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An asymptotic preserving and energy stable scheme for the barotropic Euler system under the low Mach number scaling is designed and analysed. A velocity shift proportional to the pressure gradient is introduced in the convective fluxes,…

数值分析 · 数学 2023-07-21 K. R. Arun , Rahuldev Ghorai , Mainak Kar

In this three-part monograph, we prove that steady, incompressible Navier-Stokes flows posed over the moving boundary, $y = 0$, can be decomposed into Euler and Prandtl flows in the inviscid limit globally in $[1,\infty) \times [0,\infty)$,…

偏微分方程分析 · 数学 2016-09-20 Sameer Iyer

In this paper, we study the global existence and low Mach number limit of strong solutions to the 2-D full compressible Navier-Stokes equations around the plane Couette flow in a horizontally periodic layer with non-slip and isothermal…

偏微分方程分析 · 数学 2023-12-19 Tuowei Chen , Qiangchang Ju

In this paper, we are concerned with the global existence and stability of a smooth supersonic flow with vacuum state at infinity in a 3-D infinitely long divergent nozzle. The flow is described by a 3-D steady potential equation, which is…

偏微分方程分析 · 数学 2015-10-28 Xu Gang , Yin Huicheng

We consider the compressible Euler equation with a Coriolis term and prove a lower bound on the time of existence of solutions in terms of the speed of rotation, sound speed and size of the initial data. Along the way, we obtain precise…

偏微分方程分析 · 数学 2026-04-13 Haram Ko , Benoit Pausader , Ryo Takada , Klaus Widmayer

The existence and uniqueness of two dimensional steady compressible Euler flows past a wall or a symmetric body are established. More precisely, given positive convex horizontal veloicty in the upstream, there exists a critical value…

偏微分方程分析 · 数学 2014-10-09 Chao Chen , Lili Du , Chunjing Xie , Zhouping Xin

In this paper, we study the stability of supersonic contact discontinuity for the two-dimensional steady compressible Euler flows in a finitely long nozzle of varying cross-sections. We formulate the problem as an initial-boundary value…

偏微分方程分析 · 数学 2018-04-16 Feimin Huang , Jie Kuang , Dehua Wang , Wei Xiang

Finite volume schemes often have difficulties to resolve the low Mach number (incompressible) limit of the Euler equations. Incompressibility is only non-trivial in multiple spatial dimensions. Low Mach fixes, however generally are applied…

数值分析 · 数学 2021-04-07 Wasilij Barsukow

A new type of systematic approach to study the incompressible Euler equations numerically via the vanishing viscosity limit is proposed in this work. We show the new strategy is unconditionally stable that the $L^2$-energy dissipates and…

数值分析 · 数学 2024-06-19 Xinyu Cheng , Zhaonan Luo , Sheng Wang

The low Mach number limit for one-dimensional non-isentropic compressible Navier-Stokes system without viscosity is investigated, where the density and temperature have different asymptotic states at far fields. It is proved that the…

偏微分方程分析 · 数学 2017-05-23 Yechi Liu

We study the asymptotic behavior of solutions of the two dimensional incompressible Euler equations in the exterior of a curve when the curve shrinks to a point. This work links two previous results: [Iftimie, Lopes Filho and Nussenzveig…

偏微分方程分析 · 数学 2011-02-07 Christophe Lacave

Building on the recent work of C. De Lellis and L. Sz\'{e}kelyhidi, we construct global weak solutions to the three-dimensional incompressible Euler equations which are zero outside of a finite time interval and have velocity in the…

偏微分方程分析 · 数学 2014-02-17 Philip Isett

This paper concerns smooth supersonic flows with Lipschitz continuous speed in two-dimensional infinite expanding nozzles, which are governed by a quasilinear hyperbolic equation being singular at the sonic and vacuum state. The flow…

偏微分方程分析 · 数学 2014-10-16 Chunpeng Wang , Zhouping Xin

We investigate inviscid instability in an electrically conducting fluid affected by a parallel magnetic field. The case of low magnetic Reynolds number in Poiseuille flow is considered. When the magnetic field is sufficiently strong, for a…

流体动力学 · 物理学 2013-07-22 A. V. Monwanou , J. B. Chabi Orou

We give a survey of recent results on weak-strong uniqueness for compressible and incompressible Euler and Navier-Stokes equations, and also make some new observations. The importance of the weak-strong uniqueness principle stems, on the…

偏微分方程分析 · 数学 2017-05-12 Emil Wiedemann

Smooth solutions of the forced incompressible Euler equations satisfy an energy balance, where the rate-of-change in time of the kinetic energy equals the work done by the force per unit time. Interesting phenomena such as turbulence are…

偏微分方程分析 · 数学 2024-04-22 Fabian Jin , Samuel Lanthaler , Milton C. Lopes Filho , Helena J. Nussenzveig Lopes

In this paper, when the magnitude of the Mach number is strictly between some fixed small enough constant and $\sqrt{2}$, we can prove the linear and nonlinear ill-posedness of the Kelvin-Helmholtz problem for compressible ideal fluids. To…

偏微分方程分析 · 数学 2024-07-03 Binqiang Xie , Bin Zhao

We study the limiting behavior of the solutions of Euler equations of one-dimensional compressible fluid flow as the pressure like term vanishes. This system can be thought of as an approximation for the one dimensional model for large…

偏微分方程分析 · 数学 2018-03-06 Manas Ranjan Sahoo , Abhrojyoti Sen

We study the vanishing Mach number limit for the stochastic Navier-Stokes equations with $\gamma$-type pressure laws, with focus on the one-dimensional case. We prove that, if the stochastic term vanishes with respect to the Mach number…

概率论 · 数学 2023-11-27 Gui-Qiang G. Chen , Michele Coti Zelati , Chin Ching Yeung

We show that for any $\al<\frac 17$ there exist $\al$-H\"older continuous weak solutions of the three-dimensional incompressible Euler equation, which satisfy the local energy inequality and strictly dissipate the total kinetic energy. The…

偏微分方程分析 · 数学 2023-02-15 Camillo De Lellis , Hyunju Kwon