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Consider the steady Boltzmann equation with slab symmetry for a monatomic, hard sphere gas in a half space. At the boundary of the half space, it is assumed that the gas is in contact with its condensed phase. The present paper discusses…

偏微分方程分析 · 数学 2021-03-19 Niclas Bernhoff , François Golse

A general adsorption model is developed to describe the interactions between near-wall fluid molecules and solid surface. This model serves as a framework for the theoretical modelling of the boundary slip phenomena. Based on this…

软凝聚态物质 · 物理学 2016-12-26 Jian-Jun Shu , Ji Bin Melvin Teo , Weng Kong Chan

For the one-dimensional linear kinetic equations with collisional frequency of the molecules, proportional to the module velocity of molecules, analytical solutions of problems about temperature jump and weak evaporation (condensation) in…

数学物理 · 物理学 2014-06-10 A. V. Latyshev , A. A. Yushkanov

We investigate the speed of approach to Maxwellian equilibrium for a collisionless gas enclosed in a vessel whose wall are kept at a uniform, constant temperature, assuming diffuse reflection of gas molecules on the vessel wall. We…

偏微分方程分析 · 数学 2012-07-26 Kazuo Aoki , François Golse

The dynamics of a system composed of inelastic hard spheres or disks that are confined between two parallel vertically vibrating walls is studied (the vertical direction is defined as the direction perpendicular to the walls). The distance…

软凝聚态物质 · 物理学 2024-11-06 M. Mayo , J. C. Petit , M. I. García de Soria , P. Maynar

We study the asymptotic behavior of the kinetic free-transport equation enclosed in a regular domain, on which no symmetry assumption is made, with Cercignani-Lampis boundary condition. We give the first proof of existence of a steady state…

偏微分方程分析 · 数学 2021-06-14 Armand Bernou

We consider a boundary-value problem describing the steady motion of a two-component mixture of viscous compressible heat-conducting fluids in a bounded domain. We make no simplifying assumptions except for postulating the coincidence of…

偏微分方程分析 · 数学 2017-10-19 Alexander Mamontov , Dmitriy Prokudin

We are concerned with the global bifurcation analysis of positive solutions to free boundary problems arising in plasma physics. We show that in general, in the sense of domain variations, the following alternative holds: either the shape…

偏微分方程分析 · 数学 2021-12-13 Daniele Bartolucci , Yeyao Hu , Aleks Jevnikar , Wen Yang

Our experiments and three-dimensional molecular dynamics simulations of particles confined to a vertical monolayer by closely spaced frictional walls (sidewalls) yield velocity distributions with non-Gaussian tails and a peak near zero…

统计力学 · 物理学 2009-11-10 J. S. van Zon , J. Kreft , Daniel I. Goldman , D. Miracle , J. B. Swift , Harry L. Swinney

The analysis and homogenization of a moving boundary problem for a highly heterogeneous, periodic two-phase medium is considered. In this context, the normal velocity governing the motion of the interface separating the two competing phases…

偏微分方程分析 · 数学 2019-01-09 Michael Eden

We study the thermodynamical properties of a one-dimensional gas with one-dimensional gravitational interactions, and placed in a uniform mass background. Periodic boundary conditions are implemented as a modification of the potential…

统计力学 · 物理学 2017-02-22 Pankaj Kumar , Bruce N. Miller , Dan Pirjol

In this paper we revisit the derivation of boundary conditions for the Boltzmann Equation. The interaction between the wall atoms and the gas molecules within a thin surface layer is described by a kinetic equation introduced in [9] and…

偏微分方程分析 · 数学 2013-06-20 Stéphane Brull , Pierre Charrier , Luc Mieussens

We investigate the regularity issue for the diffuse reflection boundary problem to the stationary linearized Boltzmann equation for hard sphere potential, cutoff hard potential, or cutoff Maxwellian molecular gases in a strictly convex…

偏微分方程分析 · 数学 2018-03-13 I-Kun Chen , Chun-Hsiung Hsia , Daisuke Kawagoe

This article studies the solutions of a two-dimensional grade-two fluid model with a fully non-homogeneous boundary condition for velocity u. Compared to problems with a homogeneous or tangential boundary condition, studied by many authors…

偏微分方程分析 · 数学 2018-11-14 Jean Marie Bernard

We calculate the exact stationary distribution of the one-dimensional zero-range process with open boundaries for arbitrary bulk and boundary hopping rates. When such a distribution exists, the steady state has no correlations between sites…

统计力学 · 物理学 2009-11-10 E. Levine , D. Mukamel , G. M. Schutz

We study the equilibrating effects of the boundary and intermolecular collision in the kinetic theory for rarefied gases. We consider the Maxwell-type boundary condition, which has weaker equilibrating effect than the commonly studied…

数学物理 · 物理学 2015-09-30 Hung-Wen Kuo

Motion of a rigid body immersed in a semi-infinite expanse of gas in a $d$-dimensional region bounded by an infinite plane wall is studied for free molecular flow on the basis of the free Vlasov equation under the specular boundary…

偏微分方程分析 · 数学 2022-05-11 Kai Koike

The existence of superfluidity in a 3D Bose-gas can depend on boundary interactions with channel walls. We study a simple model where the dilute moving Bose-gas interacts with the walls via hard-core repulsion. Special boundary excitations…

统计力学 · 物理学 2009-10-31 D. Roubtsov , Y. Lepine

The evolution of two isothermal, incompressible, immiscible fluids in a bounded domain is governed by Cahn-Hilliard-Navier-Stokes equations (CHNS System). In this work, we study the well-posedness results for the CHNS system with…

偏微分方程分析 · 数学 2025-10-28 Manika Bag , Tania Biswas , Sheetal Dharmatti

The problem of measuring nontrivial static correlations in deeply supercooled liquids made recently some progress thanks to the introduction of amorphous boundary conditions, in which a set of free particles is subject to the effect of a…

无序系统与神经网络 · 物理学 2015-06-11 G. Gradenigo , R. Trozzo , A. Cavagna , T. S. Grigera , P. Verrocchio
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