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We investigate the Cauchy problem to the compressible planar non-resistive magnetohydrodynamic equations with zero heat conduction. The global existence of strong solutions to such a model has been established by Li and Li (J. Differential…

偏微分方程分析 · 数学 2023-02-17 Jinkai Li , Mingjie Li , Yang Liu , Xin Zhong

It is well-known that due to the lack of a technique to obtain the a-priori $L^{\infty}$ estimate of the artificial viscosity solutions of the Cauchy problem for the one-dimensional Euler-Poisson (or hydrodynamic) model for semiconductors,…

偏微分方程分析 · 数学 2020-03-04 Yun-guang Lu

Global existence of very weak solutions to a non-local diffusion-advection-reaction equation is established under no-flux boundary conditions in higher dimensions. The equation features degenerate myopic diffusion and nonlocal adhesion and…

偏微分方程分析 · 数学 2024-10-18 Maria Eckardt , Anna Zhigun

In this paper, we study the nonexistence of global weak solutions for a wave equation with nonlinear memory and damping terms. We give an answer to an open problem posed in [M. D'Abbicco, A wave equation with structural damping and…

偏微分方程分析 · 数学 2024-12-20 Quanguo Zhang

This paper studies finite volume schemes for scalar hyperbolic conservation laws on evolving hypersurfaces of $\mathbb{R}^3$. We compare theoretical schemes assuming knowledge of all geometric quantities to (practical) schemes defined on…

数值分析 · 数学 2014-11-13 Jan Giesselmann , Thomas Müller

The analysis of non-local regularisations of scalar conservation laws is an active research program. Applications of such equations are found in the modelling of physical phenomena such as traffic flow. In this paper, we propose a novel…

偏微分方程分析 · 数学 2026-01-14 Shyam Sundar Ghoshal , Parasuram Venkatesh , Emil Wiedemann

The moment of entropy equation for vector-BGK model results in the entropy equation for macroscopic model. However, this is usually not the case in numerical methods because the current literature consists only of entropy conserving/stable…

数值分析 · 数学 2023-10-31 Megala Anandan , S. V. Raghurama Rao

We use the technique developed in [32]-[33] to construct the upper and the lower bounds for classes of problems containing non-local terms, including problems in micromagnetics and problems arising in the variational study of the Method of…

偏微分方程分析 · 数学 2015-02-10 Arkady Poliakovsky

We present a convergence result from nonlocal to local behavior for a system of nonlocal balance laws. The velocity field of the underlying conservation laws is diagonal. In contrast, the coupling to the remaining balance laws involves a…

偏微分方程分析 · 数学 2023-09-08 Felisia Angela Chiarello , Alexander Keimer

We are interested in the approximation of a steady hyperbolic problem. In some cases, the solution can satisfy an additional conservation relation, at least when it is smooth. This is the case of an entropy. In this paper, we show, starting…

数值分析 · 数学 2018-08-01 Remi Abgrall

We extend the residue-based Robson-Villari-Biancalana (RVB) method from the calculation of Hawking temperature to the determination of black hole entropy within f(Q) gravity. Starting from the residue-corrected temperature prescription…

广义相对论与量子宇宙学 · 物理学 2026-04-08 Wen-Xiang Chen

This paper addresses the issue of global existence of so-called $\kappa$-entropy solutions to the Navier-Stokes equations for viscous compressible and barotropic fluids with degenerate viscosities. We consider the three dimensional space…

偏微分方程分析 · 数学 2015-03-19 Didier Bresch , Benoit Desjardins , Ewelina Zatorska

We study the Cauchy problem associated with the system of two conservation laws arising in isothermal gas dynamics, in which the pressure and the density are related by the $\gamma$-law equation $p(\rho) \sim \rho^\gamma$ with $\gamma =1$.…

偏微分方程分析 · 数学 2009-11-13 Philippe G. LeFloch , Vladimir Shelukhin

In this paper, we introduce a hyperbolic model for entropy dissipative system of viscous conservation laws via a flux relaxation approach. We develop numerical schemes for the resulting hyperbolic relaxation system by employing the…

数值分析 · 数学 2023-12-20 Tuowei Chen , Jiequan Li

We establish a linear $L^p$ rate of convergence, $1<p<\infty$, with respect to the viscosity $\varepsilon$ for the vanishing viscosity process of semiconcave solutions of Hamilton-Jacobi equations by regularizing the PDE with the…

偏微分方程分析 · 数学 2024-12-23 Alessandro Goffi

We introduce the notion of entropy solutions (e.s.) to a conservation law with an arbitrary jump continuous flux vector and prove existence of the largest and the smallest e.s. to the Cauchy problem. The monotonicity and stability…

偏微分方程分析 · 数学 2022-05-18 Evgeny Yu. Panov

We study the Cauchy problem of three-dimensional compressible non-isentropic magnetohydrodynamic (MHD) fluids with both interior and far field vacuum states. Applying delicate energy estimates, initial layer analysis, and continuation…

偏微分方程分析 · 数学 2024-08-23 Yang Liu , Xin Zhong

In this work, we establish a class of globally defined, large solutions to the free boundary problem of compressible Navier-Stokes equations with constant shear viscosity and vanishing bulk viscosity. We establish such solutions with…

偏微分方程分析 · 数学 2018-11-06 Xin Liu , Yuan Yuan

We consider the compressible Oldroyd-B model derived in \cite{Barrett-Lu-Suli}, where the existence of global-in-time finite energy weak solutions was shown in two dimensional setting. In this paper, we first state a local well-posedness…

偏微分方程分析 · 数学 2017-05-04 Yong Lu , Zhifei Zhang

The present paper first aims to study the BV-type regularity for viscosity solutions of the Hamilton-Jacobi equation \[ u_t(t,x)+H\big(D_{x} u(t,x)\big)~=~0\qquad\forall (t,x)\in ]0,\infty[\times\mathbb{R}^d \] with a coercive and uniformly…

偏微分方程分析 · 数学 2022-02-02 Stefano Bianchini , Prerona Dutta , Khai T. Nguyen
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