Results 11 to 20 of about 323,439 (311)
Equivalent Boundary Conditions for Heterogeneous Acoustic Media [PDF]
Trends in Computational and Applied Mathematics, 2014 In this work, we have worked on possibilities to model artificial boundaries needed in the simulation of wave propagation in acoustic heterogeneous media.
Manuela Longoni de Castro +2 more
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Hypertemperature effects in heterogeneous media and thermal flux at small-length scales [PDF]
, 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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PRELIMINARY INVESTIGATIONS OF TRANSPORT IN HETEROGENEOUS RANDOM MEDIA [PDF]
EPJ Web of Conferences, 2021 Random media emerge in several applications in reactor physics and safety analysis. Most often, models of stochastic media assume spatial homogeneity, whereas real-world complex materials, such as fuel chunks resulting from core degradation, typically ...
Larmier C. +4 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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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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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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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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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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Catastrophic Rupture Induced Damage Coalescence in Heterogeneous Brittle Media [PDF]
, 2006 In heterogeneous brittle media, the evolution of damage is strongly influenced by the multiscale coupling effect. To better understand this effect, we perform a detailed investigation of the damage evolution, with particular attention focused on the ...
汪海英 +5 more
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