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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 consider a class of viscous fluids with a general monotone dependence of the viscous stress on the symmetric velocity gradient. We introduce the concept of dissipative solution to the associated initial boundary value problem inspired by…

偏微分方程分析 · 数学 2019-06-04 A. Abbatiello , E. Feireisl

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 derive general conditions of slip of a fluid on the boundary. Under these conditions the velocity of the fluid on the immovable boundary is a function of the normal and tangential components of the force acting on the surface of the…

数学物理 · 物理学 2007-05-23 R. H. W. Hoppe , W. G. Litvinov

The two-dimensional flow of viscous incompressible fluid in the domain between two concentric circles is investigated numerically. To solve the problem, the low-order Galerkin models are used. When the inner circle rotates fast enough, two…

流体动力学 · 物理学 2009-05-13 N. V. Petrovskaya , M. Yu. Zhukov

We consider the Navier-Stokes system with Oseen and rotational terms describing the stationary flow of a viscous incompressible fluid around a rigid body moving at a constant velocity and rotating at a constant angular velocity. In a…

偏微分方程分析 · 数学 2015-11-13 Paul Deuring , Stanislav Kracmar , Sarka Necasova

The object of this paper is twofold. Firstly, we study a class of generalized Newtonian fluid related to "power law ". For the corresponding non-Newtonian Navier-Stokes problems, the existence of a weak and periodic solutions is proved in…

偏微分方程分析 · 数学 2017-01-20 Rodolfo Salvi

We develop a new boundary condition for the weak inverse mean curvature flow, which gives canonical and non-trivial solutions in bounded domains. Roughly speaking, the boundary of the domain serves as an outer obstacle, and the evolving…

微分几何 · 数学 2025-02-10 Kai Xu

We investigate parameteric Navier-Stokes equations for a viscous, incompressible flow in bounded domains. The coefficients of the equations are perturbed by high-dimensional random parameters, this fits in particular for modelling flows in…

数值分析 · 数学 2025-04-21 Alexey Chernov , Tung Le

We consider the inverse problem of the detection of a single body, immersed in a bounded container filled with a fluid which obeys the Stokes equations, from a single measurement of force and velocity on a portion of the boundary. We obtain…

偏微分方程分析 · 数学 2015-05-18 Andrea Ballerini

We study a coupled system of Navier-Stokes equation and the equation of conservation of mass in a one-dimensional network. The system models the blood circulation in arterial networks. A special feature of the system is that the equations…

数学物理 · 物理学 2007-05-23 Weihua Ruan , M. E. Clark , Meide Zhao , Anthony Curcio

This paper is devoted to the well-posedness analysis of a nonstationary Stokes hemivariational inequality for an incompressible fluid flow described by the Stokes equations subject to a nonsmooth boundary condition of friction type…

数值分析 · 数学 2026-03-31 Weimin Han , Shengda Zeng

In this paper, we are first interested in the compressible Navier-Stokes equations with densitydependent viscosities in bounded domains with on-homogeneous Dirichlet conditions. We study the wellposedness of such models with non-constant…

偏微分方程分析 · 数学 2009-06-09 Laurent Chupin , Rémy Sart

We consider electrodiffusion of ions in fluids, described by the Nernst-Planck-Navier-Stokes system, in three dimensional bounded domains, with mixed blocking (no-flux) and selective (Dirichlet) boundary conditions for the ionic…

偏微分方程分析 · 数学 2022-12-15 Fizay-Noah Lee

In recent years, stochastic effects have become increasingly relevant for describing fluid behaviour, particularly in the context of turbulence. The most important model for inviscid fluids in computational fluid dynamics are the Euler…

数值分析 · 数学 2024-12-11 Dominic Breit , Thamsanqa Castern Moyo , Philipp Öffner

We propose a mixed finite element method for the motion of a strongly viscous, ideal, and isentropic gas. At the boundary we impose a Navier-slip condition such that the velocity equation can be posed in mixed form with the vorticity as an…

数值分析 · 数学 2009-11-11 Kenneth Karlsen , Trygve Karper

We investigate the dynamics of several slender rigid bodies moving in a flow driven by the three-dimensional steady Stokes system in presence of a smooth background flow. More precisely we consider the limit where the thickness of these…

偏微分方程分析 · 数学 2024-12-31 Richard M. Höfer , Christophe Prange , Franck Sueur

This study investigates unsteady boundary layer phenomena in electrically conducting fluids subjected to static magnetic fields. Using a semi-explicit similarity transformation method, the momentum equation associated with the Stokes stream…

流体动力学 · 物理学 2025-04-10 Jing-Yu Fu , Ming-Jiu Ni , Nian-Mei Zhang

Fluid flows are typically studied by solving the Navier--Stokes equation. One of the fundamental assumptions of this equation is Stokes' hypothesis. This hypothesis assumes bulk viscosity, to be identically zero. The Stokes' hypothesis is a…

流体动力学 · 物理学 2023-03-16 Bhanuday Sharma , Rakesh Kumar

We consider a projection method for time-dependent incompressible Navier-Stokes equations with a total pressure boundary condition. The projection method is one of the numerical calculation methods for incompressible viscous fluids often…

数值分析 · 数学 2021-06-03 Kazunori Matsui