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We consider higher order viscous Burgers' equations with generalized nonlinearity and study the associated initial value problems for given data in the $L^2$-based Sobolev spaces. We introduce appropriate time weighted spaces to derive…

偏微分方程分析 · 数学 2015-06-02 Xavier Carvajal , Mahendra Panthee

In this paper, we introduce a new approach to solving the porous medium equation using a moving mesh finite element method that leverages the Onsager variational principle as an approximation tool. Both the continuous and discrete problems…

数值分析 · 数学 2024-04-01 Si Xiao , Xianmin Xu

In this work we prove that the initial-boundary value problem (IBVP) for the fifth order Korteweg-de Vries equation \begin{align*} \left. \begin{array}{rlr} u_t+\partial_x^5 u+u\partial_x u&\hspace{-2mm}=0,&\quad x\in\mathbb R^+,\;…

偏微分方程分析 · 数学 2024-05-15 Eddye Bustamante , José Jiménez Urrea , Jorge Mejía

When water is present in a medium with pore sizes in a range around 10nm the corresponding freezing point depression will cause long range broadening of a melting front. Describing the freezing-point depression by the Gibbs-Thomson equation…

软凝聚态物质 · 物理学 2025-08-08 Eirik G. Flekkøy , Erika Eiser , Alex Hansen

In this short note, we study the local well-posedness of a 3D model for incompressible Navier-Stokes equations with partial viscosity. This model was originally proposed by Hou-Lei in \cite{HouLei09a}. In a recent paper, we prove that this…

偏微分方程分析 · 数学 2015-03-13 Thomas Y. Hou , Zuoqiang Shi , Shu Wang

We establish the global well-posedness of the Landau-Lifshitz-Gilbert equation in $\mathbb R^n$ for any initial data ${\bf m}_0\in H^1_*(\mathbb R^n,\mathbb S^2)$ whose gradient belongs to the Morrey space $M^{2,2}(\mathbb R^n)$ with small…

偏微分方程分析 · 数学 2013-10-01 Junyu Lin , Baishun Lai , Changyou Wang

We prove the non-existence and strong ill-posedness of the Incompressible Porous Media (IPM) equation for initial data that are small $H^2(\mathbb{R}^2)$ perturbations of the linearly stable profile $-x_2$. A remarkable novelty of the proof…

偏微分方程分析 · 数学 2024-10-03 Roberta Bianchini , Diego Córdoba , Luis Martínez-Zoroa

We present an algorithm for the numerical solution of the equations governing combustion in porous inert media. The discretization of the flow problem is performed by the mixed finite element method, the transport problems are discretized…

数值分析 · 数学 2016-09-01 Peter Knabner , Gerhard Summ

We study well-posedness and equivalence of different notions of solutions with finite energy for nonlocal porous medium type equations of the form $$\partial_tu-A\varphi(u)=0.$$ These equations are possibly degenerate nonlinear diffusion…

偏微分方程分析 · 数学 2017-03-08 Félix del Teso , Jørgen Endal , Espen R. Jakobsen

An accurate modeling of reactive flows in fractured porous media is a key ingredient to obtain reliable numerical simulations of several industrial and environmental applications. For some values of the physical parameters we can observe…

数值分析 · 数学 2020-11-10 Luca Formaggia , Alessio Fumagalli , Anna Scotti

This work investigates how we can extend the invariant subspace method to two-dimensional time-fractional non-linear PDEs. More precisely, the systematic study has been provided for constructing the various dimensions of the invariant…

偏微分方程分析 · 数学 2022-01-03 P. Prakash , K. S. Priyendhu , K. M. Anjitha

We study the two-dimensional Muskat problem in a horizontally periodic setting and for fluids with arbitrary densities and viscosities. We show that in the presence of surface tension effects the Muskat problem is a quasilinear parabolic…

偏微分方程分析 · 数学 2018-04-30 Bogdan-Vasile Matioc

Maxwell equations are solved in a layer comprising a finite number of homogeneous isotropic dielectric regions ended by anisotropic perfectly matched layers (PMLs). The boundary-value problem is solved and the dispersion relation inside the…

光学 · 物理学 2009-11-10 Diana C. Skigin

We investigate well-posedness for martingale solutions of stochastic differential equations, under low regularity assumptions on their coefficients, widely extending some results first obtained by A. Figalli. Our main results are a very…

概率论 · 数学 2015-08-26 Dario Trevisan

We are concerned with the large-time behavior of solutions to the initial and initial boundary value problems with large initial data for the compressible Navier-Stokes system with degenerate heat-conductivity describing the one-dimensional…

偏微分方程分析 · 数学 2024-07-19 Kexin Li , Xiaojing Xu

A system of diffusion-reaction equations coupled with a dissolution-precipitation model is discussed. We start by introducing a microscale model together with its homogenized version. In the present paper, we first derive the corrector…

偏微分方程分析 · 数学 2023-09-27 Nibedita Ghosh , Hari Shankar Mahato

Modeling coupled processes in fractured porous media -- flow, deformation, fracture mechanics, and thermal/chemical effects -- often relies on mixed dimensional multiphysics formulations. These systems are nonlinear and depend on physical…

地球物理 · 物理学 2026-03-03 Jakub Wiktor Both , Inga Berre

We establish the existence of global weak solution in 2D and 3D, as well as the uniqueness of weak solution in 2D, for the Darcy-Boussinesq model for convection in layered porous media with square integrable initial data. We also derived…

偏微分方程分析 · 数学 2024-11-19 Yining Cao , Weisheng Niu , Xiaoming Wang

We prove the global strong solvability of a quasilinear initial-boundary value problem with fractional time derivative of order less than one. Such problems arise in mathematical physics in the context of anomalous diffusion and the…

偏微分方程分析 · 数学 2011-06-06 Rico Zacher

The conventional theory of combustion describes systems where all of the parameters are spatially homogeneous. On the other hand, combustion in disordered explosives has long been known to occur after local regions of the material, called…

无序系统与神经网络 · 物理学 2018-06-21 Mauro Schiulaz , Christopher R. Laumann , Alexander V. Balatsky , Boris Z. Spivak