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In this paper we prove the existence of weak solutions for a thermodynamically consistent phase-field model introduced in [26] in two and three dimensions of space. We use a notion of solution inspired by [18], where the pointwise internal…

偏微分方程分析 · 数学 2019-07-31 Robert Lasarzik , Elisabetta Rocca , Giulio Schimperna

In this work, we introduce a notion of dissipative weak solution for a system describing the evolution of a heat-conducting incompressible non-Newtonian fluid. This concept of solution is based on the balance of entropy instead of the…

偏微分方程分析 · 数学 2022-06-13 Pablo Alexei Gazca-Orozco , Victoria Patel

We study a model for induction hardening of steel. The related differential system consists of a time domain vector potential formulation of the Maxwell's equations coupled with an internal energy balance and an ODE for the volume fraction…

偏微分方程分析 · 数学 2014-01-10 D. Hoemberg , T. Petzold , E. Rocca

We establish weak-strong uniqueness and stability properties of renormalised solutions to a class of energy-reaction-diffusion systems. The systems considered are motivated by thermodynamically consistent models, and their formal entropy…

偏微分方程分析 · 数学 2022-05-03 Katharina Hopf

In this article, we study a thermodynamically consistent thermo-visco-elastic model describing the balance of internal energy in a heat-conducting inelastic body. In the considered problem, the temperature dependence appears in both the…

偏微分方程分析 · 数学 2025-11-13 Tomasz Cieślak , Sebastian Owczarek , Karolina Wielgos

The dynamics of multicomponent gas mixtures with vanishing barycentric velocity is described by Maxwell-Stefan equations with mass diffusion and heat conduction. The equations consist of the mass and energy balances, coupled to an algebraic…

偏微分方程分析 · 数学 2023-04-03 Stefanos Georgiadis , Ansgar Jüngel

Thermodynamically consistent models for two-phase flow in porous media have attracted significant attention in recent years. In this paper, we prove the existence, uniqueness and regularity of the weak solution to such a recent model…

偏微分方程分析 · 数学 2026-02-05 Huangxin Chen , Jisheng Kou , Haitao Leng , Shuyu Sun , Hai Zhao

In this paper we investigate the existence of solutions and their weak-strong uniqueness property for a PDE system modelling damage in viscoelastic materials. In fact, we address two solution concepts, weak and strong solutions. For the…

偏微分方程分析 · 数学 2024-09-04 Robert Lasarzik , Elisabetta Rocca , Riccarda Rossi

We introduce the notion of relative entropy for the weak solutions of the compressible Navier-Stokes system. We show that any finite energy weak solution satisfies a relative entropy inequality for any pair of sufficiently smooth test…

偏微分方程分析 · 数学 2015-06-03 Eduard Feireisl , Bum Ja Jin , Antonin Novotny

Weak-strong uniqueness property in the class of finite energy weak solutions is established for two different compressible liquid crystal systems by the method of relative entropy. To overcome the difficulties caused by the molecular…

偏微分方程分析 · 数学 2012-05-08 Yong-Fu Yang , Changsheng Dou , Qiangchang Ju

We give conditions that guarantee uniqueness of renormalized solutions for the Maxwell-Stefan system. The proof is based on an identity for the evolution of the symmetrized relative entropy. Using the method of doubling the variables we…

偏微分方程分析 · 数学 2024-07-10 Stefanos Georgiadis , Hoyoun Kim , Athanasios E. Tzavaras

In this paper, we consider a coupled PDE system describing phase separation and damage phenomena in elastically stressed alloys in the presence of inertial effects. The material is considered on a bounded Lipschitz domain with mixed…

偏微分方程分析 · 数学 2016-09-16 Christian Heinemann , Christiane Kraus

In this paper, we showed that for some given suitable density and pressure, there exist infinitely many compactly supported solutions with prescribed energy profile. The proof is mainly based on the convex integration scheme. We construct…

偏微分方程分析 · 数学 2024-05-15 Anxiang Huang

We study the weak finite element method solving convection-diffusion equations. A weak finite element scheme is presented based on a spacial variational form. We established a weak embedding inequality that is very useful in the weak finite…

数值分析 · 数学 2015-06-10 Tie Zhang , Yanli Chen

We consider a hydrodynamic model of self-organized evolution of agents, with singular interaction kernel $\phi_\alpha(x)=1/|x|^{1+\alpha}$ ($0<\alpha<2$), in the presence of an additional external force. Well-posedness results are already…

偏微分方程分析 · 数学 2018-12-05 Trevor M. Leslie

We establish a weak-strong uniqueness result for the isentropic compressible Euler equations, that is: As long as a sufficiently regular solution exists, all energy-admissible weak solutions with the same initial data coincide with it. The…

偏微分方程分析 · 数学 2021-03-31 Shyam Sundar Ghoshal , Animesh Jana , Emil Wiedemann

The weak-strong uniqueness of solutions to a broad class of cross-diffusion systems with volume filling is established. In general, the diffusion matrices are neither symmetric nor positive definite. This issue is overcome by supposing that…

偏微分方程分析 · 数学 2025-10-01 Maria Heitzinger , Ansgar Jüngel

This article is devoted to a generalized version of Smoluchowski's coagulation equation. This model describes the time evolution of a system of aggregating particles under the effect of external input and output particles. We show that for…

偏微分方程分析 · 数学 2023-06-16 Prasanta Kumar Barik , Asha K. Dond , Rakesh Kumar

We establish a weak-strong uniqueness principle for the two-phase Mullins-Sekerka equation in the plane: As long as a classical solution to the evolution problem exists, any weak De Giorgi type varifold solution (see for this notion the…

偏微分方程分析 · 数学 2024-04-04 Julian Fischer , Sebastian Hensel , Tim Laux , Theresa M. Simon

The coupled Navier-Stokes/Allen-Cahn system is a simple model to describe phase separation in two-component systems interacting with an incompressible fluid flow. We demonstrate the \emph{weak-strong uniqueness} result for this system in a…

偏微分方程分析 · 数学 2017-11-15 Radim Hošek , Václav Mácha
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