Tesis sobre el tema "Inhomogeneous flow"
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Batycky, Richard Panko. "Inhomogeneous Stokes flow through porous media". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36640.
Texto completoAlves, Portela Felipe. "Turbulence cascade in an inhomogeneous turbulent flow". Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/63233.
Texto completoDOLCE, MICHELE. "Linear stability analysis of stationary Euler flows for passive scalars and inhomogeneous fluids". Doctoral thesis, Gran Sasso Science Institute, 2020. http://hdl.handle.net/20.500.12571/15111.
Texto completoPanin, Gennadij N., Gerd Tetzlaff, Armin Raabe, Hans-Jürgen Schönfeldt y A. E. Nasonov. "Inhomogeneity of the land surface and the parameterization of surface fluxes". Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-213104.
Texto completoModeme Meßmethoden zur Erfassung der turbulenten Oberflächenflüsse für fühlbare und latente Wärme sowie Impuls mit Hilfe der Eddy-Korrelations-Methode basieren für die bodennahe Grenzschicht auf der Monin-Obukhov-Turbulenztheorie, die stationäre und horizontal homogene Verhältnisse voraussetzt. Über speziell ausgewählten Oberflächen wurde dieses Konzept häufig mit Erfolg überprüft. Experimente jedoch, die gezielt unter inhomogenen Verhältnissen durchgeführt werden, zeigen oft eine Unterschätzung der turbulenten Oberflächenflüsse. Es wird vorgeschlagen, diese Unterschätzungen als einen Einfluß inhomogener Umbegungsbedingungen und instationärer atmosphärischer Prozesse zu interpretieren und zu systematisieren. Dieses Schema kann dazu beitragen, eine neue Art von Validierungsexperimenten unter natürlichen Verhältnissen einer inhomogenen Umgebung zu entwerfen
Zhao, Sicheng. "Interactive dynamics of fluid flow and metallic alloys solidification". Thesis, Aix-Marseille 3, 2011. http://www.theses.fr/2011AIX30010.
Texto completoWe studied the convective phenomena and their dynamical interaction with the formation of the microstructurs during directional solidification of binary metallic alloys.The post-mortem method was used first to study the Columnar-Equiaxed-Transition during the directional solidification of unrefined Al-3.5wt%Ni in cylindric samples under the Accelerated Crucible Rotation Technique. The numerical imulation was carried out and achieved the results in agreement with experiments.The in-situ technique was applied to understand the evolution of equiaxed grains during solidification of Al-4wt%Cu in function of time. The statistical characteristics of equiaxed grains were discussed.The buoyancy-driven and surface-tension-driven instability convection under vertical and horizontal thermal gradients in a liquid-porous double-layered system were respectively investigated through linear instability analysis.The inhomogeneity of the dendritic mush permeability was taken into account in order to understand its influence on the triggering of convection during the directional solidification of Al-3.5wt%Li
Panin, Gennadij N., Gerd Tetzlaff, Armin Raabe, Hans-Jürgen Schönfeldt y A. E. Nasonov. "Inhomogeneity of the land surface and the parameterization of surface fluxes". Wissenschaftliche Mitteilungen des Leipziger Instituts für Meteorologie ; 4 = Meteorologische Arbeiten aus Leipzig ; 2 (1996), S. 204-215, 1996. https://ul.qucosa.de/id/qucosa%3A15066.
Texto completoModeme Meßmethoden zur Erfassung der turbulenten Oberflächenflüsse für fühlbare und latente Wärme sowie Impuls mit Hilfe der Eddy-Korrelations-Methode basieren für die bodennahe Grenzschicht auf der Monin-Obukhov-Turbulenztheorie, die stationäre und horizontal homogene Verhältnisse voraussetzt. Über speziell ausgewählten Oberflächen wurde dieses Konzept häufig mit Erfolg überprüft. Experimente jedoch, die gezielt unter inhomogenen Verhältnissen durchgeführt werden, zeigen oft eine Unterschätzung der turbulenten Oberflächenflüsse. Es wird vorgeschlagen, diese Unterschätzungen als einen Einfluß inhomogener Umbegungsbedingungen und instationärer atmosphärischer Prozesse zu interpretieren und zu systematisieren. Dieses Schema kann dazu beitragen, eine neue Art von Validierungsexperimenten unter natürlichen Verhältnissen einer inhomogenen Umgebung zu entwerfen.
Do, Khac Minh. "Use of orthogonal wavelets in the analysis of two and three-dimensional inhomogeneous turbulent flows /". Châtillon : ONERA, 1998. http://catalogue.bnf.fr/ark:/12148/cb369938476.
Texto completoStorozhenko, V. A., A. V. Myagkiy y R. P. Orel. "Filtering of interference of inhomogeneous regular structure in thermal non-destructive control of cellular structures". Thesis, Eskisehir technical university, 2021. https://openarchive.nure.ua/handle/document/18954.
Texto completoZhang, Xin. "Étude qualitative des solutions du système de Navier-Stokes incompressible à densité variable". Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1215/document.
Texto completoThis thesis is dedicated to two different problems in the mathematical study of the viscous incompressible fluids: the persistence of tangential regularity and the motion of a free surface.The first problem concerns the study of the qualitative properties of some thermodynamical quantities in incompressible fluid models, such as the temperature for Boussinesq system with no diffusion and the density for the non-homogeneous Navier-Stokes system. Typically, we assume those two quantities to be initially piecewise constant along an interface with H"older regularity.As a consequence of stability of certain directional smoothness of the velocity field, we establish that the regularity of the interfaces persist globally with respect to time both in the two dimensional and higher dimensional cases (under some smallness condition). Our strategy is borrowed from the pioneering works by J.-Y.Chemin in 1990s on the vortex patch problem for ideal fluids.Let us emphasize that, apart from the directional regularity, we only impose rough (critical) regularity on the velocity field. The proof requires tools from para-differential calculus and multiplier space theory.In the last part of this thesis, we are concerned with the free boundary value problem for two-phase density-dependent Navier-Stokes system.This model is used to describe the motion of two immiscible liquids, like the oil and the water. Such mixture may occur in different situations, such as in a fixed bounded container, in a moving bounded droplet or in a river with finite depth. We establish the short time well-posedness for this problem. Our result strongly relies on the $L_p$-$L_q$ maximal regularity theoryfor parabolic equations
Leroy, Christophe. "Etude experimentale de la dispersion d'un traceur dans des milieux stratifies ou fortement inhomogenes". Paris 6, 1987. http://www.theses.fr/1987PA066491.
Texto completoPulugundla, Gautam [Verfasser], Christian [Akademischer Betreuer] Karcher, Jörg [Gutachter] Schumacher y Oleg [Gutachter] Zikanov. "Numerical Modelling of Liquid Metal Flows Interacting with Strongly Inhomogeneous Magnetic Fields / Gautam Pulugundla ; Gutachter: Jörg Schumacher, Oleg Zikanov ; Betreuer: Christian Karcher". Ilmenau : TU Ilmenau, 2013. http://d-nb.info/117818451X/34.
Texto completoCroizet, Didier. "Etude experimentale et numérique du comportement à haute température d'un nitrure de silicium". Paris, ENMP, 1992. http://www.theses.fr/1992ENMP0516.
Texto completoMorris, Jeffrey Franklin. "Suspensions: microstructure, diffusion, and inhomogeneous flow". Thesis, 1996. https://thesis.library.caltech.edu/109/1/Morris_jf_1996.pdf.
Texto completoUrsescu, Ana. "Channel flow of electrorheological fluids under an inhomogeneous electric field". Phd thesis, 2005. https://tuprints.ulb.tu-darmstadt.de/556/1/Dissertation_Ana_Ursescu.pdf.
Texto completoUrsescu, Ana [Verfasser]. "Channel flow of electrorheological fluids under an inhomogeneous electric field / vorgelegt von Ana Ursescu". 2005. http://d-nb.info/975134825/34.
Texto completoParvar, Saeed. "LES model for inhomogeneous wall-free turbulent flows and flow characteristics in laminar wall-free and wall-dominated viscoelastic fluid flows". Doctoral thesis, 2021. https://hdl.handle.net/10216/133298.
Texto completoParvar, Saeed. "LES model for inhomogeneous wall-free turbulent flows and flow characteristics in laminar wall-free and wall-dominated viscoelastic fluid flows". Tese, 2021. https://hdl.handle.net/10216/133298.
Texto completoChiu, Te Hsin y 邱德欣. "Explicit Algebraic Stress Modelling of homogeneous flows and inhomogeneous flows". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/02996848248608534167.
Texto completo國立清華大學
動力機械工程學系
89
In this study, the capabilities of the explicit algebraic stress models used to predict homogeneous and inhomogeneous shear flows are examined. The applications of the models are first focused on the homogeneous flow under shear (homogeneous shear flow) and purely irrotational strains flows (plane strain, axisymmetric contraction and axisymmetric expansion). The ratio of the production to dissipation rate in the explicit algebraic stress model is obtained explicitly. This is found to be important to predict correctly the anisotropy levels of the homogeneous strain flows under purely irrotational strains at elevated strain rates. The asymptotic analysis is also adopted to analyse the model behavior at the state where strain approaches infinity. Comparisons of the predicted results with DNS data and measurements indicate that the model predicts reasonable well the homogeneous shear and axisymmetric contraction cases. The predicted anisotropic level under axisymmetric expansion is too high, and in the plane strain case, the model produces higher level of anisotropy and a wrong sign of the stress anisotropy in the direction without strain. Finally, turbulent recirculating flows within sudden expanding pipes are further simulated with explicit algebraic stress model and anisotropic eddy viscosity model. Both models show a betteer stress-strain interaction, showing a reasonable shear layer development. The anisotropic stress fields are also accurately predicted by the models, though the anisotropic eddy viscosity model of Craft et al. returns marginally better results.
Öncül, Ahmet Alper [Verfasser]. "Simulation of interacting populations in inhomogeneous flows using reduced models / von: Ahmet Alper Öncül". 2010. http://d-nb.info/1011576449/34.
Texto completoNhan, Phan-Thien y Xi-Jun Fan. "Viscoelastic Mobility Problem Using A Boundary Element Method". 2002. http://hdl.handle.net/1721.1/4021.
Texto completoSingapore-MIT Alliance (SMA)