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In this paper, we study irrotational subsonic and subsonic-sonic flows with general conservative forces in the exterior domains. The conservative forces indicate the new Bernoulli law naturally. For the subsonic case, we introduce a…

偏微分方程分析 · 数学 2020-01-28 Xumin Gu , Tian-Ti Wang

This paper concerns the structural stability of smooth cylindrically symmetric supersonic spiral flows with large angular velocity for the steady Euler-Poisson system in a concentric cylinder. We establish the existence and uniqueness of…

偏微分方程分析 · 数学 2025-06-06 Chunpeng Wang , Zihao Zhang

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, the well-posedness and optimal convergence rates of subsonic irrotational flows through a three dimensional infinitely long nozzle with a smooth obstacle inside are established. More precisely, the global existence and…

偏微分方程分析 · 数学 2020-08-26 Lei Ma , Chunjing Xie

We investigate two dimensional steady Euler-Poisson system which describe the motion of compressible self-gravitating flows. The unique existence and stability of subsonic flows in a duct of finite length are obtained when prescribing the…

偏微分方程分析 · 数学 2014-06-18 Myoungjean Bae , Ben Duan , Chunjing Xie

We analyze stationary accretion of selfgravitating gas onto a compact center within general-relativistic radiation hydrodynamics. Spherical symmetry and thin gas approximation are assumed. Numerical investigation shows that transonic flows…

天体物理学 · 物理学 2009-01-27 Edward Malec , Janusz Karkowski , Krzysztof Roszkowski , Zdobyslaw Swierczynski

In this paper, we prove the existence and stability of subsonic flows for steady full Euler-Poisson system in a two dimensional nozzle of finite length when imposing the electric potential difference on non-insulated boundary from a fixed…

偏微分方程分析 · 数学 2013-09-16 Myoungjean Bae , Ben Duan , Chunjing Xie

In this paper, we consider the well-posedness theory of two-dimensional compressible subsonic jet flows for steady full Euler system with general vorticity. Inspired by the analysis in arXiv:2006.05672, we show that the stream function…

偏微分方程分析 · 数学 2024-04-26 Yan Li

This paper concerns the well-posedness of subsonic flows in a three-dimensional finitely long cylinder with arbitrary cross section. We establish the existence and uniqueness of subsonic flows in the Sobolev space by prescribing the normal…

偏微分方程分析 · 数学 2024-01-17 Shangkun Weng , Changkui Yao

In this paper, we establish existence of global subsonic and subsonic-sonic flows through infinitely long axially symmetric nozzles by combining variational method, various elliptic estimates and a compensated compactness method. More…

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

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

We establish unique existence and stability of subsonic potential flow for steady Euler-Poisson system in a multidimensional nozzle of a finite length when prescribing the electric potential difference on non-insulated boundary from a fixed…

偏微分方程分析 · 数学 2013-06-04 Myoungjean Bae , Ben Duan , Chunjing Xie

A compactness framework is established for approximate solutions to subsonic-sonic flows governed by the steady full Euler equations for compressible fluids in arbitrary dimension. The existing compactness frameworks for the two-dimensional…

偏微分方程分析 · 数学 2015-07-28 Gui-Qiang G. Chen , Fei-Min Huang , Tian-Yi Wang

We established the existence, uniqueness and stability of subsonic flows past an airfoil with a vortex line at the trailing edge. Such a flow pattern is governed by the two dimensional steady compressible Euler equations. The vortex line…

偏微分方程分析 · 数学 2020-08-18 Jun Chen , Zhouping Xin , Aibin Zang

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

This paper concerns compressible subsonic jet flows for a given surrounding pressure from a two-dimensional finitely long convergent nozzle with straight solid wall, which are governed by a free boundary problem for a quasilinear elliptic…

偏微分方程分析 · 数学 2019-02-08 Chunpeng Wang , Zhouping Xin

In this paper, we establish the existence and uniqueness of subsonic flows with a contact discontinuity in a two-dimensional finitely long slightly curved nozzle by prescribing the entropy, the Bernoulli's quantity and the horizontal mass…

偏微分方程分析 · 数学 2024-04-08 Shangkun Weng , Zihao Zhang

This paper concerns the structural stability of subsonic flows with a contact discontinuity in a finitely long axisymmetric cylinder. We establish the existence and uniqueness of axisymmetric subsonic flows with a contact discontinuity by…

偏微分方程分析 · 数学 2023-08-08 Shangkun Weng , Zihao Zhang

We investigate the steady inviscid compressible self-similar flows which depends only on the polar angle in spherical coordinates. It is shown that besides the purely supersonic and subsonic self-similar flows, there exists purely sonic…

偏微分方程分析 · 数学 2025-01-20 Shangkun Weng , Hongwei 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
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