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We are concerned with global steady subsonic flows through general infinitely long nozzles for the full Euler equations. The problem is formulated as a boundary value problem in the unbounded domain for a nonlinear elliptic equation of…

偏微分方程分析 · 数学 2012-04-10 Gui-Qiang Chen , Xuemei Deng , Wei Xiang

We consider global-in-time evolution of irrotational, isentropic, compressible Euler flow in $3$-D, for a broad class of $H^4$ classical Cauchy data without assuming symmetry, prescribed on an annulus surrounded by a constant state in the…

偏微分方程分析 · 数学 2025-01-03 Qian Wang

We show that H\"{o}lder continuous incompressible Euler flows that satisfy the local energy inequality ("globally dissipative" solutions) exhibit nonuniqueness and contain examples that strictly dissipate kinetic energy. The collection of…

偏微分方程分析 · 数学 2022-02-08 Philip Isett

We consider the initial boundary value problem for a model system of one-dimensional equations which describe unsteady polytropic motions of a mixture of viscous compressible fluids. We prove the global existence and uniqueness theorem for…

偏微分方程分析 · 数学 2017-11-22 Dmitriy Prokudin

The global solutions in critical spaces to the multi-dimensional compressible viscoelastic flows are considered. The global existence of the Cauchy problem with initial data close to an equilibrium state is established in Besov spaces.…

偏微分方程分析 · 数学 2010-10-22 Xianpeng Hu , Dehua Wang

In this paper we are concerned with the global existence of smooth solutions to the turbulent flow equations for compressible flows in $\mathbb{R}^3$. The global well-posedness is proved under the condition that the initial data are close…

偏微分方程分析 · 数学 2012-04-10 Dongfen Bian , Boling Guo

We are concerned with spherically symmetric solutions to the Euler equations for the multi-dimensional compressible fluids, which have many applications in diverse real physical situations. The system can be reduced to one dimensional…

偏微分方程分析 · 数学 2019-08-20 Feimin Huang , Tianhong Li , Difan Yuan

In this paper, we prove the existence and uniqueness of subsonic solutions to the steady Euler flows past a smooth, axisymmetric obstacle. Specifically, for a broad class of prescribed positive axial velocities in the upstream, the subsonic…

偏微分方程分析 · 数学 2026-02-27 Dehua Wang , Tian-Yi Wang , Weiqiang Wang

For the three-dimensional vacuum free boundary problem with physical singularity that the sound speed is $C^{ {1}/{2}}$-H$\ddot{\rm o}$lder continuous across the vacuum boundary of the compressible Euler equations with damping, without any…

偏微分方程分析 · 数学 2020-10-28 Huihui Zeng

Global stability of the spherically symmetric nonisentropic compressible Euler equations with positive density around global-in-time background affine solutions is shown in the presence of free vacuum boundaries. Vacuum is achieved despite…

偏微分方程分析 · 数学 2021-06-03 Calum Rickard

We consider the Cauchy problem for the barotropic Euler system coupled to Helmholtz or Poisson equations, in the whole space. We assume that the initial density is small enough, and that the initial velocity is close to some reference…

偏微分方程分析 · 数学 2019-06-20 Šárka Nečasová , Xavier Blanc , Raphaël Danchin , Bernard Ducomet , andš Nečasová

We consider the free-boundary relativistic Euler equations in Minkowski spacetime $\mathbb{M}^{1+3}$ equipped with a physical vacuum boundary, which models the motion of a relativistic gas. We concern ourselves with the family of…

偏微分方程分析 · 数学 2026-01-22 Marcelo M. Disconzi , Zhongtian Hu , Chenyun Luo

We obtain the global large solutions to the compressible Navier-Stokes equations in $\mathbb{R}^2$. The solution is large in the sense that there is no smallness assumption applied to one component of the initial incompressible velocity.

偏微分方程分析 · 数学 2019-10-25 Xiaoping Zhai , Zhi-Min Chen

We consider solutions of the 2-d compressible Euler equations that are steady and self-similar. They arise naturally at interaction points in genuinely multi-dimensional flow. We characterize the possible solutions in the class of flows…

偏微分方程分析 · 数学 2012-11-14 Volker Elling , Joseph Roberts

In dimension $n=2$ and $3$, we show that for any initial datum belonging to a dense subset of the energy space, there exist infinitely many global-in-time admissible weak solutions to the isentropic Euler system whenever $1<\gamma\leq…

偏微分方程分析 · 数学 2021-03-09 Robin Ming Chen , Alexis F. Vasseur , Cheng Yu

Global existence for the nonisentropic compressible Euler equations with vacuum boundary for all adiabatic constants $\gamma > 1$ is shown through perturbations around a rich class of background nonisentropic affine motions. The notable…

偏微分方程分析 · 数学 2021-06-03 Calum Rickard , Mahir Hadzic , Juhi Jang

We study the global existence and uniqueness of classical solutions to the three-dimensional compressible isentropic Navier-Stokes equations with vacuum and external potential forces which could be arbitrarily large provided the initial…

偏微分方程分析 · 数学 2011-11-10 Jing Li , Jianwen Zhang , Junning Zhao

In this paper, we study the global existence of steady subsonic Euler flows through infinitely long nozzles without the assumption of irrotationality. It is shown that when the variation of Bernoulli's function in the upstream is…

偏微分方程分析 · 数学 2009-07-21 Chunjing Xie , Zhouping Xin

We discuss several approaches to generalized solutions of problems describing the motion of inviscid fluids. We propose a new concept of dissipative solution to the compressible Euler system based on a careful analysis of possible…

偏微分方程分析 · 数学 2019-07-04 Dominic Breit , Eduard Feireisl , Martina Hofmanova

In this paper, we consider incompressible Euler flows in $ \mathbb{R}^{4} $ under bi-rotational symmetry, namely solutions that are invariant under rotations in $\mathbb{R}^{4}$ fixing either the first two or last two axes. With the…

偏微分方程分析 · 数学 2024-02-29 Kyudong Choi , In-Jee Jeong , Deokwoo Lim