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In this paper, we establish a priori estimates for the three-dimensional compressible Euler equations with moving physical vacuum boundary, the $\gamma$-gas law equation of state for $\gamma=2$ and the general initial density $\ri \in H^5$.…

偏微分方程分析 · 数学 2013-06-21 Chengchun Hao

We study the relativistic Euler equations on the Minkowski spacetime background. We make assumptions on the equation of state and the initial data that are relativistic analogs of the well-known physical vacuum boundary condition, which has…

偏微分方程分析 · 数学 2015-11-25 Mahir Hadzic , Steve Shkoller , Jared Speck

We prove well-posedness for the 3-D compressible Euler equations with moving physical vacuum boundary, with an equation of state given by the so-called gamma gas-law for gamma > 1. The physical vacuum singularity requires the sound speed c…

偏微分方程分析 · 数学 2010-05-17 Daniel Coutand , Steve Shkoller

An important problem in gas and fluid dynamics is to understand the behavior of vacuum states, namely the behavior of the system in the presence of vacuum. In particular, physical vacuum, in which the boundary moves with a nontrivial finite…

偏微分方程分析 · 数学 2010-05-26 Juhi Jang , Nader Masmoudi

We derive a priori estimates for the compressible free-boundary Euler equations with surface tension in three spatial dimensions in the case of a liquid. These are estimates for local existence in Lagrangian coordinates when the initial…

偏微分方程分析 · 数学 2019-10-01 Marcelo M. Disconzi , Igor Kukavica

The free-boundary compressible 1-D Euler equations with moving physical vacuum boundary are a system of hyperbolic conservation laws which are both characteristic and degenerate. The physical vacuum singularity (or rate-of-degeneracy)…

偏微分方程分析 · 数学 2009-10-19 Daniel Coutand , Steve Shkoller

We consider the local well-posedness of the one-dimensional nonisentropic Euler equations with moving physical vacuum boundary condition. The physical vacuum singularity requires the sound speed to be scaled as the square root of the…

偏微分方程分析 · 数学 2019-05-29 Yongcai Geng , Yachun Li , Dehua Wang , Runzhang Xu

The global existence of smooth solutions to the vacuum free boundary problem with physical singularity of compressible Euler equations with damping and gravity is proved in space dimensions $n=1, 2, 3$, for the initial data being small…

偏微分方程分析 · 数学 2021-10-29 Huihui Zeng

We prove that the 3-D compressible Euler equations with surface tension along the moving free-boundary are well-posed. Specifically, we consider isentropic dynamics and consider an equation of state, modeling a liquid, given by Courant and…

偏微分方程分析 · 数学 2012-08-15 Daniel Coutand , Jason Hole , Steve Shkoller

We derive a priori estimates for the incompressible free-boundary Euler equations with surface tension in three spatial dimensions. Working in Lagrangian coordinates, we provide a priori estimates for the local existence when the initial…

偏微分方程分析 · 数学 2019-11-04 Marcelo M. Disconzi , Igor Kukavica

We prove a priori estimates for the compressible Euler equations modeling the motion of a liquid with moving physical vacuum boundary in an unbounded initial domain. The liquid is under influence of gravity but without surface tension. Our…

偏微分方程分析 · 数学 2018-12-06 Chenyun Luo

This article is concerned with the local well-posedness problem for the compressible Euler equations in gas dynamics. For this system we consider the free boundary problem which corresponds to a physical vacuum. Despite the clear physical…

偏微分方程分析 · 数学 2023-03-28 Mihaela Ifrim , Daniel Tataru

In this paper, we prove a new type of energy estimates for the compressible Euler's equation with free boundary, with a boundary part and an interior part. These can be thought of as a generalization of the energies in Christodoulou and…

偏微分方程分析 · 数学 2017-04-17 Hans Lindblad , Chenyun Luo

This paper is concerned with the three dimensional compressible Euler--Poisson equations with moving physical vacuum boundary condition. This fluid system is usually used to describe the motion of a self-gravitating inviscid gaseous star.…

偏微分方程分析 · 数学 2014-05-20 Xumin Gu , Zhen Lei

In this paper, we will provide a result on the relativistic Euler equations for an ideal gas equation of state and a physical vacuum boundary. More specifically, we will prove a priori estimates for the linearized system in weighted Sobolev…

偏微分方程分析 · 数学 2024-11-22 Brian B. Luczak

This paper concerns the large time asymptotic behavior of solutions to the free boundary problem of the compressible primitive equations in atmospheric dynamics with physical vacuum. Up to second order of the perturbations of an…

偏微分方程分析 · 数学 2025-07-15 Xin Liu , Edriss S. Titi , Zhouping Xin

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

A free boundary problem for the incompressible neo-Hookean elastodynamics is studied in two and three spatial dimensions. The a priori estimates in Sobolev norms of solutions with the physical vacuum condition are established through a…

偏微分方程分析 · 数学 2016-07-12 Chengchun Hao , Dehua Wang

In this paper, vacuum and singularity formation are considered for compressible Euler equations with time-dependent damping. For $1<\gamma\leq 3$, by constructing some new control functions ingeniously, we obtain the lower bounds estimates…

偏微分方程分析 · 数学 2022-01-21 Ying Sui , Weiqiang Wang , Huimin Yu

In the present paper, we prove the a priori estimates of Sobolev norms for a free boundary problem of the incompressible inviscid MHD equations in all physical spatial dimensions $n=2$ and 3 by adopting a geometrical point of view used in…

偏微分方程分析 · 数学 2014-04-23 Chengchun Hao , Tao Luo
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