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We study the Stokes--Poisson--Boltzmann equations with Dirichlet and Navier boundary conditions. The system consists of the incompressible Stokes equations coupled with a nonlinear Poisson--Boltzmann equation through electrostatic forcing…

数值分析 · 数学 2026-04-15 Ayush Agrawal , Aparna Bansal , D. N. Pandey

In this paper, we establish the unique existence and some decay properties of a global solution of a free boundary problem of the incompressible Navier-Stokes equations in $L_p$ in time and $L_q$ in space framework in a uniformly…

偏微分方程分析 · 数学 2022-02-24 Kenta Oishi , Yoshihiro Shibata

We present a finite-difference scheme which solves the Stokes problem in the presence of curvilinear non-conforming interfaces and provides second-order accuracy on physical field (velocity, vorticity) and especially on pressure. The gist…

流体动力学 · 物理学 2011-10-07 Abdelkader Hammouti , Anaël Lemaître

In this paper, we continue our work in [15] to derive {\epsilon}-regularity criteria at one scale without pressure for suitable weak solutions to the Navier-Stokes equations. We establish a $\varepsilon$-regularity criterion below of…

偏微分方程分析 · 数学 2018-11-27 Yanqing Wang , Gang Wu , Daoguo Zhou

We consider the homogenisation of the Stokes equations in a porous medium which is evolving in time. At the interface of the pore space and the solid part, we prescribe an inhomogeneous Dirichlet boundary condition, which enables to model a…

偏微分方程分析 · 数学 2021-09-14 David Wiedemann , Malte A. Peter

We consider the sedimentation of $N$ spherical particles with identical radii $R$ in a Stokes flow in $\mathbb R^3$. The particles satisfy a no-slip boundary condition and are subject to constant gravity. The dynamics of the particles is…

偏微分方程分析 · 数学 2023-11-06 Richard M. Höfer , Richard Schubert

Convergence results for the immersed boundary method applied to a model Stokes problem with the homogeneous Dirichlet boundary condition are presented. As a discretization method, we deal with the finite element method. First, the immersed…

数值分析 · 数学 2020-01-24 Norikazu Saito , Yoshiki Sugitani

Stents are medical devices designed to modify blood flow in aneurysm sacs, in order to prevent their rupture. Some of them can be considered as a locally periodic rough boundary. In order to approximate blood flow in arteries and vessels of…

偏微分方程分析 · 数学 2009-01-20 Eric Bonnetier , Didier Bresch , Vuk Milisic

In this work, we present some new Carleman inequalities for Stokes and Oseen equations with non-homogeneous boundary conditions. These estimates lead to log type stability inequalities for the problem of recovering the solution of the…

偏微分方程分析 · 数学 2022-07-19 Mehdi Badra , Fabien Caubet , Jérémi Dardé

We consider Stokes systems with measurable coefficients and Lions-type boundary conditions. We show that, in contrast to the Dirichlet boundary conditions, local boundary mixed-norm $L_{s,q}$-estimates hold for the spatial second-order…

偏微分方程分析 · 数学 2022-01-21 Hongjie Dong , Doyoon Kim , Tuoc Phan

In this paper we are concerned with the steady Navier-Stokes and Stokes problems with mixed boundary conditions involving Tresca slip, leak condition, one-sided leak conditions, velocity, pressure, rotation, stress and normal derivative of…

偏微分方程分析 · 数学 2016-11-28 Tujin Kim , Daomin Cao

The Stokes resolvent problem $\lambda u - \Delta u + \nabla \phi = f$ with $\mathrm{div}(u) = 0$ subject to homogeneous Dirichlet or homogeneous Neumann-type boundary conditions is investigated. In the first part of the paper we show that…

偏微分方程分析 · 数学 2019-11-15 Patrick Tolksdorf

We consider the Stokes equations on a bounded perforated domaincompleted with non-zero constant boundary conditions on the holes. We investigate configurations forwhich the holes are identical spheres and their number N goes to infinity…

偏微分方程分析 · 数学 2018-06-06 Matthieu Hillairet

We consider the Stokes system in $\mathbb R^3,$ deprived of $N$ spheres of radius $1/N,$ completed by constant boundary conditions on the spheres. This problem models the instantaneous response of a viscous fluid to an immersed cloud of…

偏微分方程分析 · 数学 2020-01-08 Kleber Carrapatoso , Matthieu Hillairet

We study the zero-viscosity limit of free boundary Navier-Stokes equations with surface tension in $\mathbb{R}^3$ thus extending the work of Masmoudi and Rousset [1] to take surface tension into account. Due to the presence of boundary…

偏微分方程分析 · 数学 2017-10-09 Tarek Elgindi , Donghyun Lee

We present an exact solution for the time-dependent Stokes problem of an infinite cylinder of radius r=a in a fluid with harmonic boundary conditions at infinity. This is a 3-dimensional problem but, because of translational invariance…

数学物理 · 物理学 2008-04-14 Andreas N. Vollmayr , Jan-Moritz P. Franosch , J. Leo van Hemmen

We study well-posedness of a velocity-vorticity formulation of the Navier--Stokes equations, supplemented with no-slip velocity boundary conditions, a no-penetration vorticity boundary condition, along with a natural vorticity boundary…

偏微分方程分析 · 数学 2017-08-09 Maxim A. Olshanskii , Leo G. Rebholz , Abner J. Salgado

We consider the two-dimensional Navier-Stokes equations subject to the Dirichlet boundary condition in a half plane for initial vorticity with finite measures. We study local well-posedness of the associated vorticity equations for measures…

偏微分方程分析 · 数学 2019-04-09 Ken Abe

Due to computational complexity, fluid flow problems are mostly defined on a bounded domain. Hence, capturing fluid outflow calls for imposing an appropriate condition on the boundary where the said outflow is prescribed. Usually, the…

偏微分方程分析 · 数学 2021-09-22 John Sebastian H. Simon , Hirofumi Notsu

We develop a mathematically and physically sound definition of the spectrally-hyperviscous Navier-Stokes equations (SHNSE) on general bounded domains \Omega with zero (no-slip) boundary conditions prescribed on \varGamma=\partial\varOmega.…

偏微分方程分析 · 数学 2019-08-30 Joel Avrin