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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…

Analysis of PDEs · Mathematics 2018-12-20 Robin Ming Chen , Jilong Hu , Dehua Wang

The linear stability of rectilinear compressible vortex sheets is studied for two-dimensional isentropic elastic flows. This problem has a free boundary and the boundary is characteristic. A necessary and sufficient condition is obtained…

Analysis of PDEs · Mathematics 2015-09-10 Robin Ming Chen , Jilong Hu , Dehua Wang

We are concerned with the nonlinear stability of vortex sheets for the relativistic Euler equations in three-dimensional Minkowski spacetime. This is a nonlinear hyperbolic problem with a characteristic free boundary. In this paper, we…

Analysis of PDEs · Mathematics 2020-09-24 Gui-Qiang Chen , Paolo Secchi , Tao Wang

Compressible vortex sheets are fundamental waves in entropy solutions to the multidimensional hyperbolic systems of conservation laws. For the Euler equations in 2-D gas dynamics, the classical linearized stability analysis on compressible…

Analysis of PDEs · Mathematics 2007-05-23 Gui-Qiang Chen , Ya-Guang Wang

We show the short-time existence and nonlinear stability of vortex sheets for the nonisentropic compressible Euler equations in two spatial dimensions, based on the weakly linear stability result of Morando--Trebeschi (2008) [20]. The…

Analysis of PDEs · Mathematics 2020-09-24 Alessandro Morando , Paola Trebeschi , Tao Wang

We are concerned with the vortex sheet solutions for the inviscid two-phase flow in two dimensions. In particular, the nonlinear stability and existence of compressible vortex sheet solutions under small perturbations are established by…

Analysis of PDEs · Mathematics 2020-01-03 Feimin Huang , Dehua Wang , Difan Yuan

This paper concerns the stabilizing effect of viscosity on the vortex sheets. It is found that although a vortex sheet is not a time-asymptotic attractor for the compressible Navier-Stokes equations, a viscous wave that approximates the…

Analysis of PDEs · Mathematics 2023-09-12 Feimin Huang , Zhouping Xin , Lingda Xu , Qian Yuan

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…

Analysis of PDEs · Mathematics 2020-08-14 Paolo Secchi

We are concerned with nonlinear stability and existence of two-dimensional current-vortex sheets in ideal compressible magnetohydrodynamics. This is a nonlinear hyperbolic initial-boundary value problem with characteristic free boundary. It…

Analysis of PDEs · Mathematics 2023-05-24 Alessandro Morando , Paolo Secchi , Paola Trebeschi , Difan Yuan

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 we derive an evolution equation for the discontinuity front of the…

Analysis of PDEs · Mathematics 2018-06-19 Alessandro Morando , Paolo Secchi , Paola Trebeschi

In this paper, we are concerned with the uniqueness and nonlinear stability of vortex rings for the 3D Euler equation. By utilizing Arnold 's variational principle for steady states of Euler equations and concentrated compactness method…

Analysis of PDEs · Mathematics 2026-02-10 Daomin Cao , Shanfa Lai , Guolin Qin , Weicheng Zhan , Changjun Zou

In this paper, we investigate linear stability properties of the 2D isentropic compressible Euler equations linearized around a shear flow given by a monotone profile, close to the Couette flow, with constant density, in the domain…

Analysis of PDEs · Mathematics 2020-03-04 Paolo Antonelli , Michele Dolce , Pierangelo Marcati

This note is devoted to the linear stability of the Couette flow for the non-isentropic compressible Euler equations in a domain $\mathbb{T}\times \mathbb{R}$. Exploiting the several conservation laws originated from the special structure…

Analysis of PDEs · Mathematics 2021-05-18 Xiaoping Zhai

We study the well-posedness of compressible vortex sheets and entropy waves in two-dimensional steady supersonic Euler flows over Lipschitz walls with $BV$ incoming flows. Both the Lipschitz wall of $BV$ tangential angle function and the…

Analysis of PDEs · Mathematics 2022-04-27 Gui-Qiang G. Chen , Vaibhav Kukreja

We study the stability of the vortex in a 2D model of continuous compressible media in a uniformly rotating reference frame. As it is known, the axisymmetric vortex in a fixed reference frame is stable with respect to asymmetric…

Mathematical Physics · Physics 2015-11-24 Olga S. Rozanova , Jui-Ling Yu , Marko K. Turzynsky , Chin-Kun Hu

This paper studies the stability and large-time behavior of the three-dimensional (3-D) Boltzmann equation near shock profiles. We prove the nonlinear stability of the composite wave consisting of two shock profiles under general…

Analysis of PDEs · Mathematics 2024-02-08 Dingqun Deng , Lingda Xu

We consider the rotating and translating equilibria of open finite vortex sheets with endpoints in two-dimensional potential flows. New results are obtained concerning the stability of these equilibrium configurations which complement…

Fluid Dynamics · Physics 2023-06-22 Bartosz Protas , Stefan G. Llewellyn Smith , Takashi Sakajo

We establish the nonlinear stability threshold $O(\nu^{3/2})$ for the three-dimensional Couette flow governed by the compressible Navier--Stokes equations. While stability thresholds are well understood in two dimensions for both…

Analysis of PDEs · Mathematics 2026-05-11 Rui Li , Fei Wang , Lingda Xu , Zeren Zhang

In the high-Reynolds-number regime, this work investigates the long-time dynamics of the three-dimensional incompressible Navier-Stokes equations near the Oseen vortex filament. The flow exhibits a strong interplay between vortex…

Analysis of PDEs · Mathematics 2025-12-18 Te Li , Ping Zhang , Yibin Zhang

We construct infinitely many admissible weak solutions to the 2D incompressible Euler equations for vortex sheet initial data. Our initial datum has vorticity concentrated on a simple closed curve in a suitable H\"older space and the…

Analysis of PDEs · Mathematics 2020-05-19 Francisco Mengual , László Székelyhidi
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