Results 21 to 30 of about 321,248 (311)
Anomalous Radiative Transfer in Heterogeneous Media. [PDF]
Adv Theory SimulAbstractMonte Carlo (MC) simulations are the gold standard for describing various transport phenomena and have largely contributed to the understanding of these processes. However, while their implementation for classical transport governed by exponential step‐length distributions is well‐established, widely accepted approaches are still lacking for ...
Tommasi F +7 more
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Hypertemperature effects in heterogeneous media and thermal flux at small-length scales
, 2023 We propose an enriched microscopic heat conduction model that can account for size effects in heterogeneous media. Benefiting from physically relevant scaling arguments, we improve the regularity of the corrector in the classical problem of periodic ...
Muntean, Adrian, +3 more
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Osmosis for non-electrolyte solvents in permeable periodic porous media [PDF]
, 2016 The paper gives a rigorous description, based on mathematical homogenization theory, for flows of solvents with not charged solute particles under osmotic pressure for periodic porous media permeable for solute particles.
Heintz, Alexei, Piatnitski, Andrey
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Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2021 Background. One of the developing branches of modern fluid and gas mechanics is the mechanics of multiphase and multicomponent media. Experimental research of many dynamics processes of inhomogeneous media is difficult, therefore, mathematical modeling
D.A. Tukmakov
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The diffusion of CO2-brine storage based on stochastic partial differential equations [PDF]
E3S Web of Conferences, 2020 The migration of CO2 is stochastic in heterogeneous porous media. This paper considers the CO2 diffusion with the case of steady flow in heterogeneous porous media.
Bin Liu, Bo Wang, Zhuo Li, Yanfang Lv
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Generalized Lagrangian Coordinates for Transport and Two-Phase Flows in Heterogeneous Anisotropic Porous Media [PDF]
, 2001 We show how Lagrangian coordinates provide an effective representation of how difficult non-linear, hyperbolic transport problems in porous media can be dealt with. Recalling Lagrangian description first, we then derive some basic but remarkable properties
Plouraboué, Franck +2 more
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Compression effects in heterogeneous media [PDF]
Journal de l’École polytechnique — Mathématiques, 2019 We study in this paper compression effects in heterogeneous media with maximal packing constraint. Starting from compressible Brinkman equations, where maximal packing is encoded in a singular pressure and a singular bulk viscosity, we show that the global weak solutions converge (up to a subsequence) to global weak solutions of ...
Bresch, D., Nečasová, Š, Perrin, C.
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Larmor frequency in heterogeneous media [PDF]
Journal of Magnetic Resonance, 2019 The Larmor frequency shift is found in porous media consisting of NMR-reporting fluid filling a connected pore within an NMR-invisible matrix for the case of fast diffusion in the fluid. The matrix material has a distinct location-independent anisotropic magnetic susceptibility tensor that induces a heterogeneous microscopic magnetic field when exposed
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Homogenization of Fronts in Highly Heterogeneous Media [PDF]
SIAM Journal on Mathematical Analysis, 2011 We consider the evolution by mean curvature in a highly heterogeneous medium, modeled by a periodic forcing term, with large $L^\infty$-norm but with zero average. We prove the existence of a homogenization limit, when the dimension of the periodicity cell tends to zero, and show some properties of the effective velocity.
Guy Barles +2 more
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Force-Induced Dispersion in Heterogeneous Media [PDF]
Physical Review Letters, 2015 The effect of a constant applied external force, induced for instance by an electric or gravitational field, on the dispersion of Brownian particles in periodic media with spatially varying diffusivity, and thus mobility, is studied. We show that external forces can greatly enhance dispersion in the direction of the applied force and also modify, to a ...
Guérin, Thomas, Dean, David S
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