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We establish existence, uniqueness and stability of transonic shocks for steady compressible non-isentropic potential flow system in a multidimensional divergent nozzle with an arbitrary smooth cross-section, for a prescribed exit pressure.…

偏微分方程分析 · 数学 2015-05-18 Myoungjean Bae , Mikhail Feldman

This paper concerns the existence of transonic shock solutions to the 2-D steady compressible Euler system in an almost flat finite nozzle ( in the sense that it is a generic small perturbation of a flat one ), under physical boundary…

偏微分方程分析 · 数学 2019-08-08 Beixiang Fang , Zhouping Xin

We consider the Riemann problem composed of two shocks for the 1D Euler system. We show that the Riemann solution with two shocks is stable and unique in the class of weak inviscid limits of solutions to the Navier-Stokes equations with…

偏微分方程分析 · 数学 2020-11-12 Moon-Jin Kang , Alexis Vasseur

We consider the Cauchy problems of a non-strictly hyperbolic system which describes the compressible Euler fluid with exothermic reaction. In this paper a Lyapunov-type functional is constructed for balance laws. By analysis of the flow…

动力系统 · 数学 2018-01-30 Kai Hu

A recent prominent result asserts that steady incompressible Euler flows strictly away from stagnation in a two-dimensional infinitely long strip must be shear flows. On the other hand, flows with stagnation points, very challenging in…

偏微分方程分析 · 数学 2023-12-12 Congming Li , Yingshu Lv , Henrik Shahgholian , Chunjing Xie

We are concerned with free boundary problems arising from the analysis of multidimensional transonic shock waves for the Euler equations in compressible fluid dynamics. In this expository paper, we survey some recent developments in the…

偏微分方程分析 · 数学 2022-03-29 Gui-Qiang G. Chen , Mikhail Feldman

The existence of a solution to the two dimensional incompressible Euler equations in singular domains was established in [G\'erard-Varet and Lacave, The 2D Euler equation on singular domains, submitted]. The present work is about the…

偏微分方程分析 · 数学 2013-10-22 Christophe Lacave

We study the 2D Euler equation in a bounded simply-connected domain, and establish the local uniqueness of flow whose stream function $\psi_\varepsilon$ satisfies \begin{equation*} \begin{cases} -\varepsilon^2\Delta…

偏微分方程分析 · 数学 2022-06-08 Daomin Cao , Weilin Yu , Changjun Zou

We study the uniqueness of solutions with a transonic shock in a two-dimensional Riemannian manifold with a special metric, which can be regarded as an approximate model of the general physical nozzles, within a class of transonic shock…

偏微分方程分析 · 数学 2025-09-01 Minghong Han , Bingsong Long , Hairong Yuan

Linear stability of supersonic flow over a short compression corner with ramp angles 30 and 42 is investigated using Direct Simulation Monte Carlo (DSMC) and Linear Stability Theory (LST) at Mach number 3, Reynolds number 11,200 and low…

流体动力学 · 物理学 2024-05-14 Irmak T. Karpuzcu , Vassilis Theofilis , Deborah A. Levin

This paper studies the classical water wave problem with vorticity described by the Euler equations with a free surface under the influence of gravity over a flat bottom. Based on fundamental work \cite{ConstantinStrauss}, we first obtain…

偏微分方程分析 · 数学 2022-07-12 Guowei Dai , Yong Zhang

The characteristic structure of the two-dimensional adjoint Euler equations is examined. The behavior is similar to that of the original Euler equations, but with the information travelling in the opposite direction. The compatibility…

流体动力学 · 物理学 2025-06-03 Carlos Lozano , Jorge Ponsin

In this paper, we are concerned with the existence of transonic shock solutions for two-dimensional (2-d) steady Euler flows of polytropic gases with the vertical gravity in a horizontal nozzle under a pressure condition imposed at the exit…

偏微分方程分析 · 数学 2025-04-08 Beixiang Fang , Xin Gao , Wei Xiang , Qin Zhao

In this article, we are interested in the strong well-posedness together with the numerical approximation of some one-dimensional stochastic differential equations with a non-linear drift, in the sense of McKean-Vlasov, driven by a…

概率论 · 数学 2020-01-22 Noufel Frikha , Libo Li

Supersonic flows for the two-dimensional (2D) steady full Euler system are studied. We construct a global non-isentropic rotational supersonic flow in a semi-infinite divergent duct. The flow satisfies the slip condition on the walls of the…

偏微分方程分析 · 数学 2020-03-24 Geng Lai

We are concerned with supersonic vortex sheets for the Euler equations of compressible inviscid fluids in two space dimensions. For the problem with constant coefficients, in [10] the authors have derived a pseudo-differential equation…

偏微分方程分析 · 数学 2020-08-14 Paolo Secchi

Consider a $1$D simple small-amplitude solution $(\rho_{(bkg)}, v^1_{(bkg)})$ to the isentropic compressible Euler equations which has smooth initial data, coincides with a constant state outside a compact set, and forms a shock in finite…

偏微分方程分析 · 数学 2024-05-01 Jonathan Luk , Jared Speck

We consider a two-dimensional, two-layer, incompressible, steady flow, with vorticity which is constant in each layer, in an infinite channel with rigid walls. The velocity is continuous across the interface, there is no surface tension or…

偏微分方程分析 · 数学 2023-10-18 Karsten Matthies , Jonathan Sewell , Miles H. Wheeler

The linear stability with variable coefficients of the vortex sheets for the two-dimensional compressible elastic flows is studied. As in our earlier work on the linear stability with constant coefficients, the problem has a free boundary…

偏微分方程分析 · 数学 2018-12-20 Robin Ming Chen , Jilong Hu , Dehua Wang

We study the motion of charged liquid drop in three dimensions where the equations of motions are given by the Euler equations with free boundary with an electric field. This is a well-known problem in physics going back to the famous work…

偏微分方程分析 · 数学 2024-03-07 Vesa Julin , Domenico Angelo La Manna