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相关论文: Low Mach Number Limit of Steady Euler Flows in Mul…

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In this paper, we study the global subsonic irrotational flows in a multi-dimensional ($n\geq 2$) infinitely long nozzle with variable cross sections. The flow is described by the inviscid potential equation, which is a second order…

偏微分方程分析 · 数学 2015-05-27 Lili Du , Zhouping Xin , Wei Yan

We investigate the hypersonic limit for steady, uniform, and compressible polytropic gas passing a symmetric straight cone. By considering Radon measure solutions, we show that as the Mach number of the upstream flow tends to infinity, the…

偏微分方程分析 · 数学 2024-04-17 Qianfeng Li , Aifang Qu , Xueying Su , Hairong Yuan

We consider the compressible Navier-Stokes system describing the motion of a viscous fluid confined to a straight layer $\Omega_{\delta}=(0,\delta)\times\mathbb{R}^2$. We show that the weak solutions in the 3D domain converge strongly to…

偏微分方程分析 · 数学 2020-01-29 Matteo Caggio , Donatella Donatelli , Sarka Necasova , Yongzhong Sun

In this article, we verify the low Mach number limit of strong solutions to the non-isentropic compressible magnetohydrodynamic equations with zero magnetic diffusivity and ill-prepared initial data in three-dimensional bounded domains,…

偏微分方程分析 · 数学 2023-08-16 Yaobin Ou , Lu Yang

We investigate the existence and the zero viscosity limit of steady compressible shear flow with Navier-slip boundary condition in the absence of any external force in a two-dimension domain $\Omega=(0,L)\times(0,2)$. More precisely, under…

偏微分方程分析 · 数学 2024-06-10 Wenbin Li , Chunhui Zhou

We propose two novel two-state approximate Riemann solvers for the compressible Euler equations which are provably entropy dissipative and suitable for the simulation of low Mach numbers. What is new, is that one of our two methods in…

数值分析 · 数学 2020-04-06 Jonas P. Berberich , Christian Klingenberg

We are interested in the stability analysis of two-dimensional incompressible inviscid fluids. Specifically, we revisit a recent result on the stability of Yudovich's solutions to the incompressible Euler equations in $L^\infty([0,T];H^1)$…

偏微分方程分析 · 数学 2023-12-25 Diogo Arsénio , Haroune Houamed

In this paper, we study the two-dimensional steady compactly supported incompressible Euler equations with free boundaries. We consider flows with constant vorticity that are perturbations of annular equilibria, in contrast to the laminar…

偏微分方程分析 · 数学 2026-04-14 Changfeng Gui , Jun Wang , Wen Yang , Yong Zhang

In this paper, a compensated compactness framework is established for sonic-subsonic approximate solutions to the $n$-dimensional$(n\geq 2)$ Euler equations for steady irrotational flow that may contain stagnation points. This compactness…

偏微分方程分析 · 数学 2015-03-19 Feimin Huang , Tianyi Wang , Yong Wang

In this paper, we study the stability two-dimensional (2D) steady Euler flows with sharply concentrated vorticity in a simply-connected bounded domain. These flows are obtained as maximizers of the kinetic energy subject to the constraint…

偏微分方程分析 · 数学 2023-05-16 Guodong Wang

In this paper, we study two-dimensional steady incompressible Euler flows in which the vorticity is sharply concentrated in a finite number of regions of small diameter in a bounded domain. Mathematical analysis of such flows is an…

偏微分方程分析 · 数学 2021-02-08 Guodong Wang , Bijun Zuo

We study singular limit for scaled barotropic Euler system modelling a rotating, compressible and inviscid fluid, where Mach and Rossby numbers are proportional to a small parameter $\epsilon$. If the fluid is confined to an infinite slab,…

偏微分方程分析 · 数学 2019-07-17 Nilasis Chaudhuri

This paper is concerned with the incompressible limit of the compressible hydrodynamic flow of liquid crystals with periodic boundary conditions in R^N(N = 2, 3). It is rigorously shown that the local (and global) strong solution of the…

偏微分方程分析 · 数学 2014-05-06 Shijin Ding , Jinrui Huang , Huanyao Wen , Ruizhao Zi

We give an existence and asymptotic result for the so-called finite energy weak martingale solution of the compressible isentropic Navier--Stokes system driven by some random force in the whole spatial region. In particular, given a general…

偏微分方程分析 · 数学 2017-05-04 Prince Romeo Mensah

We establish the optimal convergence rate to the hypersonic similarity law, which is also called the Mach number independence principle, for steady compressible full Euler flows over two-dimensional slender Lipschitz wedges. The problem can…

偏微分方程分析 · 数学 2024-07-01 Gui-Qiang G. Chen , Jie Kuang , Wei Xiang , Yongqian Zhang

This paper is devoted to the study of the low Mach number limit for the isentropic Euler system with axisymmetric initial data without swirl. In the first part of the paper we analyze the problem corresponding to the subcritical…

偏微分方程分析 · 数学 2011-09-30 Taoufik Hmidi

The unsteady response of nozzles with steady heat transfer forced by acoustic and/or entropy waves is modelled. The approach is based on the quasi-one-dimensional linearised Euler equations. The equations are cast in terms of three…

流体动力学 · 物理学 2022-03-02 Saikumar R. Yeddula , Juan Guzmán-Iñigo , Aimee S. Morgans

The low Mach number limit for the multi-dimensional full magnetohydrodynamic equations, in which the effect of thermal conduction is taken into account, is rigorously justified in the framework of classical solutions with small density and…

偏微分方程分析 · 数学 2015-05-28 Song Jiang , Qiangchang Ju , Fucai Li

We establish uniform regularity estimates with respect to the Mach number for the three-dimensional free surface compressible Navier-Stokes system in the case of slightly well-prepared initial data in the sense that the acoustic components…

偏微分方程分析 · 数学 2021-10-18 Nader Masmoudi , Frédéric Rousset , Changzhen Sun

In this article we consider viscous flow in the exterior of an obstacle satisfying the standard no-slip boundary condition at the surface of the obstacle. We seek conditions under which solutions of the Navier-Stokes system in the exterior…

偏微分方程分析 · 数学 2009-02-17 D. Iftimie , M. C. Lopes Filho , H. J. Nussenzveig Lopes