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We introduce and analyze a partially augmented fully-mixed formulation and a mixed finite element method for the coupled problem arising in the interaction between a free fluid and a poroelastic medium. The flows in the free fluid and…

数值分析 · 数学 2023-05-02 Tongtong Li , Sergio Caucao , Ivan Yotov

In this paper we propose and analyse a new formulation and pointwise divergence-free mixed finite element methods for the numerical approximation of Darcy--Brinkman equations in vorticity--velocity--pressure form, coupled with a transport…

数值分析 · 数学 2024-07-04 Russel Demos , Rashmi Dubey , Ricardo Ruiz-Baier , Segundo Villa-Fuentes

This short paper is an introduction of the memoir recently written by the two authors (see [D.Bresch., P.--E. Jabin, arXiv:1507.04629, (2015)]) which concerns the resolution of two longstanding problems: Global existence of weak solutions…

偏微分方程分析 · 数学 2016-05-19 D. Bresch , P. -E. Jabin

The system of Navier--Stokes--Fourier equations is one of the most celebrated systems of equations in modern science. It describes dynamics of fluids in the limit when gradients of density, velocity and temperature are sufficiently small,…

统计力学 · 物理学 2017-11-03 A. N. Gorban , I. V. Karlin

We consider the stationary incompressible Navier-Stokes equation in the half-plane with inhomogeneous boundary condition. We prove existence of strong solutions for boundary data close to any Jeffery-Hamel solution with small flux evaluated…

偏微分方程分析 · 数学 2016-11-29 Julien Guillod , Peter Wittwer

In this paper we consider a fluid-structure interaction problem given by the steady Navier Stokes equations coupled with linear elasticity taken from [Lasiecka, Szulc, and Zochoswki, Nonl. Anal.: Real World Appl., 44, 2018]. An elastic body…

最优化与控制 · 数学 2021-09-07 Michael Hintermüller , Axel Kröner

We study a finite element computational model for solving the coupled problem arising in the interaction between a free fluid and a fluid in a poroelastic medium. The free fluid is governed by the Stokes equations, while the flow in the…

数值分析 · 数学 2017-10-19 Ilona Ambartsumyan , Eldar Khattatov , Ivan Yotov , Paolo Zunino

This paper introduces a novel weak Galerkin (WG) finite element method for the numerical solution of the Brinkman equations. The Brinkman model, which seamlessly integrates characteristics of both the Stokes and Darcy equations, is employed…

数值分析 · 数学 2025-07-09 Chunmei Wang , Shangyou Zhang

We consider a Stokes flow coupled with advective-diffusive transport in an evolving domain with boundary conditions allowing for inflow and outflow. The evolution of the domain is induced by the transport process, leading to a fully coupled…

偏微分方程分析 · 数学 2026-02-10 Kilian Hacker , Maria Neuss-Radu

We prove existence of weak solutions to a diffuse interface model describing the flow of a fluid through a deformable porous medium consisting of two phases. The system non-linearly couples Biot's equations for poroelasticity, including…

偏微分方程分析 · 数学 2024-08-27 Helmut Abels , Harald Garcke , Jonas Haselböck

In this work we develop a fictitious domain method for the Stokes problem which allows computations in domains whose boundaries do not depend on the mesh. The method is based on the ideas of Xfem and has been first introduced for the…

数值分析 · 数学 2014-01-06 Sébastien Court , Michel Fournié , Alexei Lozinski

We prove the existence of time-periodic weak solutions for a fluid-structure interaction system coupling the incompressible Navier-Stokes equations in a three-dimensional moving domain with a nonlinear Koiter plate equation on its upper…

偏微分方程分析 · 数学 2026-05-20 Claudiu Mîndrilă

We prove the existence of a weak solution to the three-dimensional steady compressible isentropic Navier-Stokes equations in bounded domains for any specific heat ratio \gamma > 1. Generally speaking, the proof is based on the new weighted…

偏微分方程分析 · 数学 2013-05-27 Song Jiang , Chunhui Zhou

We prove existence of global in time weak solutions to a compressible two-fluid Stokes system with a single velocity field and algebraic closure for the pressure law. The constitutive relation involves densities of both fluids through an…

偏微分方程分析 · 数学 2018-12-05 Didier Bresch , Piotr B. Mucha , Ewelina Zatorska

Within the framework of variational modelling we derive a one-phase moving boundary problem describing the motion of a semipermeable membrane enclosing a viscous liquid, driven by osmotic pressure and surface tension of the membrane. For…

偏微分方程分析 · 数学 2019-02-20 Friedrich Lippoth , Mark A. Peletier , Georg Prokert

We investigate the existence of weak solutions to a multi-component system, consisting of compressible chemically reacting components, coupled with the compressible Stokes equation for the velocity. Specifically, we consider the case of…

偏微分方程分析 · 数学 2025-08-26 Piotr B. Mucha , Sarka Necasova , Maja Szlenk

In this paper we introduce a constructive approach to study well-posedness of solutions to stochastic fluid-structure interaction with stochastic noise. We focus on a benchmark problem in stochastic fluid-structure interaction, and prove…

偏微分方程分析 · 数学 2022-03-31 Jeffrey Kuan , Sunčica Čanić

We investigate a coupling between the compressible Navier-Stokes-Fourier system and the full Maxwell-Stefan equations. This model describes the motion of chemically reacting heat-conducting gaseous mixture. The viscosity coefficients are…

偏微分方程分析 · 数学 2014-05-06 Piotr Bogsław Mucha , Milan Pokorný , Ewelina Zatorska

In the present work, we consider the evolution of two fluids separated by a sharp interface in the presence of surface tension - like, for example, the evolution of oil bubbles in water. Our main result is a weak-strong uniqueness principle…

偏微分方程分析 · 数学 2020-02-26 Julian Fischer , Sebastian Hensel

We investigate a new diffuse-interface model that describes creeping two-phase flows (i.e., flows exhibiting a low Reynolds number), especially flows that permeate a porous medium. The system of equations consists of a Brinkman equation for…

偏微分方程分析 · 数学 2025-09-15 Pierluigi Colli , Patrik Knopf , Giulio Schimperna , Andrea Signori