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We consider an initial-boundary value problem for the time-fractional diffusion equation. We prove the equivalence of two notions of weak solutions, viscosity solutions and distributional solutions.

偏微分方程分析 · 数学 2021-08-26 Yoshikazu Giga , Hiroyoshi Mitake , Shoichi Sato

Motivated by the numerical investigation by Aoki et al. [1], we study a rarefied gas flow between two parallel infinite plates of the same temperature governed by the Boltzmann equation with diffuse reflection boundaries, where one plate is…

偏微分方程分析 · 数学 2024-12-02 Renjun Duan , Zhu Zhang

We consider the initial/boundary value problem for a diffusion equation involving multiple time-fractional derivatives on a bounded convex polyhedral domain. We analyze a space semidiscrete scheme based on the standard Galerkin finite…

数值分析 · 数学 2015-06-18 Bangti Jin , Raytcho Lazarov , Yikan Liu , Zhi Zhou

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

This paper is devoted to the mathematical analysis of a time-domain electromagnetic scattering by periodic structures which are known as diffraction gratings. The scattering problem is reduced equivalently into an initial-boundary value…

偏微分方程分析 · 数学 2016-04-05 Yixian Gao , Peijun Li

In this paper we present in one-dimensional space a numerical solution of a partial differential equation of fractional order. This equation describes a process of anomalous diffusion. The process arises from the interactions within the…

数值分析 · 数学 2007-05-23 Mariusz Ciesielski , Jacek Leszczynski

In many occurrences of fluid-structure interaction time-periodic motions are observed. We consider the interaction between a fluid driven by the three dimensional Navier-Stokes equation and a two dimensional linearized elastic Koiter shell…

偏微分方程分析 · 数学 2024-01-31 Claudiu Mîndrilă , Sebastian Schwarzacher

We establish the well-posedness of an initial-boundary value problem for a general class of time-fractional, advection-diffusion-reaction equations, allowing space- and time-dependent coefficients as well as initial data that may have low…

偏微分方程分析 · 数学 2020-03-24 William McLean , Kassem Mustapha , Raed Ali , Omar Knio

In this paper, we present a numerical solution to an ordinary differential equation of a fractional order in one-dimensional space. The solution to this equation can describe a steady state of the process of anomalous diffusion. The process…

数值分析 · 数学 2014-12-03 Mariusz Ciesielski , Jacek Leszczynski

We consider a chemotaxis-fluid system involving nonlinear cell diffusion of porous medium type, signal consumption by cells, and rather general, possibly matrix-valued, chemotactic sensitivities. It is shown that if the corresponding…

偏微分方程分析 · 数学 2015-01-29 Michael Winkler

We consider the well-posedness of the initial-boundary value problem for a time-fractional partial differential equation with the fractional order lying in (1,2]. For the case of time-dependent coefficients, it is difficult to give an…

偏微分方程分析 · 数学 2025-05-23 Xinchi Huang , Masahiro Yamamoto

Hyperbolic systems of the first and higher-order partial differential equations appear in many multiphysics problems. We will be dealing with a wave propagation problem in a piece-wise homogeneous medium. Mathematically, the problem is…

偏微分方程分析 · 数学 2025-03-28 Kayyunnapara Divya Joseph

We study the Brownian motion of a classical particle in one-dimensional inhomogeneous environments where the transition probabilities follow quasiperiodic or aperiodic distributions. Exploiting an exact correspondence with the…

统计力学 · 物理学 2009-10-31 F. Igloi , L. Turban , H. Rieger

The three-dimensional equations for the compressible flow of liquid crystals are considered. An initial-boundary value problem is studied in a bounded domain with large data. The existence and large-time behavior of a global weak solution…

偏微分方程分析 · 数学 2015-05-30 Dehua Wang , Cheng Yu

In this paper, we consider a class of initial-boundary value problems governed by pseudo-parabolic total variation flows. The principal characteristic of our problem lies in the velocity term of the diffusion flux, a feature that can bring…

偏微分方程分析 · 数学 2023-09-01 Toyohiko Aiki , Daiki Mizuno , Ken Shirakawa

We study an initial-boundary value problem of variable-order time-fractional diffusion equations in one space dimension. Based on the wellposedness of the proposed model and the smoothing properties of its solutions, which are shown to be…

偏微分方程分析 · 数学 2020-01-08 Xiangcheng Zheng , Jin Cheng , Hong Wang

We consider an initial mixed-boundary value problem for anisotropic fractional type degenerate parabolic equations posed in bounded domains. Namely, we consider that the boundary of the domain splits into two parts. In one of them, we…

偏微分方程分析 · 数学 2021-12-07 Gerardo Huaroto , Wladimir Neves

We consider the equations which describe polytropic one-dimensional flows of viscous compressible multifluids. We prove global existence and uniqueness of a solution to the initial-boundary value problem which corresponds to the flow in a…

偏微分方程分析 · 数学 2019-02-20 Alexander Mamontov , Dmitriy Prokudin

This paper is devoted to study the existence of solutions and the monotone method of second-order periodic boundary value problems when the lower and upper solutions $\alpha$ and $\beta$ violate the boundary conditions $…

经典分析与常微分方程 · 数学 2016-10-25 Faouzi Haddouchi , Slimane Benaicha

In this paper, diffusion in polymer solutions undergoing evaporation of solvent is modeled as a coupled heat and mass transfer problem with moving boundary condition within the framework of nonequilibrium thermodynamics. The proposed…

化学物理 · 物理学 2012-04-13 Siamak. Shams Es-haghi