subject:(plumes)

Texas A&M University

1. Bryant, Duncan Burnette. Coherent Structures in Turbulent Flows: Experimental Studies on the Turbulence of Multiphase Plumes and Tidal Vortices.

Degree: PhD, Ocean Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7893

► This dissertation presents the turbulence of multiphase plumes and tidal vortices by studying and quantifying coherent structures that affect the dynamics of the flow. The… (more)

▼ This dissertation presents the turbulence of multiphase plumes and tidal vortices by studying and quantifying coherent structures that affect the dynamics of the flow. The measurements presented in this dissertation were taken using particle image velocimetry (PIV). After preprocessing the images and conducting the PIV analysis to get the final velocity fields, the local swirl strength was used to identify coherent structures (vortices) in the flow. This dissertation used the identified vortices to quantify the turbulent properties of the flows. The mean and turbulent properties of bubble plumes are found to be self-similar within the measured air flow rates when appropriately nondimensionalized. The timeaveraged velocity profile was shown to have a Gaussian distribution when nondimensionalized by the centerline velocity and plume radius. The bubble plumes were found to have the most energetic vortices along the plume edge and a modulated turbulent energy spectrum with a slope in the inertial subrange from -7/6 instead of the classical -5/3. The mean and turbulent properties of an inertial particle plume are presented, revealing the time-averaged velocity and vorticity profiles to be self-similar for all cases when nondimesionalized by the centerline velocity and plume radius. The average vortex properties were not self-similar for all flow cases with the largest two particles sizes being self-similar and the smallest particle vortex properties being similar to bubble plume data. Despite the difference in vortex properties, the turbulent energy spectra in inertial particle plumes followed the same modulation as the bubble plumes. PIV experiments from the tidal starting-jet vortices detail the influence of a finite channel length using identified vortice. The results show the trajectory and development of the tidal starting-jet vortices to be changed by a region of vorticity that develops inside the channel and is expelled as a vortex during the ebb tide. This expelled lateral boundary layer vortex is shown to move the starting-jet vortex away from the tidal jet shear layer thus reducing the input vorticity. When the expelled boundary layer vortex strength is 1/5 the starting-jet vortex the system dynamics change resulting in a deviation in the starting-jet vortices' trajectory. This dissertation successfully uses the local swirl strength to quantify the turbulence of multiphase plumes and tidal starting-jet vortices. Using these results, engineers will be able to better predict the efficiency of CO2 ocean sequestration and tidal flushing. Furthermore, the techniques of quantifying coherent structures developed in this dissertation can be applied to a multitude of turbulent flows. Advisors/Committee Members: Socolofsky, Scott A. (advisor), Hassan, Yassin A. (committee member), Kaihatu, James (committee member), Chang, Kuang-An (committee member).

Subjects/Keywords: Plumes; Vortex; Tides

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APA (6^th Edition):

Bryant, D. B. (2011). Coherent Structures in Turbulent Flows: Experimental Studies on the Turbulence of Multiphase Plumes and Tidal Vortices. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7893

Chicago Manual of Style (16^th Edition):

Bryant, Duncan Burnette. “Coherent Structures in Turbulent Flows: Experimental Studies on the Turbulence of Multiphase Plumes and Tidal Vortices.” 2011. Doctoral Dissertation, Texas A&M University. Accessed January 25, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7893.

MLA Handbook (7^th Edition):

Bryant, Duncan Burnette. “Coherent Structures in Turbulent Flows: Experimental Studies on the Turbulence of Multiphase Plumes and Tidal Vortices.” 2011. Web. 25 Jan 2021.

Vancouver:

Bryant DB. Coherent Structures in Turbulent Flows: Experimental Studies on the Turbulence of Multiphase Plumes and Tidal Vortices. [Internet] [Doctoral dissertation]. Texas A&M University; 2011. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7893.

Council of Science Editors:

Bryant DB. Coherent Structures in Turbulent Flows: Experimental Studies on the Turbulence of Multiphase Plumes and Tidal Vortices. [Doctoral Dissertation]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7893

University of Utah

2. Centauri, Laurie Ann. Uncertainty quantification for holographic interferographic images.

Degree: MS, Chemical Engineering, 2010, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/400/rec/2820

► Current comparison methods for experimental and simulated holographic interferometric images are qualitative in nature. Previous comparisons of holographic interferometric images with computational fluid dynamics (CFD)… (more)

▼ Current comparison methods for experimental and simulated holographic interferometric images are qualitative in nature. Previous comparisons of holographic interferometric images with computational fluid dynamics (CFD) simulations for validation have been performed qualitatively through visual comparison by a data analyst. By validating the experiments and CFD simulations in a quantifiable manner using a consistency analysis, the validation becomes a repeatable process that gives a consistency measure and a range of inputs over which the experiments and CFD simulations give consistent results. The quantification of uncertainty in four holographic interferometric experiments was performed for use in a data collaboration with CFD simulations for the purpose of validation. The model uncertainty from image-rocessing, the measurement uncertainty from experimental data variation, and the scenario uncertainty from the bias and parameter uncertainty was quantified. The scenario uncertainty was determined through comparison with an analytical solution at the helium inlet (height, x = 0), including the uncertainty in the experimental parameters from historical weather data. The model uncertainty was calculated through a Box-Behnkin sensitivity analysis on three imageprocessing code parameters. Measurement uncertainty was determined through a statistical analysis to determine the time-average and standard deviation in the interference fringe positions. An experimental design matrix of CFD simulations was iv performed by Weston Eldredge using a Box-Behnkin design with helium velocity, temperature, and air co-flow velocity as parameters in conjunction to provide simulated measurements for the data collaboration Data set. Over 3,200 holographic interferometric images were processed through the course of this study. When each permutation of these images is taken into account through all the image-processing steps, the total number of images processed is over 13,000. Probability distribution functions were plotted for each interference fringe order at each measurement height, making a total of 22 PDFs. Model, scenario, and measurement uncertainty was quantified in the experiments. The CFD simulations were performed. The final uncertainty attributed to the experiments resulted in a maximum uncertainty of -7.96 fringes. The largest contributor to uncertainty was the scenario uncertainty with measurement uncertainty as the second largest. The model uncertainty was very small and as such had the smallest contribution to the overall experimental uncertainty. In the future, the results of this study will be used in conjunction with the CFD simulations discussed and their attributed error in a data collaboration to determine Data set consistency for validation.

Subjects/Keywords: Holographic interferometry; Plumes; Uncertainty quantification

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APA (6^th Edition):

Centauri, L. A. (2010). Uncertainty quantification for holographic interferographic images. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/400/rec/2820

Chicago Manual of Style (16^th Edition):

Centauri, Laurie Ann. “Uncertainty quantification for holographic interferographic images.” 2010. Masters Thesis, University of Utah. Accessed January 25, 2021. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/400/rec/2820.

MLA Handbook (7^th Edition):

Centauri, Laurie Ann. “Uncertainty quantification for holographic interferographic images.” 2010. Web. 25 Jan 2021.

Vancouver:

Centauri LA. Uncertainty quantification for holographic interferographic images. [Internet] [Masters thesis]. University of Utah; 2010. [cited 2021 Jan 25]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/400/rec/2820.

Council of Science Editors:

Centauri LA. Uncertainty quantification for holographic interferographic images. [Masters Thesis]. University of Utah; 2010. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/400/rec/2820

University of Alberta

3. Richards-Thomas, Tamar S. Forced Plumes in Uniformly Stratified Environment.

Degree: MS, Department of Earth and Atmospheric Sciences, 2014, University of Alberta

URL: https://era.library.ualberta.ca/files/cws859f82b

► This research investigates radially spreading intrusion created from a forced plume, when fluid continuously injected vertically from a nozzle entrains uniformly stratified ambient as it… (more)

Subjects/Keywords: Stratified; Forced Plumes; Environment

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APA (6^th Edition):

Richards-Thomas, T. S. (2014). Forced Plumes in Uniformly Stratified Environment. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/cws859f82b

Chicago Manual of Style (16^th Edition):

Richards-Thomas, Tamar S. “Forced Plumes in Uniformly Stratified Environment.” 2014. Masters Thesis, University of Alberta. Accessed January 25, 2021. https://era.library.ualberta.ca/files/cws859f82b.

MLA Handbook (7^th Edition):

Richards-Thomas, Tamar S. “Forced Plumes in Uniformly Stratified Environment.” 2014. Web. 25 Jan 2021.

Vancouver:

Richards-Thomas TS. Forced Plumes in Uniformly Stratified Environment. [Internet] [Masters thesis]. University of Alberta; 2014. [cited 2021 Jan 25]. Available from: https://era.library.ualberta.ca/files/cws859f82b.

Council of Science Editors:

Richards-Thomas TS. Forced Plumes in Uniformly Stratified Environment. [Masters Thesis]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/cws859f82b

4. Kida, Shinichiro. Eddy dynamics of ß plumes.

Degree: 2003, MIT and Woods Hole Oceanographic Institution

URL: http://hdl.handle.net/1912/1835

► The importance of eddies and nonlinearities in ß-plume dynamics in the deep ocean was investigated using reduced gravity models of the deep ocean forced by… (more)

Subjects/Keywords: Eddies; Plumes

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APA (6^th Edition):

Kida, S. (2003). Eddy dynamics of ß plumes. (Thesis). MIT and Woods Hole Oceanographic Institution. Retrieved from http://hdl.handle.net/1912/1835

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):

Kida, Shinichiro. “Eddy dynamics of ß plumes.” 2003. Thesis, MIT and Woods Hole Oceanographic Institution. Accessed January 25, 2021. http://hdl.handle.net/1912/1835.

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

MLA Handbook (7^th Edition):

Kida, Shinichiro. “Eddy dynamics of ß plumes.” 2003. Web. 25 Jan 2021.

Vancouver:

Kida S. Eddy dynamics of ß plumes. [Internet] [Thesis]. MIT and Woods Hole Oceanographic Institution; 2003. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1912/1835.

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

Council of Science Editors:

Kida S. Eddy dynamics of ß plumes. [Thesis]. MIT and Woods Hole Oceanographic Institution; 2003. Available from: http://hdl.handle.net/1912/1835

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

University of Cambridge

5. Parker, David. Turbulent entrainment in flows induced by distributed buoyancy sources.

Degree: PhD, 2020, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/305025

► Free shear and wall-bounded buoyancy-driven turbulent flows occur in both natural environments and industrial situations. In this thesis, to better understand the entrainment process within… (more)

▼ Free shear and wall-bounded buoyancy-driven turbulent flows occur in both natural environments and industrial situations. In this thesis, to better understand the entrainment process within these flows, experiments and theory have been used to investigate point and distributed buoyancy sources and, in particular, the effect of a bounding vertical wall on these flows. A free shear flow was first investigated by performing velocity and scalar edge measurements on an axisymmetric plume created by a continuous point source release of buoyancy. By conditionally sampling the velocity measurements based on the presence of both eddies and plume fluid, engulfment, whereby large pockets of ambient are engulfed in to the plume, was shown to be a dominant turbulent entrainment process. To isolate the effect of a wall on a turbulent buoyancy-driven flow, a line plume distant from all vertical boundaries and a wall plume, adjacent to a vertical wall were also studied. Simultaneous velocity and buoyancy field measurements were performed and a reduction in the net entrainment, and entrainment coefficient, for a wall plume were found. This reduction was investigated by considering an energy decomposition of the entrainment coefficient where the relative contributions of turbulent production, buoyancy and viscous terms were calculated. The reduced entrainment was also investigated by considering the statistics of the turbulent interface. Finally, simultaneous velocity and buoyancy field measurements on a vertically distributed buoyant plume were performed by forcing relatively dense fluid through a very low porosity plate. A reduced entrainment coefficient, compared to that of a wall plume, was observed. In order to model the ventilation of a room with a heated or cooled wall the flow was then enclosed within a mechanically ventilated model room. The evolving and steady-state ambient stratification was measured using dye-attenuation with an LED-light bank for varying buoyancy fluxes and ventilation flow rates.

Subjects/Keywords: Turbulence; Fluid Mechanics; Plumes

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

APA (6^th Edition):

Parker, D. (2020). Turbulent entrainment in flows induced by distributed buoyancy sources. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/305025

Chicago Manual of Style (16^th Edition):

Parker, David. “Turbulent entrainment in flows induced by distributed buoyancy sources.” 2020. Doctoral Dissertation, University of Cambridge. Accessed January 25, 2021. https://www.repository.cam.ac.uk/handle/1810/305025.

MLA Handbook (7^th Edition):

Parker, David. “Turbulent entrainment in flows induced by distributed buoyancy sources.” 2020. Web. 25 Jan 2021.

Vancouver:

Parker D. Turbulent entrainment in flows induced by distributed buoyancy sources. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Jan 25]. Available from: https://www.repository.cam.ac.uk/handle/1810/305025.

Council of Science Editors:

Parker D. Turbulent entrainment in flows induced by distributed buoyancy sources. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://www.repository.cam.ac.uk/handle/1810/305025

University of Cambridge

6. Parker, David. Turbulent entrainment in flows induced by distributed buoyancy sources.

Degree: PhD, 2020, University of Cambridge

URL: https://doi.org/10.17863/CAM.52106 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.805892

► Free shear and wall-bounded buoyancy-driven turbulent flows occur in both natural environments and industrial situations. In this thesis, to better understand the entrainment process within… (more)

▼ Free shear and wall-bounded buoyancy-driven turbulent flows occur in both natural environments and industrial situations. In this thesis, to better understand the entrainment process within these flows, experiments and theory have been used to investigate point and distributed buoyancy sources and, in particular, the effect of a bounding vertical wall on these flows. A free shear flow was first investigated by performing velocity and scalar edge measurements on an axisymmetric plume created by a continuous point source release of buoyancy. By conditionally sampling the velocity measurements based on the presence of both eddies and plume fluid, engulfment, whereby large pockets of ambient are engulfed in to the plume, was shown to be a dominant turbulent entrainment process. To isolate the effect of a wall on a turbulent buoyancy-driven flow, a line plume distant from all vertical boundaries and a wall plume, adjacent to a vertical wall were also studied. Simultaneous velocity and buoyancy field measurements were performed and a reduction in the net entrainment, and entrainment coefficient, for a wall plume were found. This reduction was investigated by considering an energy decomposition of the entrainment coefficient where the relative contributions of turbulent production, buoyancy and viscous terms were calculated. The reduced entrainment was also investigated by considering the statistics of the turbulent interface. Finally, simultaneous velocity and buoyancy field measurements on a vertically distributed buoyant plume were performed by forcing relatively dense fluid through a very low porosity plate. A reduced entrainment coefficient, compared to that of a wall plume, was observed. In order to model the ventilation of a room with a heated or cooled wall the flow was then enclosed within a mechanically ventilated model room. The evolving and steady-state ambient stratification was measured using dye-attenuation with an LED-light bank for varying buoyancy fluxes and ventilation flow rates.

Subjects/Keywords: Turbulence; Fluid Mechanics; Plumes

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

APA (6^th Edition):

Parker, D. (2020). Turbulent entrainment in flows induced by distributed buoyancy sources. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.52106 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.805892

Chicago Manual of Style (16^th Edition):

Parker, David. “Turbulent entrainment in flows induced by distributed buoyancy sources.” 2020. Doctoral Dissertation, University of Cambridge. Accessed January 25, 2021. https://doi.org/10.17863/CAM.52106 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.805892.

MLA Handbook (7^th Edition):

Parker, David. “Turbulent entrainment in flows induced by distributed buoyancy sources.” 2020. Web. 25 Jan 2021.

Vancouver:

Parker D. Turbulent entrainment in flows induced by distributed buoyancy sources. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Jan 25]. Available from: https://doi.org/10.17863/CAM.52106 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.805892.

Council of Science Editors:

Parker D. Turbulent entrainment in flows induced by distributed buoyancy sources. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://doi.org/10.17863/CAM.52106 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.805892

Rutgers University

7. VanderVeer, Joseph R., 1982-. Solutions of inverse convection problems by a predictor-corrector technique.

Degree: PhD, Mechanical and Aerospace Engineering, 2014, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/45552/

►

A predictor-corrector technique for solving inverse convection problems was developed, tested, and re fined. The methodology was tested against three inverse problems: inverse plume in… (more)

▼

A predictor-corrector technique for solving inverse convection problems was developed, tested, and re fined. The methodology was tested against three inverse problems: inverse plume in a crossflow, inverse jet in a crossflow, and inverse plume in a cavity. The goal of the inverse plume in a crossflow was to solve for the strength and location (x, y) of the source. After refinement, the methodology was able to predict all three goals, utilizing three sample points to within 2.5%. Error analysis demonstrated that three sample points was unable to tolerate any simulation-experimental error. Therefore, when handling experimental data, an increase in the number of sample points is required, to a minimum of five. The error analysis also showed that the methodology, with five or more sample points, is remarkably stable in its prediction capability. The location prediction was minimally affected, less than 0.1%, by an artificial error of 10%. The goal of the inverse jet in a crossflow was to solve for the strength (velocity and temperature) and location (x, y) of the source. After testing, the methodology was not able to predict all four goals. The elevation location of the jet needed to be known to adequately solve the inverse problem. The methodology was able to predict the source velocity and temperature to within 10% and 3.3% respectively. The goal of the inverse plume in a cavity was to find the strength and location (x, y) of the source. Sensitivity analysis demonstrate it is very difficult, if not impossible, to resolve source location using this methodology. The method was able to predict the source strength within 5% using only one sample point. With future work, this approach could be extended to applied areas of interest, such as environmental flows, room fires, and thermal management systems.

Advisors/Committee Members: Jaluria, Yogesh (chair), Shan, Jerry (internal member), Knight, Doyle (internal member), Rossmann, Tobias (outside member).

Subjects/Keywords: Heat – Transmission; Plumes (Fluid dynamics)

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APA (6^th Edition):

VanderVeer, Joseph R., 1. (2014). Solutions of inverse convection problems by a predictor-corrector technique. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/45552/

Chicago Manual of Style (16^th Edition):

VanderVeer, Joseph R., 1982-. “Solutions of inverse convection problems by a predictor-corrector technique.” 2014. Doctoral Dissertation, Rutgers University. Accessed January 25, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/45552/.

MLA Handbook (7^th Edition):

VanderVeer, Joseph R., 1982-. “Solutions of inverse convection problems by a predictor-corrector technique.” 2014. Web. 25 Jan 2021.

Vancouver:

VanderVeer, Joseph R. 1. Solutions of inverse convection problems by a predictor-corrector technique. [Internet] [Doctoral dissertation]. Rutgers University; 2014. [cited 2021 Jan 25]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45552/.

Council of Science Editors:

VanderVeer, Joseph R. 1. Solutions of inverse convection problems by a predictor-corrector technique. [Doctoral Dissertation]. Rutgers University; 2014. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45552/

Rutgers University

8. Vidito, Christopher A. Petrologic implications from the chemistry of olivine phenocrysts.

Degree: PhD, Geological Sciences, 2014, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/45556/

►

Source lithology of mantle plumes and other volcanic sources has been inferred from isotopic data for decades, however these studies cannot determine if the geochemical… (more)

▼

Source lithology of mantle plumes and other volcanic sources has been inferred from isotopic data for decades, however these studies cannot determine if the geochemical signature of pyroxenitic source is due to the presence of a pyroxenite, or if the geochemical signature had been imprinted upon peridotite by some metosomatic process (e.g. refertilization). Mn, Ca and Ni concentrations in olivines are used to infer the source lithology of primitive basalts. Secular cooling of the Galápagos hotspot has been established by petrologic modeling. An increase in the entrainment of relatively dense pyroxenite in the Galápagos plume over time may explain this trend in decreasing Tp with time, as pyroxenite entrainment would have a negative effect on the buoyancy of the plume. Analyses of olivines from Curacao indicates that pyroxenite was absent in the source of these Cretaceous age Galápagos plume lavas. Magmatism preserved at Quepos marks the transition of the Galápagos plume from the head (LIP) stage to the tail (hotspot track) stage. Major and trace element analyses of Quepos samples show a geochemical signal of a pyroxenite. The presence of pyroxenite as a distinct lithology in the source of these lavas is confirmed by olivine analyses. The extreme enrichment of radiogenic lead found in the lavas of Mangaia have long been interpreted as reflecting a component of ancient recycled crust and is representative of the isotopic endmember HIMU. Olivine analyses of samples from Mangaia indicate that the source of these lavas is predominantly peridotite. If the source of Mangaia had a substantial pyroxenitic component, as inferred from isotopic data, then it is likely that it had its lithological identity destroyed. This may have been the result of the refertilization of mantle periditote by the injection of silicic, pyroxenite source melt. Ni excess observed in the chemistry of olivines from various LIPs and hotspots contrast their Mn and Ca concentrations which are indicative of a peridotite source. High 3He/4He found in samples for which He analysis has been done, suggest a deep lower mantle source. The Ni excess may be due to the interaction between the lower mantle and the core.

Advisors/Committee Members: Herzberg, Claude T (chair), Feigenson, Mark D (internal member), Van Tongeren, Jill (internal member), Gazel, Esteban (outside member).

Subjects/Keywords: Volcanoes; Mantle plumes; Pyroxenite

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APA (6^th Edition):

Vidito, C. A. (2014). Petrologic implications from the chemistry of olivine phenocrysts. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/45556/

Chicago Manual of Style (16^th Edition):

Vidito, Christopher A. “Petrologic implications from the chemistry of olivine phenocrysts.” 2014. Doctoral Dissertation, Rutgers University. Accessed January 25, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/45556/.

MLA Handbook (7^th Edition):

Vidito, Christopher A. “Petrologic implications from the chemistry of olivine phenocrysts.” 2014. Web. 25 Jan 2021.

Vancouver:

Vidito CA. Petrologic implications from the chemistry of olivine phenocrysts. [Internet] [Doctoral dissertation]. Rutgers University; 2014. [cited 2021 Jan 25]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45556/.

Council of Science Editors:

Vidito CA. Petrologic implications from the chemistry of olivine phenocrysts. [Doctoral Dissertation]. Rutgers University; 2014. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/45556/

University of Cambridge

9. Dadonau, Maksim. The effect of double diffusion on the dynamics of turbulent plumes and jets.

Degree: PhD, 2020, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/311542

► This thesis presents the experimental investigation of the effect of double diffusion on the dynamics of turbulent plumes and jets. Although it consists of seven… (more)

▼ This thesis presents the experimental investigation of the effect of double diffusion on the dynamics of turbulent plumes and jets. Although it consists of seven distinct chapters, the work presented here can be broadly broken down into two parts. The first part addresses the effect of double diffusion on the rate of entrainment in turbulent plumes in the salt-fingering configuration. Plumes over a range of source buoyancy fluxes B0 and source density ratios Rρ are examined experimentally using two experimental methods. The first method is based on the filling-box technique introduced by Baines (1983), which allows the plume volume flux to be measured directly. The second method uses PIV and LIF to obtain simultaneous two-dimensional measurements of the velocity and scalar fields within the flow. The results obtained using both techniques reveal that when the plumes are double-diffusive (Rρ > 0) the rate of turbulent entrainment is not constant, with an up to 20% reduction in the value of the entrainment coefficient from the value found for single-diffusive plumes, i.e. plumes with Rρ = 0. The scale of reduction is found to be in direct relation to the source density ratio and is inversely related to the distance travelled by the plume, indicating that double-diffusive effects decrease as the plume evolves. Ultimately, double-diffusive plumes attain self-similarity and resemble the behaviour of single-diffusive plumes. We propose an explanation for the observed reduction in the entrainment coefficient on the basis of differential diffusion hindering large-scale engulfment at the edge of the plume. For the second part, we investigate the effect of double diffusion on the dynamics of initially neutrally-buoyant warm and salty turbulent jets discharged horizontally into stationary cooler freshwater ambient. Jets over a range of source Reynolds numbers and source temperature/salinity combinations are examined. In all cases, we observed sinking jet trajectories and the formation of salt fingers along the lower surface. Increasing the source concentration of both scalar properties led to more pronounced jet sinking trajectories and earlier formation of salt fingers, demonstrating the significance of the double-diffusive processes. We propose that is it the differential double-diffusive fluxes across the jet-ambient turbulent/non-turbulent interfaces that causes the build-up of negative buoyancy and hence the sinking motion. In addition, we make predictions on the onset point of the salt fingers based on the balance between diffusive processes and the jet entrainment, and compare them with the experimental observations.

Subjects/Keywords: Plumes/jets; Double diffusion

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APA (6^th Edition):

Dadonau, M. (2020). The effect of double diffusion on the dynamics of turbulent plumes and jets. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/311542

Chicago Manual of Style (16^th Edition):

Dadonau, Maksim. “The effect of double diffusion on the dynamics of turbulent plumes and jets.” 2020. Doctoral Dissertation, University of Cambridge. Accessed January 25, 2021. https://www.repository.cam.ac.uk/handle/1810/311542.

MLA Handbook (7^th Edition):

Dadonau, Maksim. “The effect of double diffusion on the dynamics of turbulent plumes and jets.” 2020. Web. 25 Jan 2021.

Vancouver:

Dadonau M. The effect of double diffusion on the dynamics of turbulent plumes and jets. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Jan 25]. Available from: https://www.repository.cam.ac.uk/handle/1810/311542.

Council of Science Editors:

Dadonau M. The effect of double diffusion on the dynamics of turbulent plumes and jets. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://www.repository.cam.ac.uk/handle/1810/311542

University of Cambridge

10. Dadonau, Maksim. The effect of double diffusion on the dynamics of turbulent plumes and jets.

Degree: PhD, 2020, University of Cambridge

URL: https://doi.org/10.17863/CAM.58635 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.818177

► This thesis presents the experimental investigation of the effect of double diffusion on the dynamics of turbulent plumes and jets. Although it consists of seven… (more)

▼ This thesis presents the experimental investigation of the effect of double diffusion on the dynamics of turbulent plumes and jets. Although it consists of seven distinct chapters, the work presented here can be broadly broken down into two parts. The first part addresses the effect of double diffusion on the rate of entrainment in turbulent plumes in the salt-fingering configuration. Plumes over a range of source buoyancy fluxes B0 and source density ratios Rρ are examined experimentally using two experimental methods. The first method is based on the filling-box technique introduced by Baines (1983), which allows the plume volume flux to be measured directly. The second method uses PIV and LIF to obtain simultaneous two-dimensional measurements of the velocity and scalar fields within the flow. The results obtained using both techniques reveal that when the plumes are double-diffusive (Rρ > 0) the rate of turbulent entrainment is not constant, with an up to 20% reduction in the value of the entrainment coefficient from the value found for single-diffusive plumes, i.e. plumes with Rρ = 0. The scale of reduction is found to be in direct relation to the source density ratio and is inversely related to the distance travelled by the plume, indicating that double-diffusive effects decrease as the plume evolves. Ultimately, double-diffusive plumes attain self-similarity and resemble the behaviour of single-diffusive plumes. We propose an explanation for the observed reduction in the entrainment coefficient on the basis of differential diffusion hindering large-scale engulfment at the edge of the plume. For the second part, we investigate the effect of double diffusion on the dynamics of initially neutrally-buoyant warm and salty turbulent jets discharged horizontally into stationary cooler freshwater ambient. Jets over a range of source Reynolds numbers and source temperature/salinity combinations are examined. In all cases, we observed sinking jet trajectories and the formation of salt fingers along the lower surface. Increasing the source concentration of both scalar properties led to more pronounced jet sinking trajectories and earlier formation of salt fingers, demonstrating the significance of the double-diffusive processes. We propose that is it the differential double-diffusive fluxes across the jet-ambient turbulent/non-turbulent interfaces that causes the build-up of negative buoyancy and hence the sinking motion. In addition, we make predictions on the onset point of the salt fingers based on the balance between diffusive processes and the jet entrainment, and compare them with the experimental observations.

Subjects/Keywords: Plumes/jets; Double diffusion

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APA (6^th Edition):

Dadonau, M. (2020). The effect of double diffusion on the dynamics of turbulent plumes and jets. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.58635 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.818177

Chicago Manual of Style (16^th Edition):

Dadonau, Maksim. “The effect of double diffusion on the dynamics of turbulent plumes and jets.” 2020. Doctoral Dissertation, University of Cambridge. Accessed January 25, 2021. https://doi.org/10.17863/CAM.58635 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.818177.

MLA Handbook (7^th Edition):

Dadonau, Maksim. “The effect of double diffusion on the dynamics of turbulent plumes and jets.” 2020. Web. 25 Jan 2021.

Vancouver:

Dadonau M. The effect of double diffusion on the dynamics of turbulent plumes and jets. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Jan 25]. Available from: https://doi.org/10.17863/CAM.58635 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.818177.

Council of Science Editors:

Dadonau M. The effect of double diffusion on the dynamics of turbulent plumes and jets. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://doi.org/10.17863/CAM.58635 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.818177

University of Cambridge

11. Debugne, Antoine Louis René. A study of round, line-like and meandering turbulent fountains.

Degree: PhD, 2018, University of Cambridge

URL: https://doi.org/10.17863/CAM.32252 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763640

► The dynamics of different classes of turbulent and miscible fountains are stud- ied: from classic axisymmetric fountains issuing from round sources, to confined fountains propagating… (more)

Subjects/Keywords: 532; Turbulent flows; jets; plumes

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APA (6^th Edition):

Debugne, A. L. R. (2018). A study of round, line-like and meandering turbulent fountains. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.32252 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763640

Chicago Manual of Style (16^th Edition):

Debugne, Antoine Louis René. “A study of round, line-like and meandering turbulent fountains.” 2018. Doctoral Dissertation, University of Cambridge. Accessed January 25, 2021. https://doi.org/10.17863/CAM.32252 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763640.

MLA Handbook (7^th Edition):

Debugne, Antoine Louis René. “A study of round, line-like and meandering turbulent fountains.” 2018. Web. 25 Jan 2021.

Vancouver:

Debugne ALR. A study of round, line-like and meandering turbulent fountains. [Internet] [Doctoral dissertation]. University of Cambridge; 2018. [cited 2021 Jan 25]. Available from: https://doi.org/10.17863/CAM.32252 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763640.

Council of Science Editors:

Debugne ALR. A study of round, line-like and meandering turbulent fountains. [Doctoral Dissertation]. University of Cambridge; 2018. Available from: https://doi.org/10.17863/CAM.32252 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.763640

University of Alberta

12. Ansong, Joseph Kojo. Plumes in stratified environments.

Degree: PhD, Department of Mathematical and Statistical Sciences, 2009, University of Alberta

URL: https://era.library.ualberta.ca/files/2b88qd29r

► This research presents the results of two interrelated sets of experiments examining the dynamics of plumes and fountains in two-layer and continuously stratified environments. The… (more)

▼ This research presents the results of two interrelated sets of experiments examining the dynamics of plumes and fountains in two-layer and continuously stratified environments. The first study examines the evolution of an axisymmetric turbulent fountain in a two-layer stratified environment. Interacting with the interface, the fountain is observed to exhibit three regimes of flow. It may penetrate the interface but nonetheless return to the source where it spreads as a radially propagating gravity current; the return flow may be trapped at the interface where it spreads as a radially propagating intrusion or it may do both. These regimes have been classified using empirically determined regime parameters which govern the relative initial momentum of the fountain and the relative density difference of the fountain and the ambient fluid. The maximum vertical distance travelled by the fountain in a two-layer fluid has been theoretically determined by extending the theory developed for fountains in a homogeneous environment. The theory compares favourably with experimental measurements. We have also developed a theory to analyse the initial speeds of the resulting radial currents. We found that the currents exhibited two different regimes of flow. The second study presents experimental results of the generation of internal gravity waves by a turbulent buoyant plume impinging upon the interface between a uniform density layer of fluid and a linearly stratified layer. The wave field is observed and its properties measured non-intrusively using axisymmetric Schlieren. In particular, we determine the fraction of the energy flux associated with the plume at the neutral buoyancy level that is extracted by the waves. On average, this was found to be approximately 4 per cent. Within the limits of the experimental parameters, the maximum vertical displacement amplitude of waves were found to depend linearly upon the maximum penetration height of the plume beyond the neutral level. The frequency of the waves was found to lie in a narrow range relative to the buoyancy frequency. The results are used to interpret the generation of waves in the atmosphere by convective storms impinging upon the tropopause via the mechanical oscillator effect.

Subjects/Keywords: turbulent; internal; fountains; gravity; stratified; waves; plumes

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APA (6^th Edition):

Ansong, J. K. (2009). Plumes in stratified environments. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/2b88qd29r

Chicago Manual of Style (16^th Edition):

Ansong, Joseph Kojo. “Plumes in stratified environments.” 2009. Doctoral Dissertation, University of Alberta. Accessed January 25, 2021. https://era.library.ualberta.ca/files/2b88qd29r.

MLA Handbook (7^th Edition):

Ansong, Joseph Kojo. “Plumes in stratified environments.” 2009. Web. 25 Jan 2021.

Vancouver:

Ansong JK. Plumes in stratified environments. [Internet] [Doctoral dissertation]. University of Alberta; 2009. [cited 2021 Jan 25]. Available from: https://era.library.ualberta.ca/files/2b88qd29r.

Council of Science Editors:

Ansong JK. Plumes in stratified environments. [Doctoral Dissertation]. University of Alberta; 2009. Available from: https://era.library.ualberta.ca/files/2b88qd29r

Oregon State University

13. Frick, Walter Eugen. The influence of stratification on plume structure.

Degree: MS, Atmospheric Sciences, 1976, Oregon State University

URL: http://hdl.handle.net/1957/28874

► In plume theory it is generally assumed that a plume issuing from a round source maintains a round cross section throughout. The consequences of this… (more)

Subjects/Keywords: Plumes (Fluid dynamics)

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APA (6^th Edition):

Frick, W. E. (1976). The influence of stratification on plume structure. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/28874

Chicago Manual of Style (16^th Edition):

Frick, Walter Eugen. “The influence of stratification on plume structure.” 1976. Masters Thesis, Oregon State University. Accessed January 25, 2021. http://hdl.handle.net/1957/28874.

MLA Handbook (7^th Edition):

Frick, Walter Eugen. “The influence of stratification on plume structure.” 1976. Web. 25 Jan 2021.

Vancouver:

Frick WE. The influence of stratification on plume structure. [Internet] [Masters thesis]. Oregon State University; 1976. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1957/28874.

Council of Science Editors:

Frick WE. The influence of stratification on plume structure. [Masters Thesis]. Oregon State University; 1976. Available from: http://hdl.handle.net/1957/28874

University of Hong Kong

14. Yin, Shi. Merging mechanisms of triple thermal plumes.

Degree: 2016, University of Hong Kong

URL: http://hdl.handle.net/10722/246678

► Thermally induced plumes exist on a wide scale and play an important role in engineering and environmental issues. Understanding dynamic characteristics of triple plumes can… (more)

▼ Thermally induced plumes exist on a wide scale and play an important role in engineering and environmental issues. Understanding dynamic characteristics of triple plumes can greatly improve underlying knowledge of the merging mechanisms in multiple thermal plumes. This thesis presents a series of laboratory water tank modelling on triple thermal plumes in a calm environment. Various flow fields are investigated in a starting period and a period of established flows. The aim of the studies is to provide systematic insights into temporal and spatial triple plume dynamics ranging from the characteristics of small scale turbulence to large-scale coherent structures. In a starting period, examination of the instantaneous velocity fields and corresponding vorticity distribution reveals that a typical temporal plume merging process involves successive self-merging, independent development, global merging, and combination stages. Buoyancy distribution, mutual entrainment, and shear stress from vertical plate jointly determine the normalized temporal plumes penetrations at different sources conditions. Faster plumes penetration usually exists in a concentrated buoyancy force or a spare sources layout with less lateral turbulent mixing. Inherent flow instability leads to three global patterns in triple plumes: right-slanting asymmetrical pattern, left-slanting asymmetrical pattern and central-symmetrical pattern. Proper orthogonal decomposition is used to resolve spatial and temporal features of the coherent structures in each flow pattern. A four-scale flow structure is found, which is made up of global flapping motion, large-scale vortex rings, shear layer vortical structure and small-scale turbulent eddies. A moderate source spacing can significantly improve the large-scale flow instability since the comparative vertical buoyant force and lateral enhanced mutual entrainment. Similar to the coherent structures, the turbulent intensity of the u-component is also determined by both buoyant force and lateral entrainment. The turbulent intensity of the w-component, on the contrary, is dominated by vertical buoyancy force. Both the turbulent intensities and skewness are significantly related to the plume intermittency. Temporal auto-correlation series are quantitatively examined for self-merging points, starting axial points, and axial points in global merging region. It finds that regions with obvious regular periodic motion can exhibit higher flow autocorrelation. For near-source points, the flow fluctuations is mainly dominated by small-scale turbulent motions, and consequently exhibit lower autocorrelation. Independent from the heat rate and configuration of the sources, the power spectra of the half-width points and axial points in the end of merging region all exhibit a -5/3 power law in an inertial subrange followed by a -1 power law decay region. The energy accumulations due to the merging effect, buoyant forces preservation in the near-field, and insufficient turbulent mixing are main reasons for a lower decay…

Subjects/Keywords: Plumes (Fluid dynamics)

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APA (6^th Edition):

Yin, S. (2016). Merging mechanisms of triple thermal plumes. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/246678

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):

Yin, Shi. “Merging mechanisms of triple thermal plumes.” 2016. Thesis, University of Hong Kong. Accessed January 25, 2021. http://hdl.handle.net/10722/246678.

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

MLA Handbook (7^th Edition):

Yin, Shi. “Merging mechanisms of triple thermal plumes.” 2016. Web. 25 Jan 2021.

Vancouver:

Yin S. Merging mechanisms of triple thermal plumes. [Internet] [Thesis]. University of Hong Kong; 2016. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10722/246678.

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

Council of Science Editors:

Yin S. Merging mechanisms of triple thermal plumes. [Thesis]. University of Hong Kong; 2016. Available from: http://hdl.handle.net/10722/246678

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

University of Hong Kong

15. 殷士. Merging mechanisms of triple thermal plumes.

Degree: 2016, University of Hong Kong

URL: http://hdl.handle.net/10722/235864

Subjects/Keywords: Plumes (Fluid dynamics)

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APA (6^th Edition):

殷士. (2016). Merging mechanisms of triple thermal plumes. (Thesis). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/235864

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

Chicago Manual of Style (16^th Edition):

殷士. “Merging mechanisms of triple thermal plumes.” 2016. Thesis, University of Hong Kong. Accessed January 25, 2021. http://hdl.handle.net/10722/235864.

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

MLA Handbook (7^th Edition):

殷士. “Merging mechanisms of triple thermal plumes.” 2016. Web. 25 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

殷士. Merging mechanisms of triple thermal plumes. [Internet] [Thesis]. University of Hong Kong; 2016. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10722/235864.

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

Council of Science Editors:

殷士. Merging mechanisms of triple thermal plumes. [Thesis]. University of Hong Kong; 2016. Available from: http://hdl.handle.net/10722/235864

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

University of Minnesota

16. Petersen, Alec. Laboratory Investigation Of Dispere Multiphase-Turbulent Flows, Dilute & Dense Distributions Of Inertial Particles Settling In Air.

Degree: PhD, Aerospace Engineering and Mechanics, 2020, University of Minnesota

URL: http://hdl.handle.net/11299/215069

► Turbulent multiphase flows are found throughout our universe, all over Earth and in many man-made systems. Despite surrounding us, their dynamics are still in many… (more)

▼ Turbulent multiphase flows are found throughout our universe, all over Earth and in many man-made systems. Despite surrounding us, their dynamics are still in many ways obscure and require further study. These chaotic systems are however quite complicated to both simulate or explore experimentally. In this thesis, we present our laboratory investigation of particle-laden turbulent flows in air. We first focus on the statistical dynamics of dilute multiphase turbulence. Utilizing a zero-mean-flow air turbulence chamber, we drop size-selected solid particles and study their dynamics with particle imaging and tracking velocimetry at multiple resolutions. The carrier flow is simultaneously measured by particle image velocimetry of suspended tracers, allowing the characterization of the interplay between both the dispersed and continuous phases. The turbulence Reynolds number based on the Taylor microscale ranges from 200 – 500, while the particle Stokes number based on the Kolmogorov scale varies between O(1) and O(10). Clustering is confirmed to be most intense for Stokes ≈ 1 , but it extends over larger scales for heavier particles. Individual clusters form a hierarchy of self-similar, fractal-like objects, preferentially aligned with gravity and sizes that can reach the integral scale of the turbulence. Remarkably, the settling velocity of Stokes ≈ 1 particles can be several times larger than the still-air terminal velocity, and the clusters can fall even faster. This is caused by downward fluid fluctuations preferentially sweeping the particles, and we propose that this mechanism is influenced by both large and small scales of the turbulence. The particle-fluid slip velocities show large variance, and both the instantaneous particle Reynolds number and drag coefficient can greatly differ from their nominal values. Finally, for sufficient loadings, the particles generally augment the small-scale fluid velocity fluctuations, which however may account for a limited fraction of the turbulent kinetic energy. We also investigate denser particle-laden flows, specifically plumes driven by the downward buoyancy of inertial particles. With similar tools, we conduct two experiments: one to capture the particle-phase behavior and another to measure the ambient air velocity. Our first focus is on the assumption of self-similarity, which unlike single-phase plumes is not a trivial assumption. We also characterize the mean plume properties observed: the particle-phase velocity and the plume spread comparing their evolution with axial distance from the plume source. From our measurements of the ambient air flow we calculate the entrainment velocity into the particle-laden plumes and using the time-averaged value we estimate the entrainment coefficient along the plume. We find a relatively stable entrainment rate, as expected in the assumption used to formulate many integral plume models. Lastly we compared our experimental results to single and multiphase plume models with the same initial conditions as our experiments. Our…

Subjects/Keywords: clustering; multiphase; particle-laden; plumes; settling; turbulence

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APA (6^th Edition):

Petersen, A. (2020). Laboratory Investigation Of Dispere Multiphase-Turbulent Flows, Dilute & Dense Distributions Of Inertial Particles Settling In Air. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/215069

Chicago Manual of Style (16^th Edition):

Petersen, Alec. “Laboratory Investigation Of Dispere Multiphase-Turbulent Flows, Dilute & Dense Distributions Of Inertial Particles Settling In Air.” 2020. Doctoral Dissertation, University of Minnesota. Accessed January 25, 2021. http://hdl.handle.net/11299/215069.

MLA Handbook (7^th Edition):

Petersen, Alec. “Laboratory Investigation Of Dispere Multiphase-Turbulent Flows, Dilute & Dense Distributions Of Inertial Particles Settling In Air.” 2020. Web. 25 Jan 2021.

Vancouver:

Petersen A. Laboratory Investigation Of Dispere Multiphase-Turbulent Flows, Dilute & Dense Distributions Of Inertial Particles Settling In Air. [Internet] [Doctoral dissertation]. University of Minnesota; 2020. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/11299/215069.

Council of Science Editors:

Petersen A. Laboratory Investigation Of Dispere Multiphase-Turbulent Flows, Dilute & Dense Distributions Of Inertial Particles Settling In Air. [Doctoral Dissertation]. University of Minnesota; 2020. Available from: http://hdl.handle.net/11299/215069

University of Sydney

17. Huang, Danlan. Entrainment in Pulsing plumes .

Degree: 2019, University of Sydney

URL: http://hdl.handle.net/2123/21168

► The main contribution of this work is to investigate the entrainment in plumes with constant and time-varying source conditions experimentally. The study aims to build… (more)

▼ The main contribution of this work is to investigate the entrainment in plumes with constant and time-varying source conditions experimentally. The study aims to build up an experiment rig to conduct the bulk entrainment measurement in plumes. Secondly, the study aims to examine the influences the forcing frequency and amplitude have on entrainment in pulsing plumes, where the flow rate, momentum and buoyancy are sinusoidal functions of time. Finally, the study aims to investigate the validity of the integral model for pure plumes with constant source conditions established by Morton et al. (Proc R Soc Lond A 234(1196):1–23, 1956) in pulsing plumes, as well as the virtual origin correction method for lazy plumes proposed by Hunt and Kaye (J Fluid Mech 435:377–396, 2001) in both constant source plumes and pulsing plumes. Experiments were conducted to verify the pulses in pulsing plumes. Plumes are formed by issuing saline fluid downwards into a less dense uniform environment from a round pipe. The pulsing flow is generated by a programmable ISMATEC gear pump. The evolution of the pulses in pulsing plumes is revealed by applying the light-attenuation method with high frequency imaging. Pulsing is shown to affect the development of the flow, as the forcing frequency at the source dominates the frequency of the flow downstream. To study the bulk entrainment in pulsing plumes, turbulent axisymmetric lazy plumes with constant source conditions were examined initially. The bulk dilution and entrainment measurements were achieved by using the experimental approach of Hunt and Kaye (J Fluid Mech 435:377–396, 2001). The integral relationship for the local flow rate Q(z) and local momentum M(z) from the model established by Morton et al. (Proc R Soc Lond A 234(1196):1–23, 1956) for constant source plumes was used to determine the average local entrainment. Experiments with pulsing plumes were carried out with a flow rate amplitude ranged from 33% to 80% and the non-dimensional frequency - Strouhal number 〖St=fD/U〗_0 ranged from 0.012 to 1.2, where the maximum frequency f of this pulsing plume is in the order of the eddy turnover time scale at the source, D is the source diameter and U_0 is the average velocity at the source. The entrainment coefficient was determined in pulsing plumes and was found within the range of the entrainment values in plumes with constant source conditions. The influence of the forcing frequency and amplitude is examined, and found to be very small over the entire range of source conditions considered. The virtual origin correction method of Hunt and Kaye (J Fluid Mech 435:377–396, 2001) is found to give a reasonably good estimation in predicting the virtual origin in pulsing plumes. The results suggest that the local entrainment velocity is proportional to the time-average local plume velocity even in pulsing plumes where the local velocity is varying with time. This supports the application of the integral model of Morton et al. (Proc R Soc Lond A 234(1196):1–23, 1956) to building…

Subjects/Keywords: Entrainment; plumes; turbulent mixing; time-varying source

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APA (6^th Edition):

Huang, D. (2019). Entrainment in Pulsing plumes . (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/21168

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):

Huang, Danlan. “Entrainment in Pulsing plumes .” 2019. Thesis, University of Sydney. Accessed January 25, 2021. http://hdl.handle.net/2123/21168.

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

MLA Handbook (7^th Edition):

Huang, Danlan. “Entrainment in Pulsing plumes .” 2019. Web. 25 Jan 2021.

Vancouver:

Huang D. Entrainment in Pulsing plumes . [Internet] [Thesis]. University of Sydney; 2019. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/2123/21168.

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

Council of Science Editors:

Huang D. Entrainment in Pulsing plumes . [Thesis]. University of Sydney; 2019. Available from: http://hdl.handle.net/2123/21168

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

University of Alberta

18. Diep, John Khai Quang. Flow control reduction of smokestack downwash.

Degree: MS, Department of Mechanical Engineering, 2001, University of Alberta

URL: https://era.library.ualberta.ca/files/vd66w260g

Subjects/Keywords: Plumes (Fluid dynamics); Downwash (Aerodynamics); Smoke plumes.

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APA (6^th Edition):

Diep, J. K. Q. (2001). Flow control reduction of smokestack downwash. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/vd66w260g

Chicago Manual of Style (16^th Edition):

Diep, John Khai Quang. “Flow control reduction of smokestack downwash.” 2001. Masters Thesis, University of Alberta. Accessed January 25, 2021. https://era.library.ualberta.ca/files/vd66w260g.

MLA Handbook (7^th Edition):

Diep, John Khai Quang. “Flow control reduction of smokestack downwash.” 2001. Web. 25 Jan 2021.

Vancouver:

Diep JKQ. Flow control reduction of smokestack downwash. [Internet] [Masters thesis]. University of Alberta; 2001. [cited 2021 Jan 25]. Available from: https://era.library.ualberta.ca/files/vd66w260g.

Council of Science Editors:

Diep JKQ. Flow control reduction of smokestack downwash. [Masters Thesis]. University of Alberta; 2001. Available from: https://era.library.ualberta.ca/files/vd66w260g

East Carolina University

19. Vogel, Thomas J. Prisons and Pollutant Plumes: A Spatial Analysis of LULU Coexistence.

Degree: MS, MA-Geography, 2018, East Carolina University

URL: http://hdl.handle.net/10342/6963

► Prison facilities and other locally unwanted land uses (LULUs) lead to a number of health, environmental, and socio-economic impacts on the local community. Prison facilities… (more)

▼ Prison facilities and other locally unwanted land uses (LULUs) lead to a number of health, environmental, and socio-economic impacts on the local community. Prison facilities and other LULUs tend to be sited in locations where less wealth and social capital are available to contest their installation. This causes an increased burden on the local population. The purpose of this study is to address the relationship between prisons, other LULUs, and the health impact on the surrounding community using interdisciplinary approaches including regression analysis, plume analysis, and geographic information science. Using a combination of the U.S. Environmental Protection Agency's (EPA) Toxic Release Inventory (TRI), a prison facilities database, and available census data, plume modeling and risk assessment were performed for North Carolina, Pennsylvania, and Texas. The chemicals evaluated are benzene, toluene, ethylbenzene, and xylene (BTEX), known respiratory irritants. The Areal Locations of Hazardous Atmospheres (ALOHA) plume dispersion model was used in this analysis. Risk assessment was performed using an R coded regression analysis evaluating socio-demographic variables, health variables, and prison and TRI facilities to output an air quality value based on the EPA's Air Quality Index (AQI). Using the air quality index that accounts for both physical and socioeconomic characteristics allowed the results to be compared across states and minimized the risk of bias from urban-rural divides. Location analysis was completed using a combination of multinomial regression and probability analysis to assess the relationship between the location of prisons and the location of other LULUs. The results of this analysis were inconclusive however it provided insight into the relationship between income and placement of both prisons and TRI facilities. A Poisson distribution was performed to evaluate the likelihood of TRI facilities being placed in counties with and without prisons as well. This analysis indicated that counties with prisons have a higher probability of receiving TRI facilities. Counties in Texas, North Carolina, and Pennsylvania were selected using a linear regression analysis to assess the relationship between socioeconomic factors and the annual AQI for each county. Income, the percent of housing that is renter occupied, the percent of the population employed, and the percent of asthma related Medicare expenses are the socioeconomic factors most related to air quality. In Texas, the highest modeled AQI was present in the county with a prison facility while in Pennsylvania and North Carolina, the non-prison county yielded the highest modeled AQI. The difference between these modeled AQIs was small for both Pennsylvania and North Carolina; however, in Texas the difference between values was approximately 50 AQI points. Plume analysis was performed using the combined stack and fugitive air emissions for TRI facilities as the emissions source. The plume dispersion models indicated that the BTEX facilities considered… Advisors/Committee Members: Montz, Burrell Elizabeth (advisor).

Subjects/Keywords: GIS; pollutant plumes; toxins; air quality; Environmental toxicology; Prisons – Environmental aspects; Plumes (Fluid dynamics); Spatial analysis (Statistics)

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APA (6^th Edition):

Vogel, T. J. (2018). Prisons and Pollutant Plumes: A Spatial Analysis of LULU Coexistence. (Masters Thesis). East Carolina University. Retrieved from http://hdl.handle.net/10342/6963

Chicago Manual of Style (16^th Edition):

Vogel, Thomas J. “Prisons and Pollutant Plumes: A Spatial Analysis of LULU Coexistence.” 2018. Masters Thesis, East Carolina University. Accessed January 25, 2021. http://hdl.handle.net/10342/6963.

MLA Handbook (7^th Edition):

Vogel, Thomas J. “Prisons and Pollutant Plumes: A Spatial Analysis of LULU Coexistence.” 2018. Web. 25 Jan 2021.

Vancouver:

Vogel TJ. Prisons and Pollutant Plumes: A Spatial Analysis of LULU Coexistence. [Internet] [Masters thesis]. East Carolina University; 2018. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10342/6963.

Council of Science Editors:

Vogel TJ. Prisons and Pollutant Plumes: A Spatial Analysis of LULU Coexistence. [Masters Thesis]. East Carolina University; 2018. Available from: http://hdl.handle.net/10342/6963

20. Kosonen, Risto. The Effect of Thermal Plumes on the Performance of Ventilated Ceilings in Commercial Kitchens.

Degree: 2006, Helsinki University of Technology

URL: http://lib.tkk.fi/Diss/2006/isbn951228233X/

► The efficiency of the exhaust system is especially emphasised with a ventilated ceiling system where the exhaust is located at ceiling level. The removal efficiency… (more)

▼ The efficiency of the exhaust system is especially emphasised with a ventilated ceiling system where the exhaust is located at ceiling level. The removal efficiency of the total system must be guaranteed and the spread of impurities throughout the kitchen should be prevented. At the moment, none of the existing calculation standards are specially tailored for a kitchen ceiling environment. In the normal design practice, empirical knowledge of the existing installations together with heat load based calculation has been used for airflow rate determination. The starting point for this research was to study the effect of the thermal plumes and supply air systems on the efficiency of a ventilated ceiling. A special consideration was to analyze the effect of a capture jet on the contaminant removal efficiency. In that capture air concept, the air jet is projected horizontally across the ceiling, which helps to direct heat and air impurities towards the exhaust. From the practical point of view, the objective of this study was to develop a design process to compute the required air flow rate more accurately. In this study, the measured convection flows of kitchen appliances during idle and cooking modes were compared with the generic plume equation in which the virtual origin is constant. The generic plume equation derived in the region of complete flow similarity is not fully valid in the intermediate zone (0.8-2.0 m from appliances). Still, it is possible to reach a reasonable accuracy for practical applications with the adjusted virtual origin. The cooking process does not have any significant effect on the velocity and temperature distribution of the convection flow. The reason for this is that the mass flow rate of water during boiling is small compared with the induced air flow rate and therefore does not have a significant effect on the convection flow. Thus, the actual convection load and the product specific virtual origin can describe the plume during the cooking process. In the previous studies of thermal plumes, the velocity and temperature distribution factors are much higher than in the present study. In addition, the entrainment factors of the previous studies are much smaller than in this study. The measurements indicate that the heat gain has a significant effect on the spreading angle and the entrainment factor close to the heat source. The plumes with high heat gains are narrower and the convection flow induces more room air than the previous studies have pointed out. The efficiency of the exhaust system can be improved with a small capture jet installed at the ceiling surface. Both the measurement and simulated data give lower contaminant levels when the capture jet was introduced. The plume equation gives a platform to calculate the air flow rate that is theoretically required to remove the convective heat output of the appliance block. In this study, the flush-out factor of the supply air on the theoretical plume equation was derived for the centralized capture jet concept. For practical design… Advisors/Committee Members: Helsinki University of Technology, Department of Mechanical Engineering, Laboratory of Heating, Ventilating and Air Conditioning.

Subjects/Keywords: thermal plumes; commercial kitchen; capture jet; ventilation efficiency; displacement ventilation

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APA (6^th Edition):

Kosonen, R. (2006). The Effect of Thermal Plumes on the Performance of Ventilated Ceilings in Commercial Kitchens. (Thesis). Helsinki University of Technology. Retrieved from http://lib.tkk.fi/Diss/2006/isbn951228233X/

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):

Kosonen, Risto. “The Effect of Thermal Plumes on the Performance of Ventilated Ceilings in Commercial Kitchens.” 2006. Thesis, Helsinki University of Technology. Accessed January 25, 2021. http://lib.tkk.fi/Diss/2006/isbn951228233X/.

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

MLA Handbook (7^th Edition):

Kosonen, Risto. “The Effect of Thermal Plumes on the Performance of Ventilated Ceilings in Commercial Kitchens.” 2006. Web. 25 Jan 2021.

Vancouver:

Kosonen R. The Effect of Thermal Plumes on the Performance of Ventilated Ceilings in Commercial Kitchens. [Internet] [Thesis]. Helsinki University of Technology; 2006. [cited 2021 Jan 25]. Available from: http://lib.tkk.fi/Diss/2006/isbn951228233X/.

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

Council of Science Editors:

Kosonen R. The Effect of Thermal Plumes on the Performance of Ventilated Ceilings in Commercial Kitchens. [Thesis]. Helsinki University of Technology; 2006. Available from: http://lib.tkk.fi/Diss/2006/isbn951228233X/

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

University of Alberta

21. McMillan, Justine M. Axisymmetric internal solitary waves launched by river plumes.

Degree: MS, Department of Physics, 2011, University of Alberta

URL: https://era.library.ualberta.ca/files/p2676w69r

► The generation and evolution of internal solitary waves by intrusive gravity currents and river plumes are examined in an axisymmetric geometry by way of theory,… (more)

Subjects/Keywords: river plumes; solitary waves; internal waves; intrusive gravity currents

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APA (6^th Edition):

McMillan, J. M. (2011). Axisymmetric internal solitary waves launched by river plumes. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/p2676w69r

Chicago Manual of Style (16^th Edition):

McMillan, Justine M. “Axisymmetric internal solitary waves launched by river plumes.” 2011. Masters Thesis, University of Alberta. Accessed January 25, 2021. https://era.library.ualberta.ca/files/p2676w69r.

MLA Handbook (7^th Edition):

McMillan, Justine M. “Axisymmetric internal solitary waves launched by river plumes.” 2011. Web. 25 Jan 2021.

Vancouver:

McMillan JM. Axisymmetric internal solitary waves launched by river plumes. [Internet] [Masters thesis]. University of Alberta; 2011. [cited 2021 Jan 25]. Available from: https://era.library.ualberta.ca/files/p2676w69r.

Council of Science Editors:

McMillan JM. Axisymmetric internal solitary waves launched by river plumes. [Masters Thesis]. University of Alberta; 2011. Available from: https://era.library.ualberta.ca/files/p2676w69r

University of Michigan

22. Dai, Zhongtao. The structure of round buoyant turbulent plumes.

Degree: PhD, Pure Sciences, 1995, University of Michigan

URL: http://hdl.handle.net/2027.42/129597

► An experimental and theoretical study of round buoyant turbulent plumes in still and unstratified environment was conducted, emphasizing self-preserving conditions. The experiments involved downward flowing… (more)

▼ An experimental and theoretical study of round buoyant turbulent plumes in still and unstratified environment was conducted, emphasizing self-preserving conditions. The experiments involved downward flowing round negatively-buoyant turbulent plumes created by injecting carbon dioxide and sulfur hexafluoride into still and unstratified air. The mixture fraction and velocity properties were measured using laser-induced iodine fluorescence (LIF) and laser-Doppler velocimetry (LDV), respectively, while the combined mixture fraction/velocity properties were measured using combined LIF/LDV. The present measurements were exploited to evaluate k-ε-g and Reynolds stress models of buoyant turbulent flows, by direct comparisons between model approximations and measurements. In addition, predictions of the models for the self-preserving region of round buoyant turbulent plumes were compared with measurements in order to assess overall model performance. The self-preserving conditions of round buoyant turbulent plumes were observed relatively far from the source under the present test conditions: (x - x₀)/d = 87∼151 and (x - x₀)/{\it l}_M =12∼43. Present measurements yielded distributions of mean mixture fractions and streamwise velocities in the self-preserving region that were up to 40% narrower, with appropriately scaled values near the axis up to 30% larger than earlier measurements in the literature, indicating that the earlier measurements actually involved transitional plumes. Large mixture fraction fluctuations and turbulence mass fluxes were observed in the self-preserving region due to the strong correlation between mixture fraction and velocity fluctuations. However, present measurements of velocity fluctuations and the Reynolds stress were similar to round nonbuoyant turbulent jets. Other properties reported include: probability density functions and temporal power spectral densities of mixture fraction and velocity fluctuations, integral time and length scales, two-point correlations of mixture fractions, and high-order moments of velocities and combined mixture fraction/velocity statistics. In addition, turbulence kinetic energy dissipation, mixture fraction variance dissipation, pressure/strain and pressure/mixture-fraction-fluctuation-gradient correlations were obtained from budget analysis. Evaluations of the widely used k-ε-g turbulence model revealed that while mean properties were predicted reasonably well, there were deficiencies of corresponding turbulence properties. For example, streamwise turbulence and momentum fluxes exhibited countergradient diffusion. In addition, the turbulent Prandtl/Schmidt number, the ratio of the characteristic velocity and mixture fraction time scales and the coefficient of the radial gradient diffusion approximation for the Reynolds stress, all exhibited variations across the flow rather than remaining constant as prescribed by k-ε-g model. Evaluations of the Reynolds stress model also revealed some… Advisors/Committee Members: Faeth, Gerard M. (advisor).

Subjects/Keywords: Buoyant; Plumes; Round; Structure; Turbulent

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APA (6^th Edition):

Dai, Z. (1995). The structure of round buoyant turbulent plumes. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/129597

Chicago Manual of Style (16^th Edition):

Dai, Zhongtao. “The structure of round buoyant turbulent plumes.” 1995. Doctoral Dissertation, University of Michigan. Accessed January 25, 2021. http://hdl.handle.net/2027.42/129597.

MLA Handbook (7^th Edition):

Dai, Zhongtao. “The structure of round buoyant turbulent plumes.” 1995. Web. 25 Jan 2021.

Vancouver:

Dai Z. The structure of round buoyant turbulent plumes. [Internet] [Doctoral dissertation]. University of Michigan; 1995. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/2027.42/129597.

Council of Science Editors:

Dai Z. The structure of round buoyant turbulent plumes. [Doctoral Dissertation]. University of Michigan; 1995. Available from: http://hdl.handle.net/2027.42/129597

University of Manchester

23. Munoz Castillo, Cristian. A midlatitude climatology of 200- and 500-hPa cut-off lows and its usefulness in categorizing cut-off lows in central Chile.

Degree: 2020, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:323158

► In this thesis, a midlatitude climatology of cut-off lows was done and then used for studying the synoptic-scale patterns associated with extreme rainfall rate events… (more)

Subjects/Keywords: Atmospheric dynamics; cut-off lows; meteorology; moisture plumes; climatology

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APA (6^th Edition):

Munoz Castillo, C. (2020). A midlatitude climatology of 200- and 500-hPa cut-off lows and its usefulness in categorizing cut-off lows in central Chile. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:323158

Chicago Manual of Style (16^th Edition):

Munoz Castillo, Cristian. “A midlatitude climatology of 200- and 500-hPa cut-off lows and its usefulness in categorizing cut-off lows in central Chile.” 2020. Doctoral Dissertation, University of Manchester. Accessed January 25, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:323158.

MLA Handbook (7^th Edition):

Munoz Castillo, Cristian. “A midlatitude climatology of 200- and 500-hPa cut-off lows and its usefulness in categorizing cut-off lows in central Chile.” 2020. Web. 25 Jan 2021.

Vancouver:

Munoz Castillo C. A midlatitude climatology of 200- and 500-hPa cut-off lows and its usefulness in categorizing cut-off lows in central Chile. [Internet] [Doctoral dissertation]. University of Manchester; 2020. [cited 2021 Jan 25]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:323158.

Council of Science Editors:

Munoz Castillo C. A midlatitude climatology of 200- and 500-hPa cut-off lows and its usefulness in categorizing cut-off lows in central Chile. [Doctoral Dissertation]. University of Manchester; 2020. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:323158

Texas A&M University

24. Cole, Kelly Lynne. A Numerical Study of the Mid-field River Plume.

Degree: PhD, Oceanography, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/152637

► Idealized and realistic simulations of the Merrimack River plume on the east coast of the U.S. are performed using the Regional Ocean Modeling System (ROMS).… (more)

Subjects/Keywords: coastal oceanography; numerical modeling; buoyancy driven flow; river plumes

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APA (6^th Edition):

Cole, K. L. (2014). A Numerical Study of the Mid-field River Plume. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/152637

Chicago Manual of Style (16^th Edition):

Cole, Kelly Lynne. “A Numerical Study of the Mid-field River Plume.” 2014. Doctoral Dissertation, Texas A&M University. Accessed January 25, 2021. http://hdl.handle.net/1969.1/152637.

MLA Handbook (7^th Edition):

Cole, Kelly Lynne. “A Numerical Study of the Mid-field River Plume.” 2014. Web. 25 Jan 2021.

Vancouver:

Cole KL. A Numerical Study of the Mid-field River Plume. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1969.1/152637.

Council of Science Editors:

Cole KL. A Numerical Study of the Mid-field River Plume. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/152637

25. Wichers, Sacha. Verification of numerical models for hydrothermal plume water through field measurements at TAG.

Degree: 2005, MIT and Woods Hole Oceanographic Institution

URL: http://hdl.handle.net/1912/1640

► Hydrothermal vents discharge superheated, mineral rich water into our oceans, thereby providing a habitat for exotic chemosynthetic biological communities. Hydrothermal fluids are convected upwards until… (more)

Subjects/Keywords: Hydrothermal vents; Tidal currents; Plumes

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APA (6^th Edition):

Wichers, S. (2005). Verification of numerical models for hydrothermal plume water through field measurements at TAG. (Thesis). MIT and Woods Hole Oceanographic Institution. Retrieved from http://hdl.handle.net/1912/1640

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):

Wichers, Sacha. “Verification of numerical models for hydrothermal plume water through field measurements at TAG.” 2005. Thesis, MIT and Woods Hole Oceanographic Institution. Accessed January 25, 2021. http://hdl.handle.net/1912/1640.

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

MLA Handbook (7^th Edition):

Wichers, Sacha. “Verification of numerical models for hydrothermal plume water through field measurements at TAG.” 2005. Web. 25 Jan 2021.

Vancouver:

Wichers S. Verification of numerical models for hydrothermal plume water through field measurements at TAG. [Internet] [Thesis]. MIT and Woods Hole Oceanographic Institution; 2005. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1912/1640.

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

Council of Science Editors:

Wichers S. Verification of numerical models for hydrothermal plume water through field measurements at TAG. [Thesis]. MIT and Woods Hole Oceanographic Institution; 2005. Available from: http://hdl.handle.net/1912/1640

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

26. Korenaga, Jun. Magmatism and dynamics of continental breakup in the presence of a mantle plume.

Degree: 2000, MIT and Woods Hole Oceanographic Institution

URL: http://hdl.handle.net/1912/4079

► This thesis studies the dynamics of mantle melting during continental breakups by geophysical, geochemical, and numerical analyses. The first part focuses on the mantle melting… (more)

▼ This thesis studies the dynamics of mantle melting during continental breakups by geophysical, geochemical, and numerical analyses. The first part focuses on the mantle melting and crustal accretion processes during the formation of the Southeast Greenland margin, on the basis of deep-crustal seismic data. A new seismic tomographic method is developed to jointly invert refraction and reflection travel times for a compressional velocity structure, and a long-wavelength structure with strong lateral heterogeneity is successfully recovered, including 30- to 15-km-thick igneous crust within a 150-km-wide continent-ocean transition zone. A nonlinear Monte Carlo analysis is also conducted to establish the absolute uncertainty of model parameters. The derived crustal structure is first used to resolve the origin of a margin gravity high, with new inversion schemes using both seismic and gravity constraints. Density anomalies producing the gravity high seem to be confined within the upper crust, not in the lower crust as suggested for other volcanic margins. A new robust framework is then developed for the petrological interpretation of the velocity structure of igneous crust, and the thick igneous crust formed at the continent-ocean transition zone is suggested to have resulted from vigorous active upwelling of mantle with only somewhat elevated potential temperature. In the second part, the nature of mantle melting during the formation of the North Atlantic igneous province is studied on the basis of the major element chemistry of erupted lavas. A new fractionation correction scheme based on the Ni concentrations of mantle olivine is used to estimate primary melt compositions, which suggest that this province is characterized by a large degree of major element source heterogeneity. In the third part, the nature of preexisting sublithospheric convection is investigated by a series of finite element analyses, because the strength of such convection is important to define the "normal" state of mantle, the understanding of which is essential to identify any anomalous behavior of mantle such as a mantle plume. The results suggest that small-scale convection is likely in normal asthenosphere, and that the upwelling velocity in such convection is on the order of 1-10 cm/yr.

Subjects/Keywords: Continental margins; Mantle plumes

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APA (6^th Edition):

Korenaga, J. (2000). Magmatism and dynamics of continental breakup in the presence of a mantle plume. (Thesis). MIT and Woods Hole Oceanographic Institution. Retrieved from http://hdl.handle.net/1912/4079

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):

Korenaga, Jun. “Magmatism and dynamics of continental breakup in the presence of a mantle plume.” 2000. Thesis, MIT and Woods Hole Oceanographic Institution. Accessed January 25, 2021. http://hdl.handle.net/1912/4079.

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

MLA Handbook (7^th Edition):

Korenaga, Jun. “Magmatism and dynamics of continental breakup in the presence of a mantle plume.” 2000. Web. 25 Jan 2021.

Vancouver:

Korenaga J. Magmatism and dynamics of continental breakup in the presence of a mantle plume. [Internet] [Thesis]. MIT and Woods Hole Oceanographic Institution; 2000. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1912/4079.

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

Council of Science Editors:

Korenaga J. Magmatism and dynamics of continental breakup in the presence of a mantle plume. [Thesis]. MIT and Woods Hole Oceanographic Institution; 2000. Available from: http://hdl.handle.net/1912/4079

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

27. Saal, Alberto E. Evaluating mantle and crustal processes using isotope geochemistry.

Degree: 1999, MIT and Woods Hole Oceanographic Institution

URL: http://hdl.handle.net/1912/4095

► Geochemical studies are fundamental for understanding how the dynamic Earth works and evolves. These studies place constraints on the composition, formation, age, distribution, evolution and… (more)

▼ Geochemical studies are fundamental for understanding how the dynamic Earth works and evolves. These studies place constraints on the composition, formation, age, distribution, evolution and scales of geochemically distinct reservoirs such as the Earth's crust, mantle and core. In this dissertation the strategy has been to work on a broad range of topics to evaluate crustal and mantle processes. This study presents Re-Os systematics to constrain the composition, formation and age of the lower continental crust and the mantle lithosphere, examines melt inclusion from oceanic island basalts to evaluate the scale of the mantle heterogeneities, and uses U-series isotope to constrain geodynamic parameters, such as the upwelling velocities and porosities of mantle plumes. The lower continental crust plays a pivotal role in understanding the composition and evolution of the continental crust and the petrogenesis of continental basalts. This chapter presents Re/Os isotope measurements which allow us to further our understanding of these problems. Two well-characterized suites of lower crustal xenoliths from Northern Queensland, Australia, which have average major and trace element compositions similar to bulk lower crust, were analyzed for Re/Os isotope systematics. From this data, we infer that the lower crust has 1 to 2 times as much as, about half of the Re and is less radiogenic in 187OS/88OS than the upper continental crust. Our data show that assimilation and fractional crystallization (AFC) are important processes in the formation of the lower crust and lead to dramatic changes in the Os isotopic composition of basalts that pond andfractionate there. Because of this, the Re-Os system cannot be relied upon to yield accurate mantle extraction ages for continental rocks. Chapter 2 examines the Re-Os isotopic composition of the Horoman massif, Japan. These data indicate that the Os isotope composition is controlled by the Re content, through radiogenic ingrowth, while the Re content is governed by the extent of depletion in "basaltic component" of the ultramafic rocks. Re-Os systematics suggest that depletion model ages of ≈ 1.8 Ga represent the age of the melting event. The colinearity between mafic and ultramafic rocks in the Re-Os isochron diagram defines an apparent age of ≈ 1Ga.. The similar "ages" determined by Re-Os and Sm-Nd isotopes and the high Re/Os ratios in the most fertile peridotites plotting to the right of the geochron, indicate that the mafic layers and the ultramafic rocks are genetically related by a refertilization process which took place ≈ 1 Ga ago. The Re-Os systematics for' other ophiolitic massifs indicate that refertilization of the lithospheric mantle seems to be a more Widespread process than previously thought. Previous studies have suggested that melting processes are responsible for the trace element variability observed in olivine-hosted basaltic melt inclusions. Melt inclusions from four individual lava samples representing three mantle end-members HIMU,…

Subjects/Keywords: Isotope geology; Mantle plumes

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APA (6^th Edition):

Saal, A. E. (1999). Evaluating mantle and crustal processes using isotope geochemistry. (Thesis). MIT and Woods Hole Oceanographic Institution. Retrieved from http://hdl.handle.net/1912/4095

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):

Saal, Alberto E. “Evaluating mantle and crustal processes using isotope geochemistry.” 1999. Thesis, MIT and Woods Hole Oceanographic Institution. Accessed January 25, 2021. http://hdl.handle.net/1912/4095.

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

MLA Handbook (7^th Edition):

Saal, Alberto E. “Evaluating mantle and crustal processes using isotope geochemistry.” 1999. Web. 25 Jan 2021.

Vancouver:

Saal AE. Evaluating mantle and crustal processes using isotope geochemistry. [Internet] [Thesis]. MIT and Woods Hole Oceanographic Institution; 1999. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1912/4095.

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

Council of Science Editors:

Saal AE. Evaluating mantle and crustal processes using isotope geochemistry. [Thesis]. MIT and Woods Hole Oceanographic Institution; 1999. Available from: http://hdl.handle.net/1912/4095

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

28. Little, Sarah A. Fluid flow and sound generation at hydrothermal vent fields.

Degree: 1988, MIT and Woods Hole Oceanographic Institution

URL: http://hdl.handle.net/1912/4963

► Several experiments are presented in this thesis which examine methods to measure and monitor fluid flow from hydrothermal vent fields. Simultaneous velocity, temperature, and conductivity… (more)

▼ Several experiments are presented in this thesis which examine methods to measure and monitor fluid flow from hydrothermal vent fields. Simultaneous velocity, temperature, and conductivity data were collected in the convective flow emanating from a hydrothermal vent field located at 10°S6'N, 103° 41'W on the East Pacific rise. The horizontal profiles obtained indicate that the flow field approaches an ideal plume in the temperature and velocity distribution. Such parameters as total heat flow and maximum plume height can be estimated using either the velocity or the temperature information. The results of these independent calculations are in close agreement, yielding a total heat flow from this vent site of 3.7 ± 0.8 MW and a maximum height of 150±10 m. The nonlinear effects of large temperature variations on heat capacity and volume changes slightly alter the calculations applied to obtain these values. In Guaymas Basin, a twelve day time series of temperature data was collected from a point three centimeters above a diffuse hydrothermal flow area. Using concurrent tidal gauge data from the town of Guaymas it is shown that the effects of tidar currents can be strong enough to dominate the time variability of a temperature signal at a fixed point in hydrothermal flow and are a plausible explanation for the variations seen in the Guaymas Basin temperature data. Theoretical examination of hot, turbulent, buoyant jets exiting from hydrothermal chimneys revealed acoustic source mechanisms capable of producing sound at levels higher than ambient ocean noise. Pressure levels and frequency generated by hydrothermal jets are dependent on chimney dimensions, fluid velocity and temperature and therefore can be used to monitor changes in these parameters over time. A laboratory study of low Mach number jet noise and amplification by flow inhomogeneities confirmed theoretical predictions for homogeneous jet noise power and frequency. The increase in power due to convected flow inhomogeneities, however, was lower in the near field than expected. Indirect evidence of hydrothermal sound fields (Reidesel et al., 1982; Bibee and Jacobson, 1986) showing anomalous high power and low frequency noise associated with vents is due to processes other than jet noise. On Axial Seamount, Juan de Fuca Ridge, high quality acoustic noise measurements were obtained by two hydrophones located 3 m and 40 m from an active hydrothermal vent, in an effort to determine the feasibility of monitoring hydrothermal vent activity through floW noise generation. Most of the noise field could be attributed to ambient ocean noise sources of microseisms, distant shipping and weather, punctuated by local ships and biological sources. Water/rock interface waves of local origin, were detected which showed high pressure amplitudes near the seafloor and, decaying with vertical distance, produced low pressures at 40 m above the bottom. Detection of vent signals was hampered by unexpected spatial non- stationarity due to…

Subjects/Keywords: Hydrothermal vents; Plumes; Underwater acoustics

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APA (6^th Edition):

Little, S. A. (1988). Fluid flow and sound generation at hydrothermal vent fields. (Thesis). MIT and Woods Hole Oceanographic Institution. Retrieved from http://hdl.handle.net/1912/4963

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):

Little, Sarah A. “Fluid flow and sound generation at hydrothermal vent fields.” 1988. Thesis, MIT and Woods Hole Oceanographic Institution. Accessed January 25, 2021. http://hdl.handle.net/1912/4963.

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

MLA Handbook (7^th Edition):

Little, Sarah A. “Fluid flow and sound generation at hydrothermal vent fields.” 1988. Web. 25 Jan 2021.

Vancouver:

Little SA. Fluid flow and sound generation at hydrothermal vent fields. [Internet] [Thesis]. MIT and Woods Hole Oceanographic Institution; 1988. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1912/4963.

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

Council of Science Editors:

Little SA. Fluid flow and sound generation at hydrothermal vent fields. [Thesis]. MIT and Woods Hole Oceanographic Institution; 1988. Available from: http://hdl.handle.net/1912/4963

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

Oregon State University

29. Hoevekamp, Tobias B. Buoyant flow simulation programs with interactive graphics.

Degree: MS, Mechanical Engineering, 1995, Oregon State University

URL: http://hdl.handle.net/1957/35524

Subjects/Keywords: Plumes (Fluid dynamics) – Computer simulation

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

APA (6^th Edition):

Hoevekamp, T. B. (1995). Buoyant flow simulation programs with interactive graphics. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/35524

Chicago Manual of Style (16^th Edition):

Hoevekamp, Tobias B. “Buoyant flow simulation programs with interactive graphics.” 1995. Masters Thesis, Oregon State University. Accessed January 25, 2021. http://hdl.handle.net/1957/35524.

MLA Handbook (7^th Edition):

Hoevekamp, Tobias B. “Buoyant flow simulation programs with interactive graphics.” 1995. Web. 25 Jan 2021.

Vancouver:

Hoevekamp TB. Buoyant flow simulation programs with interactive graphics. [Internet] [Masters thesis]. Oregon State University; 1995. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1957/35524.

Council of Science Editors:

Hoevekamp TB. Buoyant flow simulation programs with interactive graphics. [Masters Thesis]. Oregon State University; 1995. Available from: http://hdl.handle.net/1957/35524

Oregon State University

30. Frick, Walter Eugen. A lagrangian philosophy for plume modeling.

Degree: PhD, Civil Engineering, 1994, Oregon State University

URL: http://hdl.handle.net/1957/35545

Subjects/Keywords: Plumes (Fluid dynamics) – Mathematical models

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

APA (6^th Edition):

Frick, W. E. (1994). A lagrangian philosophy for plume modeling. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/35545

Chicago Manual of Style (16^th Edition):

Frick, Walter Eugen. “A lagrangian philosophy for plume modeling.” 1994. Doctoral Dissertation, Oregon State University. Accessed January 25, 2021. http://hdl.handle.net/1957/35545.

MLA Handbook (7^th Edition):

Frick, Walter Eugen. “A lagrangian philosophy for plume modeling.” 1994. Web. 25 Jan 2021.

Vancouver:

Frick WE. A lagrangian philosophy for plume modeling. [Internet] [Doctoral dissertation]. Oregon State University; 1994. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1957/35545.

Council of Science Editors:

Frick WE. A lagrangian philosophy for plume modeling. [Doctoral Dissertation]. Oregon State University; 1994. Available from: http://hdl.handle.net/1957/35545

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Open Access Theses and Dissertations