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In this paper, we extend our study of mass transport in multicomponent isothermal fluids to the incompressible case. For a mixture, incompressibility is defined as the independence of average volume on pressure, and a weighted sum of the…

偏微分方程分析 · 数学 2020-05-26 Dieter Bothe , Pierre-Etienne Druet

We show that a reformulation of the governing equations for incompressible multi-phase flow in the volume of fluid setting leads to a well defined energy rate. Weak nonlinear inflow-outflow and solid wall boundary conditions complement the…

偏微分方程分析 · 数学 2024-12-31 Jan Nordström , Arnaud. G. Malan

The evolution of a pair of point vortices in whole space, subject to the inviscid Euler equations for incompressible fluid flow, is solved exactly for rotationally symmetric initial conditions. This exact solution shows that the vortex…

流体动力学 · 物理学 2015-07-08 Matthew Radley Brown

This paper is concerned with a mathematical model which describes 2-D flows of an incompressible viscoelastic fluid of Oldroyd type in a bounded domain. We prove the existence and uniqueness theorem for global (in time) weak solutions and…

偏微分方程分析 · 数学 2017-08-15 Mikhail A. Artemov , George G. Berdzenishvili

In a recent paper, a continuum theory of immiscible and incompressible two-phase flow in porous media based on generalized thermodynamic principles was formulated (Transport in Porous Media, 125, 565 (2018)). In this theory, two immiscible…

流体动力学 · 物理学 2025-02-05 Håkon Pedersen , Alex Hansen

In this article we consider the inhomogeneous incompressible Euler equations describing two fluids with different constant densities under the influence of gravity as a differential inclusion. By considering the relaxation of the…

偏微分方程分析 · 数学 2021-06-15 Björn Gebhard , József J. Kolumbán , László Székelyhidi

Flows of one-dimensional continuum in Lagrangian coordinates are studied in the paper. Equations describing these flows are reduced to a single Euler-Lagrange equation which contains two undefined functions. Particular choices of the…

数学物理 · 物理学 2018-12-12 E. I. Kaptsov , S. V. Meleshko

We present a technique that allows to obtain certain results in the compressible fluid theory: in particular, it is a nonexistence result for the highly decreasing at infinity solutions to the Navier-Stokes equations, the construction of…

偏微分方程分析 · 数学 2008-01-19 Olga Rozanova

We study doubly nonlinear parabolic equation arising from the gradient flow for p-Sobolev type inequality, referred as p-Sobolev flow from now on, which includes the classical Yamabe flow on a bounded domain in Euclidean space in the…

偏微分方程分析 · 数学 2021-03-30 Tuomo Kuusi , Masashi Misawa , Kenta Nakamura

In this paper, we are concerned with the initial-Neumann boundary value problem of the Schr\"{o}dinger flow for maps from a smooth bounded domain in an Euclidean space into $\mathbb{S}^2$. By adopting a novel method due to B. Chen and Y.D.…

偏微分方程分析 · 数学 2026-04-10 Bo Chen , Guangwu Wang , Youde Wang

We study the long-time behavior of global strong solutions to a hydrodynamic system for nonhomogeneous incompressible nematic liquid crystal flows driven by two types of external forces in a smooth bounded domain in $\mathbb{R}^2$. For…

偏微分方程分析 · 数学 2013-06-27 Xianpeng Hu , Hao Wu

For a class of external forces, we prove the existence and uniqueness of smooth transonic flows to the one dimensional steady Euler system with an external force, which is subsonic at the inlet and flows out at supersonic speed after…

偏微分方程分析 · 数学 2024-03-26 Shangkun Weng , Yan Zhou

Steady incompressible potential flows of an inviscid or viscous fluid are considered in infinite N-dimensional cylinders with tangential boundary conditions. We show that such flows, if away from stagnation, are constant and parallel to the…

偏微分方程分析 · 数学 2025-02-25 François Hamel , Aram Karakhanyan

We identify and discuss a family of azimuthally symmetric, incompressible, magnetohydrodynamic plasma equilibria with poloidal and toroidal flows in terms of solutions of the Generalized Grad Shafranov (GGS) equation. These solutions are…

等离子体物理 · 物理学 2015-06-23 G. Cicogna , F. Pegoraro

The fundamental "two-fluid" model for describing plasma dynamics is given by the Euler-Maxwell system, in which compressible ion and electron fluids interact with their own self-consistent electromagnetic field. We prove global stability of…

偏微分方程分析 · 数学 2013-03-06 Yan Guo , Alexandru D. Ionescu , Benoit Pausader

A basic example of shear flow was introduced by DiPerna and Majda to study the weak limit of oscillatory solutions of the Euler equations of incompressible ideal fluids. In particular, they proved by means of this example that weak limit of…

偏微分方程分析 · 数学 2009-10-13 Claude Bardos , Edriss S. Titi

Exact solutions of a classical problem of a plane unsteady potential flow of an ideal incompressible fluid with a free boundary are presented. The fluid occupies a semi-infinite strip bounded by the free surface (from above) and (from the…

流体动力学 · 物理学 2021-08-13 Evgenii A. Karabut , Elena N. Zhuravleva , Nikolay M. Zubarev , Olga V. Zubareva

The 3D incompressible Euler equations in a bounded domain are most often supplemented with impermeable boundary conditions, which constrain the fluid to neither enter nor leave the domain. We establish well-posedness with inflow, outflow of…

偏微分方程分析 · 数学 2024-12-19 Gung-Min Gie , James P. Kelliher , Anna L. Mazzucato

Non-stationary Euler flows of gases are studied. The system of differential equations describing such flows can be represented by means of 2-forms on zero-jet space and we get some exact solutions by means of such a representation.…

数学物理 · 物理学 2020-04-13 Valentin Lychagin , Mikhail Roop

To date it has not been possible to prove whether or not the three-dimensional incompressible Euler equations develop singular behaviour in finite time. Some possible singular scenarios, as for instance shock-waves, are very important from…

流体动力学 · 物理学 2009-11-11 Carlos Escudero