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We propose and analyze a one-dimensional multi-species cross-diffusion system with non-zero-flux boundary conditions on a moving domain, motivated by the mod- eling of a Physical Vapor Deposition process. Using the boundedness by entropy…

偏微分方程分析 · 数学 2017-09-22 Athmane Bakhta , Virginie Ehrlacher

We consider the parabolic chemotaxis model \[ u_t=\Delta u - \chi \nabla\cdot(\frac uv \nabla v), \qquad\qquad v_t=\Delta v - v + u\] in a smooth, bounded, convex two-dimensional domain and show global existence and boundedness of solutions…

偏微分方程分析 · 数学 2016-04-20 Johannes Lankeit

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

In this paper, we study unique, globally defined uniformly bounded weak solutions for a class of semilinear reaction-diffusion-advection systems. The coefficients of the differential operators and the initial data are only required to be…

偏微分方程分析 · 数学 2021-09-10 William E Fitzgibbon , Jeff Morgan , Bao Quoc Tang , Hong-Ming Yin

The global-in-time existence of bounded weak solutions to general cross-diffusion systems describing the evolution of $n$ population species is proved. The equations are considered in a bounded domain with no-flux boundary conditions. The…

偏微分方程分析 · 数学 2018-12-24 Ansgar Jüngel

We study the interaction between incompressible viscous fluids and multilayered elastic structures in a 3D/2D/3D framework, where a 3D fluid interacts with a 2D thin elastic layer, coupled to a 3D thick elastic solid. The system is driven…

偏微分方程分析 · 数学 2025-01-14 Claudiu Mîndrilă , Arnab Roy

The effects of a boundary on reaction systems are examined in the framework of the general single-species reaction/coalescence process. The boundary naturally represents the reactants' container, but is applicable to exciton dynamics in a…

统计力学 · 物理学 2009-10-31 M. J. E. Richardson , Y. Kafri

This paper concerns multiphase models of tumor growth in interaction with a surrounding tissue, taking into account also the interplay with diffusible nutrients feeding the cells. Models specialize in nonlinear systems of possibly…

数学物理 · 物理学 2017-01-20 Andrea Tosin

Global existence and boundedness of classical solutions of the chemotaxis--consumption system \begin{align*} n_t &= \Delta n - \nabla \cdot (n \nabla c), \\ 0 &= \Delta c - nc, \end{align*} under no-flux boundary conditions for $n$ and…

偏微分方程分析 · 数学 2020-12-08 Mario Fuest , Johannes Lankeit , Masaaki Mizukami

We investigate a hydrodynamic system of Navier--Stokes/Cahn--Hilliard type, which describes the motion of a two-phase flow of two incompressible fluids with unmatched densities coupled with a soluble chemical species. Derived from Onsager's…

偏微分方程分析 · 数学 2025-12-30 Andrea Giorgini , Jingning He , Hao Wu

We consider a class of macroscopic models for the spatio-temporal evolution of urban crime, as originally going back to Short et al. (Math. Mod. Meth. Appl. Sci. 18, 2008). The focus here is on the question how far a certain nonlinear…

偏微分方程分析 · 数学 2020-05-19 Nancy Rodriguez , Michael Winkler

The coupled chemotaxis fluid system \begin{equation} \left\{ \begin{array}{llc} n_t=\Delta n-\nabla\cdot(n S(x,n,c)\cdot\nabla c)-u\cdot\nabla n, &(x,t)\in \Omega\times (0,T), \displaystyle c_t=\Delta c-nc-u\cdot\nabla c,…

偏微分方程分析 · 数学 2016-01-18 Xinru Cao , Johannes Lankeit

In this work, we study the Neumann initial-boundary value problem for a two-species chemotaxis system with Lotka-Volterra competition and signal production. Under a rather weak and clean condition of sub-quadratic type damping and merely…

偏微分方程分析 · 数学 2023-01-18 Guoqiang Ren , Tian Xiang

This paper deals with a parabolic-elliptic chemotaxis-consumption system with tensor-valued sensitivity $S(x,n,c)$ under no-flux boundary conditions for $n$ and Robin-type boundary conditions for $c$. The global existence of bounded…

偏微分方程分析 · 数学 2023-05-03 Jaewook Ahn , Kyungkeun Kang , Jihoon Lee

In this paper, we consider initial-boundary value problems for two-component nonlinear systems of time-fractional diffusion equations with the homogeneous Neumann boundary condition and non-negative initial values. The main results are the…

偏微分方程分析 · 数学 2024-05-28 Dian Feng , Masahiro Yamamoto

This study handles spatial three-dimensional solution of the nonlinear diffusion equation without particular initial conditions. The functional behavior of the equation and the concentration have been studied in new ways. An auxiliary…

综合数学 · 数学 2020-03-16 Henrik Stenlund

The use of fully or partially absorbing boundary conditions for diffusion-based problems has become paradigmatic in physical chemistry and biochemistry to describe reactions occurring in solutions or in living media. However, as chemical…

统计力学 · 物理学 2022-12-13 Francesco Piazza

This paper considers the two-species chemotaxis-Stokes system with competitive kinetics under homogeneous Neumann boundary conditions in a three-dimensional bounded domain with smooth boundary. Both chemotaxis-fluid systems and two-species…

偏微分方程分析 · 数学 2018-05-23 Xinru Cao , Shunsuke Kurima , Masaaki Mizukami

In this paper the first equation within a class of well known chemotaxis systems is derived as a hydrodynamic limit from a stochastic interacting many particle system on the lattice. The cells are assumed to interact with attractive…

概率论 · 数学 2018-04-26 Stefan Grosskinsky , Daniel Marahrens , Angela Stevens

Consider the initial-boundary value problem for the 2-speed Carleman model of the Boltzmann equation of the kinetic theory of gases set in some bounded interval with boundary conditions prescribing the density of particles entering the…

偏微分方程分析 · 数学 2012-07-27 François Golse , Francesco Salvarani