed from the data collected in this research. Two of the equations provided more accurate estimates for the four studied reaches than any of the 25 published equations. Mean prediction errors for the two were 1.2 and 9.2 percent. For verification, the developed equations were also evaluated against the 25 published equations using published reaeration and hydraulic data from 39 hydrocarbon gas tracer measurements on other streams. The two developed equations which were most accurate for the four study reaches were also determined to be superior to all of the 25 published equations using the verification data. Mean prediction errors for the two equations using the verification data were 2.3 and 5.5 percent.

Subjects/Keywords: LD5655.V856 1988.S677; Stream measurements; Hydraulic measurements; Rivers – Aeration

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APA (6^th Edition):

Smoot, J. L. (1988). An examination of stream reaeration coefficients and hydraulic conditions in a pool-and-riffle stream. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/77845

Chicago Manual of Style (16^th Edition):

Smoot, James Lloyd. “An examination of stream reaeration coefficients and hydraulic conditions in a pool-and-riffle stream.” 1988. Doctoral Dissertation, Virginia Tech. Accessed March 05, 2021. http://hdl.handle.net/10919/77845.

MLA Handbook (7^th Edition):

Smoot, James Lloyd. “An examination of stream reaeration coefficients and hydraulic conditions in a pool-and-riffle stream.” 1988. Web. 05 Mar 2021.

Vancouver:

Smoot JL. An examination of stream reaeration coefficients and hydraulic conditions in a pool-and-riffle stream. [Internet] [Doctoral dissertation]. Virginia Tech; 1988. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10919/77845.

Council of Science Editors:

Smoot JL. An examination of stream reaeration coefficients and hydraulic conditions in a pool-and-riffle stream. [Doctoral Dissertation]. Virginia Tech; 1988. Available from: http://hdl.handle.net/10919/77845

Texas A&M University

19. Hill, James Robert. Experiments with a nonstaggered, implicit, finite-difference operator for the two-dimensional free surface flow equations.

Degree: MS, ocean engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-H646

Subjects/Keywords: ocean engineering.; Major ocean engineering.; Hydraulics - Mathematical models.; Hydrology - Mathematical models.; Hydraulic models.; Hydraulic measurements.; Hydraulic engineering - Mathematical models.

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

APA (6^th Edition):

Hill, J. R. (2012). Experiments with a nonstaggered, implicit, finite-difference operator for the two-dimensional free surface flow equations. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-H646

Chicago Manual of Style (16^th Edition):

Hill, James Robert. “Experiments with a nonstaggered, implicit, finite-difference operator for the two-dimensional free surface flow equations.” 2012. Masters Thesis, Texas A&M University. Accessed March 05, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-H646.

MLA Handbook (7^th Edition):

Hill, James Robert. “Experiments with a nonstaggered, implicit, finite-difference operator for the two-dimensional free surface flow equations.” 2012. Web. 05 Mar 2021.

Vancouver:

Hill JR. Experiments with a nonstaggered, implicit, finite-difference operator for the two-dimensional free surface flow equations. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-H646.

Council of Science Editors:

Hill JR. Experiments with a nonstaggered, implicit, finite-difference operator for the two-dimensional free surface flow equations. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-H646

20. Mousmoulis, Georgios. Development of cavitation detection methodology for hydraulic turbomachines using experimental and numerical tools.

Degree: 2020, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)

URL: http://hdl.handle.net/10442/hedi/47838

► Centrifugal pumps constitute one of the most common and essential component in most industrial procedures and other technical works and applications, while hydraulic turbines operate… (more)

▼ Centrifugal pumps constitute one of the most common and essential component in most industrial procedures and other technical works and applications, while hydraulic turbines operate in numerous hydroelectric power plants worldwide, producing a substantial percentage of the consumed electricity. Consequently, the reliable and efficient operation of these machines is highly required. An important hydraulic excitation mechanism that may affect the steady and dynamic operation of a hydraulic turbomachinery is cavitation, which may be created in the low static pressure zone of the rotor. The re-liquification of the vapour bubbles at downstream positions is a very violent implosion procedure that generates shock pressure waves of extreme local intensity, which can cause extended wear of the solid surfaces of the machine. Long-term operation of a machine under cavitating conditions results in significant material removal, accompanied by strong vibrations and drop of performance. The present Thesis deals with the analysis of the flow conditions in centrifugal pumps that suffer from cavitation, and aims at the development of detection tools capable of identifying the presence of vapour formations promptly. The present work attempts to approach the problem both experimentally and computationally. Two testing configurations that allow the flow visualisation of the phenomenon are developed; one at the Engineering Department of Lancaster University (LU) and one at the Laboratory of Hydraulic Turbomachines of the NTUA. In both test rigs, the regulation of the pump suction conditions (static pressure) is achieved by throttling the suction valve. The pump installed at the LU has its volute made from transparent material and uses three semi-open, radial impellers; i) one with six backward-curved blades and six splitter blades, ii) one with twelve radial blades, and iii) one with twelve forward-curved blades. On the other hand, the test configuration of the NTUA incorporates an industrial centrifugal pump with a closed impeller that has five backward-curved blades. Significant modifications are made to this pump in order to allow the visualizaton of the flow in its impeller. More specifically, the impeller is re-manufactured from scratch, with the shroud made of transparent material, while a transparent window is opened in the front casing of the pump. Performance experiments are conducted for all four impellers and they are accompanied by noise and vibration measurements, as well as flow visualizaition observations. Two accelerometers and one acoustic emission sensor are used in each test rig, and their time-series measurements are processed so as to extract cavitation characteristics and develop a detection tool of general application. The signals obtained are processed in the time and frequency domain, with the application of statistical, Root Mean Square and Power Spectral Density tools. Moreover, the Spectral Kurtosis methodology for the construction of band pass filters that unmask cavitation characteristics in the measured…

Subjects/Keywords: Υδροδυναμικές μηχανές; Σπηλαίωση; Διαγνωστική βλαβών; Πειραματικές μετρήσεις; Μετρήσεις ταλάντωσης; Μετρήσεις θορύβου; Φασματική κύρτωση; Υπολογιστική ρευστοδυναμική; Hydraulic turbomachinery; Cavitation; Rotating machine diagnostics; Experimental measurements; Vibration measurements; Acoustic emission measurements; Spectral kurtosis; Computational fluid dynamics

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APA (6^th Edition):

Mousmoulis, G. (2020). Development of cavitation detection methodology for hydraulic turbomachines using experimental and numerical tools. (Thesis). National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Retrieved from http://hdl.handle.net/10442/hedi/47838

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):

Mousmoulis, Georgios. “Development of cavitation detection methodology for hydraulic turbomachines using experimental and numerical tools.” 2020. Thesis, National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ). Accessed March 05, 2021. http://hdl.handle.net/10442/hedi/47838.

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

MLA Handbook (7^th Edition):

Mousmoulis, Georgios. “Development of cavitation detection methodology for hydraulic turbomachines using experimental and numerical tools.” 2020. Web. 05 Mar 2021.

Vancouver:

Mousmoulis G. Development of cavitation detection methodology for hydraulic turbomachines using experimental and numerical tools. [Internet] [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2020. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10442/hedi/47838.

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

Council of Science Editors:

Mousmoulis G. Development of cavitation detection methodology for hydraulic turbomachines using experimental and numerical tools. [Thesis]. National Technical University of Athens (NTUA); Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ); 2020. Available from: http://hdl.handle.net/10442/hedi/47838

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

Michigan State University

21. Nguyen, Tuan Duc. Circulation and exchange in the Saginaw Bay-Lake Huron system : observations and numerical modeling.

Degree: 2014, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:2821

►

Thesis Ph. D. Michigan State University. Civil Engineering 2014.

Knowledge of lake circulation is essential for addressing many issues ranging from water quality to human… (more)

▼

Thesis Ph. D. Michigan State University. Civil Engineering 2014.

Knowledge of lake circulation is essential for addressing many issues ranging from water quality to human and ecosystem health. Lake Huron, the third largest of the Great Lakes by volume, has been significantly affected by natural and anthropogenic activities. Since Lake Huron is a connecting waterway between the upper and lower Great Lakes, understanding Lake Huron circulation and thermal structure is also important for questions involving the lower lakes. In this study, we use a three-dimensional, unstructured grid hydrodynamic model to examine circulation, thermal structure, ice cover extent, and exchange in the Saginaw Bay - Lake Huron system during summer months for 3 consecutive years (2009-2011) and winter months for 2 years (2010 and 2013). The model was tested against ADCP observations of currents, data from a Lagrangian drifter experiment in the Saginaw Bay, observations of temperature from thermistor chains, and temperature data from the National Data Buoy Center stations. Mean circulation was predominantly cyclonic in the main basin of Lake Huron with current speeds in the surface layer being highest in August in summer and in January in winter. Circulation in the Saginaw Bay was characterized by the presence of an anti-cyclonic gyre at the mouth of the outer bay and two recirculating cells within the inner bay for both seasons. The ice cover data extracted from Moderate Resolution Imaging Spectroradiometer (MODIS) with relatively high spatial resolution and from the Great Lakes Ice Atlas were used to test against results obtained from an ice model. The results show that the ice model was able to simulate lake circulation and ice cover extent in winter season reasonably well. The percent coverage of ice reached a maximum of 38.3% and 38.7% in mid-February in 2010 and beginning of March in 2013 respectively. New estimates are provided for the mean flushing times (computed as the volume of the bay divided by the rate of inflow) and residence times (computed as e-folding flushing times treating the bay as a continuously stirred tank reactor) for Saginaw Bay for summer and winter seasons. The average flushing time (over the three months of summer and for all three years) was 23.0 days for the inner bay and 9.9 days for the entire bay. The corresponding values for the winter season are 43.2 days and 15.6 days respectively. The mean e-folding flushing time was 62 days for summer and 64.7 days for winter for the inner bay and 115 days for the summer and 114.2 days for the winter conditions for the entire bay. Empirical relations between the mean residence time and river discharge were proposed. To characterize the behavior of river plumes in the inner Saginaw Bay, the absolute diffusivity values in the along-shore and cross-shore directions were calculated using data from GPS-enabled Lagrangian drifters and simulation results based on particle transport models.

Description based on online resource;

Advisors/Committee Members: Phanikumar, Mantha S, Wallace, Roger B, Li, Shu-Guang, Jaberi, Farhad.

Subjects/Keywords: Water currents – Huron, Lake (Mich. and Ont.) – Mathematical models; Water currents – Michigan – Saginaw Bay – Mathematical models; Ice on rivers, lakes, etc. – Huron, Lake (Mich. and Ont.) – Mathematical models; Ice on rivers, lakes, etc. – Michigan – Saginaw Bay – Mathematical models; Hydraulic measurements – Huron, Lake (Mich. and Ont.); Hydraulic measurements – Michigan – Saginaw Bay; Thermal diffusivity – Mathematical models; Plumes (Fluid dynamics) – Mathematical models; Lagrangian functions; Hydraulic measurements; Ice on rivers, lakes, etc. – Mathematical models; Civil engineering

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APA (6^th Edition):

Nguyen, T. D. (2014). Circulation and exchange in the Saginaw Bay-Lake Huron system : observations and numerical modeling. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:2821

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):

Nguyen, Tuan Duc. “Circulation and exchange in the Saginaw Bay-Lake Huron system : observations and numerical modeling.” 2014. Thesis, Michigan State University. Accessed March 05, 2021. http://etd.lib.msu.edu/islandora/object/etd:2821.

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

MLA Handbook (7^th Edition):

Nguyen, Tuan Duc. “Circulation and exchange in the Saginaw Bay-Lake Huron system : observations and numerical modeling.” 2014. Web. 05 Mar 2021.

Vancouver:

Nguyen TD. Circulation and exchange in the Saginaw Bay-Lake Huron system : observations and numerical modeling. [Internet] [Thesis]. Michigan State University; 2014. [cited 2021 Mar 05]. Available from: http://etd.lib.msu.edu/islandora/object/etd:2821.

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

Council of Science Editors:

Nguyen TD. Circulation and exchange in the Saginaw Bay-Lake Huron system : observations and numerical modeling. [Thesis]. Michigan State University; 2014. Available from: http://etd.lib.msu.edu/islandora/object/etd:2821

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

22. Gomes, Maria Carolina Villaça. Análise da influência da condutividade hidráulica saturada dos solos nos escorregamentos rasos na bacia do rio Guaxinduba (SP).

Degree: Mestrado, Geografia Física, 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/8/8135/tde-09112012-123744/ ;

►

A previsão de áreas suscetíveis a escorregamentos translacionais rasos tem como fundamental etapa a investigação dos fatores condicionantes e dos mecanismos de ruptura. Algumas destas… (more)

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A previsão de áreas suscetíveis a escorregamentos translacionais rasos tem como fundamental etapa a investigação dos fatores condicionantes e dos mecanismos de ruptura. Algumas destas propriedades, como os parâmetros físicos e hidrológicos dos solos, são determinantes para a instabilização de encostas que estão sujeitas a eventos pluviométricos intensos. Uma destas propriedades é a condutividade hidráulica saturada, cujo comportamento pode influenciar no desenvolvimento de poro-pressão positiva ou levar à perda de sucção dos solos, ocasionando rupturas. Desta forma, o objetivo principal desta pesquisa foi analisar a distribuição lateral e vertical da condutividade hidráulica saturada (Ksat) dos solos e sua influência nos escorregamentos translacionais rasos na Serra do Mar (SP). Para tanto, foi selecionada uma bacia representativa da Serra do Mar e nela foram escolhidas três cicatrizes acessíveis e com limites bem preservados para a realização dos ensaios in situ. As profundidades onde foram realizados os ensaios foram definidas a partir da caracterização morfológica dos mantos de alteração nas trincheiras abertas no topo, no centro e na lateral das cicatrizes (0.25, 0.50, 1.00, 1.50, 2.00 e 2.50 m). Finamente, foram realizados os ensaios in situ utilizando-se o Permeâmetro de Guelph, utilizando-se duas cargas hidráulicas H para a que fosse possível calcular a Ksat empregando-se as equações de Richards, Laplace e a análise de Elricket al. (1989), embora tenha sido utilizada esta última para a análise da variação dos valores. A partir dos valores de Ksat, das propriedades físicas dos materiais (distribuição granulométrica, micro e macroporosidade, porosidade total. Além disso, foi analisada a tendência de variação entre 10-4 e 10-7 m/s, predominando da Ksat com a profundidade. Foram obtidos 41 valores de Ksat, os quais variaram entre as ordens de grandeza 10-5 e 10-6 m/s (82,5% dos valores), que mostraram a pequena variabilidade da Ksat nos perfis de alteração investigados, se comparada às diferenças observadas nas propriedades dos solos e corroboram com os trabalhos desenvolvidos na Serra do Mar. Quando confrontado com as propriedades físicas dos materiais (por exemplo, granulometria e porosidade total), observou-se, principalmente, a correlação positiva com a fração areia. De forma geral, foi possível identificar uma tendência de aumento da Ksat com a profundidade, assim como a existência de algumas descontinuidades hidráulicas significativas, tanto de redução quanto de aumento brusco da Ksat em uma pequena profundidade.

The prediction of landslides-prone areas has as fundamental step researching controlling factors and failure mechanisms. Some of these properties, such as the physical and hydrological soil properties are crucial to the instability of slopes subject to intense rainfall events. One of these properties is the saturated hydraulic conductivity, whose behavior can influence and lead to the development of positive pore-pressure or the loss of soil suction, causing failures. The main objective of this…

Advisors/Committee Members: Vieira, Bianca Carvalho.

Subjects/Keywords: Condutividade hidráulica saturada; Ensaios in situ; Escorregamentos translacionais rasos; In situ measurements; Saturated hydraulic conductivity; Serra do Mar; Serra do Mar escarpment; Shallow landslides

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APA (6^th Edition):

Gomes, M. C. V. (2012). Análise da influência da condutividade hidráulica saturada dos solos nos escorregamentos rasos na bacia do rio Guaxinduba (SP). (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/8/8135/tde-09112012-123744/ ;

Chicago Manual of Style (16^th Edition):

Gomes, Maria Carolina Villaça. “Análise da influência da condutividade hidráulica saturada dos solos nos escorregamentos rasos na bacia do rio Guaxinduba (SP).” 2012. Masters Thesis, University of São Paulo. Accessed March 05, 2021. http://www.teses.usp.br/teses/disponiveis/8/8135/tde-09112012-123744/ ;.

MLA Handbook (7^th Edition):

Gomes, Maria Carolina Villaça. “Análise da influência da condutividade hidráulica saturada dos solos nos escorregamentos rasos na bacia do rio Guaxinduba (SP).” 2012. Web. 05 Mar 2021.

Vancouver:

Gomes MCV. Análise da influência da condutividade hidráulica saturada dos solos nos escorregamentos rasos na bacia do rio Guaxinduba (SP). [Internet] [Masters thesis]. University of São Paulo; 2012. [cited 2021 Mar 05]. Available from: http://www.teses.usp.br/teses/disponiveis/8/8135/tde-09112012-123744/ ;.

Council of Science Editors:

Gomes MCV. Análise da influência da condutividade hidráulica saturada dos solos nos escorregamentos rasos na bacia do rio Guaxinduba (SP). [Masters Thesis]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/8/8135/tde-09112012-123744/ ;

University of Texas – Austin

23. Bean, Jeffrey Kevin. Interactions of nitric oxides, organic compounds, and particulate matter and their effects on air quality.

Degree: PhD, Chemical engineering, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/41603

► New concerns over health effects and tightening EPA regulations are pushing policy-makers towards lower and lower levels of pollutants. In many places in the United… (more)

▼ New concerns over health effects and tightening EPA regulations are pushing policy-makers towards lower and lower levels of pollutants. In many places in the United States the EPA standards for ozone and particulate matter (PM) are difficult to meet. This concern is elevated as both standards have been tightened in recent years. Improvements to air quality are costly, and policy-makers rely on regional photo-chemical models to find the most effective methods of pollutant reduction. The accuracy of forecasted predictions of ozone and PM depends heavily on the interactions of NOx and organic compounds. An understanding of the interactions of NOx, organic compounds, and PM is necessary in three important and ongoing research areas: 1 – organic nitrate partitioning and hydrolysis, 2 – interactions between biogenic organic compounds with anthropogenic oxidants, and 3 – atmospheric impacts of hydraulic fracturing. Through environmental chamber experiments and chemical reaction modeling I quantified the gas-particle partitioning of organic nitrates as well as the hydrolysis rate of condensed organic nitrates. These interactions are important in understanding total PM levels as well as NOx recycling – the breakdown of organic nitrates to regenerate NOx that was previously removed from ozone production, which in turn is necessary for accurate forecasting of ozone levels. I collected ambient measurements near Houston, TX in September 2013 as part of DISCOVER-AQ (http://www.nasa.gov/mission_pages/discover-aq/index.html). These measurements provide valuable insight to the processes that leads to PM formation in the area. There is evidence that the interaction between biogenic organic compounds and anthropogenic oxidants has an important effect on PM levels. A diurnal cycle of increased nighttime PM concentrations suggests that reactions between terpenes and the nitrate radical significantly contribute to PM. A poorly characterized source of emissions from hydraulic fracturing activity are atmospherically vented storage tanks for flowback wastewater. Emissions of ammonia and hydrocarbons are observed as samples evaporate from 12 different wastewater samples from the Permian Basin. Through chamber experiments I tested the potential of these evaporated mixtures to produce PM in the presence of an atmospheric oxidizer, NOx and seed particles, and I observed significant formation of organic and ammonium nitrate PM. Advisors/Committee Members: Hildebrandt Ruiz, Lea (advisor), Allen, David (committee member), Corsi, Richard (committee member), McDonald-Buller, Elena (committee member), Sharma, Mukul (committee member).

Subjects/Keywords: Organic nitrate; Partitioning; Hydrolysis; Organic aerosol; Volatility basis set; Environmental chamber experiments; Ambient measurements; Diurnal variation; Positive matrix factorization; Hydraulic fracturing; Flowback wastewater

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APA (6^th Edition):

Bean, J. K. (2016). Interactions of nitric oxides, organic compounds, and particulate matter and their effects on air quality. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/41603

Chicago Manual of Style (16^th Edition):

Bean, Jeffrey Kevin. “Interactions of nitric oxides, organic compounds, and particulate matter and their effects on air quality.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed March 05, 2021. http://hdl.handle.net/2152/41603.

MLA Handbook (7^th Edition):

Bean, Jeffrey Kevin. “Interactions of nitric oxides, organic compounds, and particulate matter and their effects on air quality.” 2016. Web. 05 Mar 2021.

Vancouver:

Bean JK. Interactions of nitric oxides, organic compounds, and particulate matter and their effects on air quality. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2152/41603.

Council of Science Editors:

Bean JK. Interactions of nitric oxides, organic compounds, and particulate matter and their effects on air quality. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/41603

University of Oklahoma

24. Ross, Randall Royce. Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods.

Degree: PhD, School of Civil Engineering and Environmental Science, 1998, University of Oklahoma

URL: http://hdl.handle.net/11244/5741

► The use of physical and hydraulic containment systems for the isolation of contaminated ground water and aquifer materials associated with hazardous waste sites has increased… (more)

Subjects/Keywords: Hydraulic measurements.; Hydrology.; Engineering, Environmental.; Environmental Sciences.; Hazardous wastes Management.; Entropy (Information theory)

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APA (6^th Edition):

Ross, R. R. (1998). Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/5741

Chicago Manual of Style (16^th Edition):

Ross, Randall Royce. “Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods.” 1998. Doctoral Dissertation, University of Oklahoma. Accessed March 05, 2021. http://hdl.handle.net/11244/5741.

MLA Handbook (7^th Edition):

Ross, Randall Royce. “Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods.” 1998. Web. 05 Mar 2021.

Vancouver:

Ross RR. Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods. [Internet] [Doctoral dissertation]. University of Oklahoma; 1998. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11244/5741.

Council of Science Editors:

Ross RR. Determination of leakage from subsurface containment systems using informational entropy and hydraulic signature assessment methods. [Doctoral Dissertation]. University of Oklahoma; 1998. Available from: http://hdl.handle.net/11244/5741

Rutgers University

25. Li, Yunjie. Development of design basis for hydrodynamic vortex separators.

Degree: PhD, Civil and Environmental Engineering, 2009, Rutgers University

URL: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051044

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Though many prototypes of hydrodynamic separators have been developed to remove solids from wastewater and stormwater, to date, not much fundamental development on unit performance… (more)

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Though many prototypes of hydrodynamic separators have been developed to remove solids from wastewater and stormwater, to date, not much fundamental development on unit performance evaluation exists due to the complexity of the problem. Design specifications of commercial separators are derived from empirical or semi-empirical equations that are unique and proprietary to each manufacturer. In this research, experimental and theoretical investigations were conducted to examine the mechanisms of solid-liquid separation for a general vortex separator, thereby providing a fundamental approach for unit performance evaluation. The main achievements and findings obtained through the experimental investigation and theoretical study are as follows. Experimental investigation with four physical vortex models, three with varying inlet pipe elevations and one with a lower chamber height, reveal that the impact of a changing inlet pipe elevation on particle removal efficiency is insignificant; while the effect of a changing chamber height on removal efficiency is significant and measurable. In the theoretical development, three topics, namely, flow pattern, particle trajectory, and unit performance evaluation, were researched. Based on the Rankine combined vortex model, the law of conservation of momentum, and the boundary conditions for a confined vortex chamber, a simple formula for angular velocity was derived. By applying the Navier-Stokes governing equation coupled with the angular velocity derived in this study, a vortex flow pattern model was developed. Based on the balance of forces acting on a particle, a new particle settling formula for natural sediment particles was proposed. Additionally, using the particle settling velocity and the flow pattern derived for the confined vortex chamber, the particle trajectory equations were derived in this study. A new sizing equation for the confined vortex chamber was developed from the newly-derived particle trajectory. The new sizing equation was validated by laboratory measured particle removal efficiencies. The results generated from this dissertation research will help design, performance evaluation, as well as improvement of the hydrodynamic separators.

Advisors/Committee Members: Li, Yunjie (author), Guo, Qizhong (chair), Medlar, Steven (internal member), Balaguru, Perumalsamy (internal member), Bagchi, Prosenjit (outside member).

Subjects/Keywords: Hydraulic measurements; Separators (Machines); Water quality management – Equipment and supplies

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APA (6^th Edition):

Li, Y. (2009). Development of design basis for hydrodynamic vortex separators. (Doctoral Dissertation). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051044

Chicago Manual of Style (16^th Edition):

Li, Yunjie. “Development of design basis for hydrodynamic vortex separators.” 2009. Doctoral Dissertation, Rutgers University. Accessed March 05, 2021. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051044.

MLA Handbook (7^th Edition):

Li, Yunjie. “Development of design basis for hydrodynamic vortex separators.” 2009. Web. 05 Mar 2021.

Vancouver:

Li Y. Development of design basis for hydrodynamic vortex separators. [Internet] [Doctoral dissertation]. Rutgers University; 2009. [cited 2021 Mar 05]. Available from: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051044.

Council of Science Editors:

Li Y. Development of design basis for hydrodynamic vortex separators. [Doctoral Dissertation]. Rutgers University; 2009. Available from: http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051044

University of New South Wales

26. McCabe, Anthony. Monitoring of bed load discharge in N.S.W. rivers.

Degree: Water Research Laboratory, 1989, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/56461 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:40746/SOURCE02?view=true

Subjects/Keywords: River sediment transport; Hydraulic measurements, N; Stream measurements; Thesis Digitisation Program; WRL Digitisation; WRL Thesis

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APA (6^th Edition):

McCabe, A. (1989). Monitoring of bed load discharge in N.S.W. rivers. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/56461 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:40746/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

McCabe, Anthony. “Monitoring of bed load discharge in N.S.W. rivers.” 1989. Masters Thesis, University of New South Wales. Accessed March 05, 2021. http://handle.unsw.edu.au/1959.4/56461 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:40746/SOURCE02?view=true.

MLA Handbook (7^th Edition):

McCabe, Anthony. “Monitoring of bed load discharge in N.S.W. rivers.” 1989. Web. 05 Mar 2021.

Vancouver:

McCabe A. Monitoring of bed load discharge in N.S.W. rivers. [Internet] [Masters thesis]. University of New South Wales; 1989. [cited 2021 Mar 05]. Available from: http://handle.unsw.edu.au/1959.4/56461 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:40746/SOURCE02?view=true.

Council of Science Editors:

McCabe A. Monitoring of bed load discharge in N.S.W. rivers. [Masters Thesis]. University of New South Wales; 1989. Available from: http://handle.unsw.edu.au/1959.4/56461 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:40746/SOURCE02?view=true

27. Gupta, Rakesh Kumar. Analysis and control of flows in pressurized hydraulic networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft.

Degree: 2006, Taylor & Francis

URL: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/27429

► Analysis, design and flow control problems in pressurized hydraulic networks such as water transmission and distribution systems consisting of pipes and other appurtenant components such… (more)

Subjects/Keywords: Hydraulic control.; Pipelines; Fluid dynamic measurements.; networks; network analysis; network design; hydraulics; pressure surges

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APA (6^th Edition):

Gupta, R. K. (2006). Analysis and control of flows in pressurized hydraulic networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft. (Doctoral Dissertation). Taylor & Francis. Retrieved from http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/27429

Chicago Manual of Style (16^th Edition):

Gupta, Rakesh Kumar. “Analysis and control of flows in pressurized hydraulic networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft.” 2006. Doctoral Dissertation, Taylor & Francis. Accessed March 05, 2021. http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/27429.

MLA Handbook (7^th Edition):

Gupta, Rakesh Kumar. “Analysis and control of flows in pressurized hydraulic networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft.” 2006. Web. 05 Mar 2021.

Vancouver:

Gupta RK. Analysis and control of flows in pressurized hydraulic networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft. [Internet] [Doctoral dissertation]. Taylor & Francis; 2006. [cited 2021 Mar 05]. Available from: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/27429.

Council of Science Editors:

Gupta RK. Analysis and control of flows in pressurized hydraulic networks; Dissertation, UNESCO-IHE Institute for Water Education, Delft. [Doctoral Dissertation]. Taylor & Francis; 2006. Available from: http://cdm21063.contentdm.oclc.org/cdm/ref/collection/phd1/id/27429

KTH

28. Borg, Richard. Pilot Testing of a Hydraulic Bridge Exciter.

Degree: Structural Engineering and Bridges, 2015, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170113

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In the design of a railway bridge that is meant for train speeds larger than 200 km/h, the Swedish Traffic Administration requires a dynamic… (more)

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In the design of a railway bridge that is meant for train speeds larger than 200 km/h, the Swedish Traffic Administration requires a dynamic analysis in addition to the conventional static design. The models used for static design may not always be suitable for dynamic analysis, which could lead to inaccurate estimations of the dynamic response. The reason for this is a limited knowledge of the actual structural dynamic behaviour of bridges, which is why a hydraulic bridge exciter has been developed. With this device, smaller bridges can be excited in a load- or displacement-controlled manner under variable frequency and load. By having known inputs, the bridges’ dynamic properties can be evaluated using experimental modal analysis. A finite element model of the double tracked railway bridge Pershagen was created in order to plan a pilot test of the bridge exciter. The influence of the load amplitude and sweep rate was evaluated. A theoretically optimal excitation position was also investigated in order to excite as many eigenmodes as possible from one position during the pilot test. Based on these results, a pilot test was performed on the Pershagen Bridge. The dynamic properties of the bridge were evaluated based on the results from the test. From the pilot test it could be concluded that the load amplitude had a direct influence on the dynamic properties of the bridge, hence the dynamic behaviour is non-linear. The 1st vertical bending mode and its dynamic properties could also be identified.

Då en järnvägsbro som är avsedd för tåghastigheter över 200 km/h ska dimensioneras ställs det krav av Trafikverket att en dynamisk analys av bron skall utföras, utöver konventionell statisk dimensionering. De bromodeller som används för statisk analys är dock inte alltid lämpliga för dynamisk analys, vilket kan leda till felaktiga skattningar gällande den dynamiska inverkan. Anledningen till detta är att kunskapen om broars dynamiska egenskaper är begränsade, och av denna anledning har en lastexciterare utvecklats. Med hjälp av denna anordning kan mindre broar exciteras med kontrollerad last eller förskjutning under variabel frekvens och last. Då dessa input-parametrar är kända kan broars dynamiska egenskaper utvärderas genom experimentell modal analys. En finit element-modell av den tvåspåriga järnvägsbron vid Pershagen har skapats för att kunna planera ett pilottest av lastexciteraren. Svephastigheten och lastamplituden har analyserats. En teoretiskt optimal exciteringsposition har utvärderats för att excitera största möjliga antal moder från en och samma position under pilottestet. Utifrån dessa resultat utfördes ett pilottest på bron vid Pershagen, där brons dynamiska egenskaper utvärderades utifrån resultaten. Från pilottestet kunde en slutsats dras om att lastamplituden hade en direkt inverkan på de dynamiska egenskaperna, vilket betyder att det dynamiska beteendet är olinjärt. Den första vertikala böjmoden och dess dynamiska egenskaper kunde också fastställas.

Subjects/Keywords: Hydraulic bridge exciter; controlled excitation; modal testing; experimental modal analysis; railway bridges; measurements; load shaker; FEM; FE-modelling; script; Hydraulisk broexciterare; kontrollerad excitering; modala tester; experimentell modal analys; järnvägsbroar; mätningar; lastexciterare; FEM; FE-modellering; script

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APA (6^th Edition):

Borg, R. (2015). Pilot Testing of a Hydraulic Bridge Exciter. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170113

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):

Borg, Richard. “Pilot Testing of a Hydraulic Bridge Exciter.” 2015. Thesis, KTH. Accessed March 05, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170113.

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

MLA Handbook (7^th Edition):

Borg, Richard. “Pilot Testing of a Hydraulic Bridge Exciter.” 2015. Web. 05 Mar 2021.

Vancouver:

Borg R. Pilot Testing of a Hydraulic Bridge Exciter. [Internet] [Thesis]. KTH; 2015. [cited 2021 Mar 05]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170113.

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

Council of Science Editors:

Borg R. Pilot Testing of a Hydraulic Bridge Exciter. [Thesis]. KTH; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170113

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

Michigan State University

29. Stier, Bernd. An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept – LIPA.

Degree: PhD, Department of Mechanical Engineering, 1994, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:23806

Subjects/Keywords: Fluid power technology – Computer simulation; Hydraulic control – Data processing; Internal combustion engines – Design and construction; Optical measurements

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APA (6^th Edition):

Stier, B. (1994). An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept – LIPA. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:23806

Chicago Manual of Style (16^th Edition):

Stier, Bernd. “An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept – LIPA.” 1994. Doctoral Dissertation, Michigan State University. Accessed March 05, 2021. http://etd.lib.msu.edu/islandora/object/etd:23806.

MLA Handbook (7^th Edition):

Stier, Bernd. “An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept – LIPA.” 1994. Web. 05 Mar 2021.

Vancouver:

Stier B. An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept – LIPA. [Internet] [Doctoral dissertation]. Michigan State University; 1994. [cited 2021 Mar 05]. Available from: http://etd.lib.msu.edu/islandora/object/etd:23806.

Council of Science Editors:

Stier B. An investigation of fluid flow during induction stroke of a water analog model of an IC engine using an innovative optical velocimetry concept – LIPA. [Doctoral Dissertation]. Michigan State University; 1994. Available from: http://etd.lib.msu.edu/islandora/object/etd:23806

30. Absalyamova, Viktoriya. Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design.

Degree: Mechanical Engineering, 2010, Dalarna University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:du-5099

► Energy efficiency and renewable energy use are two main priorities leading to industrial sustainability nowadays according to European Steel Technology Platform (ESTP). Modernization efforts… (more)

▼ Energy efficiency and renewable energy use are two main priorities leading to industrial sustainability nowadays according to European Steel Technology Platform (ESTP). Modernization efforts can be done by industries to improve energy consumptions of the production lines. These days, steel making industrial applications are energy and emission intensive. It was estimated that over the past years, energy consumption and corresponding CO2 generation has increased steadily reaching approximately 338.15 parts per million in august 2010 [1]. These kinds of facts and statistics have introduced a lot of room for improvement in energy efficiency for industrial applications through modernization and use of renewable energy sources such as solar Photovoltaic Systems (PV).The purpose of this thesis work is to make a preliminary design and simulation of the solar photovoltaic system which would attempt to cover the energy demand of the initial part of the pickling line hydraulic system at the SSAB steel plant. For this purpose, the energy consumptions of this hydraulic system would be studied and evaluated and a general analysis of the hydraulic and control components performance would be done which would yield a proper set of guidelines contributing towards future energy savings. The results of the energy efficiency analysis showed that the initial part of the pickling line hydraulic system worked with a low efficiency of 3.3%. Results of general analysis showed that hydraulic accumulators of 650 liter size should be used by the initial part pickling line system in combination with a one pump delivery of 100 l/min. Based on this, one PV system can deliver energy to an AC motor-pump set covering 17.6% of total energy and another PV system can supply a DC hydraulic pump substituting 26.7% of the demand. The first system used 290 m2 area of the roof and was sized as 40 kWp, the second used 109 m2 and was sized as 15.2 kWp. It was concluded that the reason for the low efficiency was the oversized design of the system. Incremental modernization efforts could help to improve the hydraulic system energy efficiency and make the design of the solar photovoltaic system realistically possible. Two types of PV systems where analyzed in the thesis work. A method was found calculating the load simulation sequence based on the energy efficiency studies to help in the PV system simulations. Hydraulic accumulators integrated into the pickling line worked as energy storage when being charged by the PV system as well.

Subjects/Keywords: Photovoltaic system; solar energy; energy efficiency; energy storage; Matlab; PVSYST; steel; pickling line; industrial emissions; environmental visions; pressure measurements; hydraulic system; electrical motors; hydraulic accumulators; variable speed drives; programmable valves; Projekt Hydraulik AB; HYDAC Fluidteknik AB; SSAB Tunnplåt AB

…part pickling line hydraulic system is based on the pressure measurements for each hydraulic… …component integrated into the hydraulic system and the current measurements of the electrical… …motors which are delivering energy into the hydraulic system. The pressure measurements and the… …e, sek Time, sec Figure 4.9 Pressure measurements of press roll driving hydraulic motor… …measurements of press roll hydraulic cylinder 80 Press Roll Cylinder pressure vs time S y s t e m…

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APA (6^th Edition):

Absalyamova, V. (2010). Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design. (Thesis). Dalarna University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:du-5099

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):

Absalyamova, Viktoriya. “Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design.” 2010. Thesis, Dalarna University. Accessed March 05, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:du-5099.

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

MLA Handbook (7^th Edition):

Absalyamova, Viktoriya. “Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design.” 2010. Web. 05 Mar 2021.

Vancouver:

Absalyamova V. Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design. [Internet] [Thesis]. Dalarna University; 2010. [cited 2021 Mar 05]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:du-5099.

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

Council of Science Editors:

Absalyamova V. Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design. [Thesis]. Dalarna University; 2010. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:du-5099

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

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