Results 271 to 280 of about 139,632 (315)

Viscous fingers in porous media

Physical Review A, 1987
We consider the formation of viscous fingers in porous media using the boundary-integral method with particular application to a recent experiment involving a Hele-Shaw cell filled with glass beads. When the less viscous fluid wets the beads we can account for the patterns as ordinary viscous fingers in the presence of large noise.
, Li, , Sander
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Regularized MPM for porous media

2023
The present work deals with improving the Material Point Method (MPM) and its application to differential equations for modelling dry and saturated porous media. An adaptive regularization is proposed to improve the Moving Least Squares Approximation (MLS) in MPM, allowing improved results to be obtained even in the presence of unfavourable ...
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Magnetohydrodynamic flows in porous media

Journal of Fluid Mechanics, 2002
The aim of this work is to investigate the tensorial filtration law in rigid porous media for steady-state slow flow of an electrically conducting, incompressible and viscous Newtonian fluid in the presence of a magnetic field. The seepage law under a magnetic field is obtained by upscaling the flow at the pore scale. The macroscopic magnetic field
Geindreau, C., Auriault, J.-L.
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Interfacial Instabilities In Porous Media

SPE California Regional Meeting, 1977
American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Abstract Spontaneous emulsification at liquid-liquid interfaces and Haines' jump phenomenon at liquid-gas interfaces may be explained in terms of classical fluid mechanics, mass and energy diffusion and surface thermodynamics ...
T.P. Castor, W.H. Somerton
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Simulating flow in porous media

Physical Review A, 1988
The problem of two-phase fluid flow in statistically homogeneous but random porous media is addressed. Particular emphasis is placed on the role of the stochastic nature of the porous medium in the development of unstable interfaces at large mobility ratios. A formalism is developed in which the random nature of a real porous medium can be incorporated
, Chan, , Hughes, , Paterson, , Sirakoff
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Resurgence flows in porous media

Physical Review E, 2009
Porous media with resurgences can be described by a double structure, namely, a continuous porous medium and capillaries with impermeable walls which relate distant points of the continuous medium. The resurgences can be either punctual or extended. The equations for flow in such media are derived; some general properties of the resulting system, which
P M, Adler, V M, Mityushev
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Tortuous flow in porous media

Physical Review E, 1996
The concept of tortuosity of fluid flow in porous media is discussed. A lattice-gas cellular automaton method is applied to solve the flow of a Newtonian uncompressible fluid in a two-dimensional porous substance constructed by randomly placed rectangles of equal size and with unrestricted overlap.
Koponen, Antti, Kataja, M., Timonen, J.
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Porous Media

2010
A General Set of Bioheat Equations Based on the Volume Averaging Theory, Akira Nakayama, Fujio Kuwahara, and Wei Liu Introduction Volume Averaging Procedure Governing Equation for Blood Flow Two-Energy Equation Model for Blood Flow and Tissue Three-Energy Equation Model for Countercurrent Heat Transfer in a Circulatory System Effect of Spatial ...
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On Adsorption and Diffusion in Porous Media

ZAMM, 2001
Preprint: Weierstraß-Institut für Angewandte Analysis und Stochastik, vol ...
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Statistical Hydrodynamics in Porous Media

Journal of Applied Physics, 1954
The statistics of disordered phenomena as exemplified by Einstein's theory of the Brownian motion is applied to the flow of fluids through porous media. It is shown that such a statistical treatment of the hydrodynamics in porous media automatically explains some well-known phenomena in a more satisfactory manner than do capillaric ...
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