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In this paper, we investigate the well-posedness and the long-time asymptotic behavior for the initial-boundary value problem for multi-term time-fractional diffusion equations, where the time differentiation consists of a finite summation…

偏微分方程分析 · 数学 2023-01-02 Zhiyuan Li , Yikan Liu , Masahiro Yamamoto

In this work, we investigate a model describing flow through porous media with permeability heterogeneity, combining an advection-reaction-diffusion equation for solute concentration with an unsteady Darcy-Brinkman equation with Korteweg…

偏微分方程分析 · 数学 2026-04-14 Pankaj Roy , Satyajit Pramanik

In this paper, we discuss initial-boundary value problems for linear diffusion equation with multiple time-fractional derivatives. By means of the Mittag-Leffler function and the eigenfunction expansion, we reduce the problem to an integral…

偏微分方程分析 · 数学 2013-11-12 Zhiyuan Li , Masahiro Yamamoto

The global existence of strong solution to the initial-boundary value problem of the three-dimensional compressible viscoelastic fluids near equilibrium is established in a bounded domain. Uniform estimates in $W^{1,q}$ with $q>3$ on the…

偏微分方程分析 · 数学 2011-02-23 Xianpeng Hu , Dehua Wang

A mathematical model for the discrete nonlinear fragmentation (collision-induced breakage) equation with diffusion is studied. The existence of global weak solutions is established in arbitrary spatial dimensions without assuming a strictly…

偏微分方程分析 · 数学 2026-03-12 Saumyajit Das , Ram Gopal Jaiswal

We study an initial boundary value problem on a ball for the heat-conductive system of compressible Navier-Stokes-Fourier equations, in particular, a criterion of breakdown of the classical solution. For smooth initial data away from…

偏微分方程分析 · 数学 2015-11-11 Xiangdi Huang

The translocation dynamics of a polymer chain through a nanopore in the absence of an external driving force is analyzed by means of scaling arguments, fractional calculus, and computer simulations. The problem at hand is mapped on a one…

软凝聚态物质 · 物理学 2007-07-29 J. L. A. Dubbeldam , A. Milchev , V. G. Rostiashvili , T. A. Vilgis

A modified Poisson-Nernst-Planck system in a bounded domain with mixed Dirichlet-Neumann boundary conditions is analyzed. It describes the concentrations of ions immersed in a polar solvent and the correlated electric potential due to the…

偏微分方程分析 · 数学 2023-05-25 Ansgar Jüngel , Annamaria Massimini

We consider a class of Cahn-Hilliard equation with kinetic rate dependent dynamic boundary conditions that describe possible short-range interactions between the binary mixture and the solid boundary. In the presence of surface diffusion on…

偏微分方程分析 · 数学 2024-02-08 Maoyin Lv , Hao Wu

In this work, we study the initial boundary value problem for a non-strictly hyperbolic $2\times2$ system of equations in the quarter plane $x>0,t>0$ which is derived from Eulerian droplet model for air particle flow for velocity and volume…

偏微分方程分析 · 数学 2025-07-03 Kayyunnapara Divya Joseph

We consider the Helmholtz problem in the context of the evolution of uniform initial distribution of a physical attribute in general porous media subject to a partially absorbing boundary condition. Its spectral property as a reflection of…

软凝聚态物质 · 物理学 2013-05-29 Seungoh Ryu , David Linton Johnson

We investigate the stability and global existence of weak solutions to a free boundary problem governing the evolution of polymeric fluids. We construct weak solutions of the two-phase model by performing the asymptotic limit of a…

偏微分方程分析 · 数学 2017-05-22 Donatella Donatelli , Konstantina Trivisa

The work investigates a model that combines a convection-diffusion-reaction equation for solute concentration with an unsteady Darcy-Brinkman equation for the flow field, including the Kortweg stress. Additionally, the flow field…

偏微分方程分析 · 数学 2024-06-11 Sahil Kundu , Surya Narayan Maharana , Manoranjan Mishra

We consider the compressible Navier-Stokes-Fourier system on time-dependent domains with prescribed motion of the boundary, supplemented with slip boundary conditions for the velocity. Assuming that the pressure can be decomposed into an…

偏微分方程分析 · 数学 2015-11-17 Ondrej Kreml , Vaclav Macha , Sarka Necasova , Aneta Wroblewska-Kaminska

We consider a class of viscous fluids with a general monotone dependence of the viscous stress on the symmetric velocity gradient. We introduce the concept of dissipative solution to the associated initial boundary value problem inspired by…

偏微分方程分析 · 数学 2019-06-04 A. Abbatiello , E. Feireisl

In this paper we are concerned with the initial boundary value problems of linear and semi-linear parabolic equations with mixed boundary conditions on non-cylindrical domains in spatial-temporal space. We obtain the existence of a weak…

偏微分方程分析 · 数学 2016-11-22 Tujin Kim , Daomin Cao

We study the diffusion (or heat) equation on a finite 1-dimensional spatial domain, but we replace one of the boundary conditions with a "nonlocal condition", through which we specify a weighted average of the solution over the spatial…

偏微分方程分析 · 数学 2017-08-04 Peter D. Miller , David A. Smith

We study the diffusion of an ensemble of overdamped particles sliding over a tilted random poten- tial (produced by the interaction of a particle with a random polymer) with long-range correlations. We found that the diffusion properties of…

无序系统与神经网络 · 物理学 2014-04-11 R. Salgado-Garcia , Cesar Maldonado

This paper deals with a boundary-value problem in three-dimensional smooth bounded convex domains for the coupled chemotaxis-Stokes system with slow $p$-Laplacian diffusion \begin{equation}\nonumber \left\{ \begin{aligned} &n_t+u\cdot\nabla…

偏微分方程分析 · 数学 2018-09-13 Weirun Tao , Yuxiang Li

We consider a nematic liquid crystal flow with partially free boundary in a smooth bounded domain in $\mathbb{R}^2$. We prove regularity estimates and the global existence of weak solutions enjoying partial regularity properties, and a…

偏微分方程分析 · 数学 2023-08-09 Yannick Sire , Yantao Wu , Yifu Zhou