Thèses sur le sujet « Viscous flow Mathematical models »
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Stokes, Yvonne Marie. « Very Viscous Flows Driven by Gravity with particular application to Slumping of Molten Glass ». Title page, contents and abstract only, 1998. http://thesis.library.adelaide.edu.au/public/adt-SUA20020724.171358.
Texte intégralMarshall, David D. « Extending the functionalities of Cartesian grid solvers : viscous effects modeling and MPI parallelization ». Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/11999.
Texte intégralRossi, Louis Frank, et Louis Frank Rossi. « A spreading blob vortex method for viscous bounded flows ». Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186562.
Texte intégralKim, Goo. « A vorticity-velocity approach for three-dimensional unsteady viscous flow over wings ». Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/12123.
Texte intégralHuang, Lingyan, et 黃凌燕. « Mass transport due to surface waves in a water-mud system ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B35380457.
Texte intégralVantzos, Orestis. « Mathematical Modeling of Charged Liquid Droplets : Numerical Simulation and Stability Analysis ». Thesis, University of North Texas, 2006. https://digital.library.unt.edu/ark:/67531/metadc5240/.
Texte intégralSirino, Thiago. « Estudo numérico da influência da viscosidade no desempenho de uma bomba centrífuga submersa ». Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/880.
Texte intégralBombas centrífugas submersas têm sido cada vez mais utilizadas comométodo de elevação artificial para a produção de óleos em campos marítimos profundos. O bombeio de fluidos com viscosidades significativamente diferentes a da água gera um desempenho da bomba distinto ao do apresentado no seu catálogo, com uma queda de rendimento da mesma, assim sendo, a influência da viscosidade do fluido no desempenho em uma bomba centrífuga submersa tem recebido muita atenção há alguns anos. Neste cenário, no presente trabalho foi realizada a simulação numérica do escoamento monofásico, newtoniano, incompressível e isotérmico no rotor e difusor de uma bomba centrífuga submersa utilizando o programa de dinâmica de fluidos computacional ANSYS CFX. As simulações numéricas foram realizadas para um estágio de uma BCS de três estágios para escoamentos envolvendo fluidos com viscosidades variando de 1 a 1020 cP. A partir dos resultados numéricos obtidos foram elaboradas as curvas para a altura de elevação da bomba e eficiência e comparados contra dados experimentais obtidos por Amaral (2007). Também foi realizada uma análise do padrão do escoamento no rotor e difusor com o objetivo de avaliar o comportamento dos campos de velocidade e pressão, a intensidade turbulenta e o aparecimento de recirculações para a BCS operando fora da faixa de operação ótima. Alem disso foi analisada a degradação do desempenho da bomba em função da viscosidade do fluido de trabalho, e foram utilizados números adimensionais como parâmetros para quantificar essa degradação.
This work presents a numerical analysis on the influence of viscosity on the performance of a semi-axial electrical submersible pump (ESP) such as the ones used in offshore petroleum production. A single stage composed of an impeller with seven blades and a diffuser with seven vanes is considered. Flow simulations for water and other fluids with viscosity ranging from 60 to 1020 cP were performed with the aid of Computational Fluid Dynamics, and both design and off-design flow rates and impeller speeds were investigated. The numerical model was compared with experimental measurements of the static pressure difference on a given stage of a three-stage ESP system. Results showed good agreement between the numerical and the measured pressure difference values. As a main objective, the pump performance degradation relative to viscosity is analyzed for several conditions regarding design and off-design operation. The flow field pattern associated with the effect of viscosity is also analyzed. Studying the pump performance degradation cause by viscosity, especially for off-design operation like this work is also intended, is a current and ongoing demand in offshore petroleum production. In association with that, understanding the flow field pattern for those scenarios, which seems to be very particular for each pump, should help to contribute to the related literature in this field.
Cummings, Linda Jane. « Free boundary models in viscous flow ». Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339364.
Texte intégralGoble, Brian Dean. « A truncation error injection approach to viscous-inviscid interaction ». Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184318.
Texte intégralGarthwaite, Matthew Campbell. « Deformation of Tibet : InSAR analysis and viscous flow models ». Thesis, University of Leeds, 2011. http://etheses.whiterose.ac.uk/2611/.
Texte intégralO'Kiely, Doireann. « Mathematical models for the glass sheet redraw process ». Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:3788de4d-8254-4fba-9cd0-4bec32409d1e.
Texte intégralGuvenen, Haldun. « Aerodynamics of bodies in shear flow ». Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184917.
Texte intégralScroggs, Richard A. « Validation of computational fluid-structure interaction models by comparison with collapsible tube experiments ». Thesis, University of Sheffield, 2002. http://etheses.whiterose.ac.uk/14835/.
Texte intégralWong, Ka-chung Colin, et 黃家聰. « Hydraulics of bottom rack chamber for supercritical flow diversion ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B42664469.
Texte intégralHenry, Eric James. « Contaminant induced flow effects in variably-saturated porous media ». Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/191256.
Texte intégralZeidan, Dia Hussein Abdulhameed. « Mathematical and numerical study of two-phase flow models ». Thesis, Manchester Metropolitan University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396533.
Texte intégralWang, Ying, et 王瑩. « A study of mutual fund flow and market return volatility ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B26843572.
Texte intégralBASEGHI, BEHDAD. « THREE-DIMENSIONAL SEEPAGE THROUGH POROUS MEDIA WITH THE RESIDUAL FLOW PROCEDURE ». Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184107.
Texte intégralChan, Johnson Lap-Kay. « Numerical procedure for potential flow problems with a free surface ». Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/28637.
Texte intégralApplied Science, Faculty of
Mechanical Engineering, Department of
Graduate
Liu, Peng, et 刘鹏. « Flow mechanisms in horizontal sediment-laden jets ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49799496.
Texte intégralpublished_or_final_version
Civil Engineering
Doctoral
Doctor of Philosophy
Zoebelein, Till. « Development of an LU-scheme for the solution of hypersonic non-equilibrium flow ». Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/12509.
Texte intégralWong, Ching-chi, et 黃精治. « Flow and pollutant dispersion over idealized urban street canyons using large-eddy simulation ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/206698.
Texte intégralpublished_or_final_version
Mechanical Engineering
Doctoral
Doctor of Philosophy
Grm, Aleksander. « Mathematical analysis of macroscopic models for slow dense granular flow ». [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=98408214X.
Texte intégralPeng, Jixian, et 彭继娴. « Macroscopic characteristics of dense road networks ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/195994.
Texte intégralpublished_or_final_version
Civil Engineering
Master
Master of Philosophy
Yan, Li, et 顏理. « On the traffic flow control system ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39431174.
Texte intégralPoon, Hao-chi Cynthia, et 潘顥之. « Numerical simulation of turbulent flow and microclimate within and above vegetation canopy ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45589677.
Texte intégralRinaldi, Stephanie. « Experiments on the dynamics of cantilevered pipes subjected to internal andor external axial flow ». Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111615.
Texte intégralYue, Yang, et 樂陽. « Spatial-temporal dependency of traffic flow and its implications for short-term traffic forecasting ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B35507366.
Texte intégralWong, Chung-yin Philip, et 黃仲賢. « The development of pedestrian flow model ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B48194025.
Texte intégralpublished_or_final_version
Transport Policy and Planning
Master
Master of Arts in Transport Policy and Planning
Richard, Paul François. « A computer analysis of the flow of water and nutrients in agricultural soils as affected by subsurface drainage ». Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/29171.
Texte intégralScience, Faculty of
Resources, Environment and Sustainability (IRES), Institute for
Graduate
Brihi, Sarra. « Mathematical analysis and numerical approximation of flow models in porous media ». Thesis, Normandie, 2018. http://www.theses.fr/2018NORMC263/document.
Texte intégralThis thesis is devoted to Darcy Brinkman Forchheimer (DBF) equations with a non standard boundary conditions. We prove first the existence of different type of solutions (weak, strong) of the stationary DBF problem in a simply connected domain with boundary conditions on the normal component of the velocity field and the tangential component of the vorticity. Next, we consider Brinkman Forchheimer (BF) system with boundary conditions on the pressure in a non simply connected domain. We prove the well-posedness and the existence of a strong solution of this problem. We establish the regularity of the solution in the L^p spaces, for p >= 2.The approximation of the non stationary DBF problem is based on the pseudo-compressibility approach. The second order's error estimate is established in the case where the boundary conditions are of type Dirichlet or Navier. Finally, the finite elements Galerkin Discontinuous method is proposed and the convergence is settled concerning the linearized DBF problem and the non linear DBF system with a non standard boundary conditions
Khatibi, Rahman Haghi. « Mathematical open channel flow models and identification of their friction parameters ». Thesis, University of London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263145.
Texte intégralLierkamp, Darren. « Simulating the effects of following distance on a high-flow freeway ». Full text available online (restricted access), 2003. http://images.lib.monash.edu.au/ts/theses/Lierkamp.pdf.
Texte intégralAland, Sebastian, Sabine Egerer, John Lowengrub et Axel Voigt. « Diffuse interface models of locally inextensible vesicles in a viscous fluid ». Elsevier, 2014. https://htw-dresden.qucosa.de/id/qucosa%3A32307.
Texte intégralKim, Inchul. « Numerical study of the onset of instability in the flow past a sphere ». Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184809.
Texte intégralEl, Didy Sherif Mohamed Ahmed 1951. « Two-dimensional finite element programs for water flow and water quality in multi-aquifer systems ». Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/191110.
Texte intégralPincombe, Brandon. « A study of non-Newtonian behaviour of blood flow through stenosed arteries / ». Title page, contents and summary only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09php6469.pdf.
Texte intégralKhosravi-Dehkordi, Iman. « Load flow feasibility under extreme contingencies ». Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100252.
Texte intégralDenoting the load flow equations by z = f(x) where z is the vector of specified injections (the real and reactive bus demands, the specified real power bus generations and the specified bus voltage levels), the question addressed is whether there exists a real solution x to z = f( x) where x is the vector of unknown bus voltage magnitudes at load buses and unknown bus voltage phase angles at all buses but the reference bus. Attacking this problem via conventional load flow algorithms has a major drawback, principally the fact that such algorithms do not converge when the load flow injections z define or are close to defining an infeasible load flow. In such cases, lack of convergence may be due to load flow infeasibility or simply to the ill-conditioning of the load flow Jacobian matrix.
This thesis therefore makes use of the method of supporting hyperplanes to characterize the load flow feasibility region, defined as the set the injections z for which there exists a real solution x to the load flow equations. Supporting hyperplanes allow us to calculate the so-called load flow feasibility margin, which determines whether a given injection is feasible or not as well as measuring how close the injection is to the feasibility boundary. This requires solving a generalized eigenvalue problem and a corresponding optimization for the closest feasible boundary point to the given injection.
The effect of extreme network contingencies on the feasibility of a given injection is examined for two main cases: those contingencies that affect the feasibility region such as line outages and those that change the given injection itself such as an increase in VAR demand or the loss of a generator. The results show that the hyperplane method is a powerful tool for analyzing the effect of extreme contingencies on the feasibility of a power network.
Li, Xianxiang, et 李顯祥. « Large-eddy simulation of wind flow and air pollutant transport inside urban street canyons of different aspect ratios ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40687326.
Texte intégralHnidei, Stephen D. « Selective withdrawal of a linearly stratified fluid in a triangular reservoir ». Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28834.
Texte intégralScience, Faculty of
Mathematics, Department of
Graduate
Sheng, Jopan. « Multiphase immiscible flow through porous media ». Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/53630.
Texte intégralPh. D.
Morland, Lawrence Christopher. « Mathematical models for a fluid flow arising in turbine blade cooling passages ». Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330029.
Texte intégralWoudberg, Sonia. « Laminar flow through isotropic granular porous media ». Thesis, Link to the online version, 2006. http://hdl.handle.net/10019/1320.
Texte intégralHo, Wai-man, et 何慧敏. « A numerical study on turbulent oscillatory plane Couette flow ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B2977083X.
Texte intégralAmikiya, Emmanuel Adoliwine. « Flow and reactive transport processes in porous media ». Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85838.
Texte intégralENGLISH ABSTRACT: Flow and reactive transport of chemical species is a very common phenomenon that occurs in natural and artificial systems. However in this study, the topic is related to acid mine drainage in the South African mining environment. Due to the hazards associated with acid mine drainage, prevention or treatment of mine effluent water before discharging to receiving waters and other environments is a necessity. A new time-dependent mathematical model is developed for a passive treatment method, based on multi-scale modelling of the coupled physico-chemical processes such as diffusion, convection, reactions and filtration, that are involved in the treatment process. The time-dependent model is simulated on a two-dimensional domain using finite volume discretization to obtain chemical species distributions.
AFRIKAANSE OPSOMMING: Vloei en reagerende transport van chemiese spesies is ’n baie algemene verskynsel wat in natuurlike en kunsmatige stelsels plaasvind. In hierdie studie is die onderwerp egter verwant aan suurmyndreinering in die Suid-Afrikaanse mynbou-omgewing. As gevolg van die gevare wat verband hou met suurmyndreinering, is die voorkoming of die behandeling van die afval-mynwater voor dit in opvangswaters en ander omgewings beland ’n noodsaaklikheid. ’n Nuwe tydafhanklike wiskundige model vir ’n passiewe behandelingsmetode is ontwikkel. Dit is gebaseer op die multi-skaal modulering van gekoppelde fisies-chemiese prosesse soos diffusie, konveksie, reaksies en filtrasie, wat by die behandelingsproses betrokke is. Die tydafhanklike model word gesimuleer op ’n twee-dimensionele domein met behulp van eindige volume diskretisasie om die verspreiding van chemiese spesies te bepaal.
Atamtürk, Alper. « Conflict graphs and flow models for mixed-integer linear optimization problems ». Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/26002.
Texte intégral溫建勇 et Kin-yung Wan. « Biham-middleton-levine traffic model in different spatial dimensions ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B3122183X.
Texte intégralWong, Chun-kuen, et 黃春權. « Dynamic macroscopic modeling of highway traffic flows ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31243757.
Texte intégralFreedland, Graham. « Investigation of Jet Dynamics in Cross-Flow : Quantifying Volcanic Plume Behavior ». PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3314.
Texte intégralHofstede, Coen Matthijs. « Ice Stream Dynamics : A Transition between Sheet Flow and Shelf Flow ». Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/HofstedeCM2008.pdf.
Texte intégral