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We consider the stability of a system of equations which are a singular perturbation of the incompressible rigid-plastic flow equations used to model granular flow. A linear stability analysis shows that solutions of these equations are…

软凝聚态物质 · 物理学 2007-05-23 Shaun Hendy

Extending investigations of Yarahmadian and Zumbrun in the strictly parabolic case, we study time-asymptotic stability of arbitrary (possibly large) amplitude noncharacteristic boundary layers of a class of hyperbolic-parabolic systems…

偏微分方程分析 · 数学 2008-04-09 Toan Nguyen , Kevin Zumbrun

By a combination of asymptotic ODE estimates and numerical Evans function calculations, we establish stability of viscous shock solutions of the isentropic compressible Navier--Stokes equations with $\gamma$-law pressure (i) in the limit as…

偏微分方程分析 · 数学 2017-06-09 Jeffrey Humpherys , Olivier Laffite , Kevin Zumbrun

The system describing the dynamics of a compressible isentropic fluid exhibiting viscosity and internal capillarity in one space dimension and in Lagrangian coordinates, is considered. It is assumed that the viscosity and the capillarity…

偏微分方程分析 · 数学 2026-04-07 R. Folino , C. Lattanzio , R. G. Plaza

Continuing a line of investigation initiated by Texier and Zumbrun on dynamics of viscous shock and detonation waves, we show that a linearly unstable Lax-type viscous shock solution of a semilinear strictly parabolic system of conservation…

偏微分方程分析 · 数学 2008-11-10 Kevin Zumbrun

Linear stability of a plane shock waves in ultrarelativistic anisotropic hydrodynamics is investigated. The properties of the amplitudes of perturbations of physical quantities are studied depending on the components of the wave vector of a…

核理论 · 物理学 2023-09-21 Aleksandr Kovalenko

We report a proof that under natural assumptions shock profiles viewed as heteroclinic travelling wave solutions to a hyperbolically regularized system of conservation laws are spectrally stable, if the shock amplitude is sufficiently…

偏微分方程分析 · 数学 2025-01-14 Johannes Bärlin

By using an equivalent form of the uniform Lopatinski condition for 1-shocks, we prove that the stability condition found by the energy method in [A. Morando, Y. Trakhinin, P. Trebeschi, Structural stability of shock waves in 2D…

偏微分方程分析 · 数学 2021-02-18 Yuri Trakhinin

We establish one-dimensional spectral stability of small amplitude viscous and relaxation shock profiles using Evans function techniques to perform a series of reductions and normal forms to reduce to the case of the scalar Burgers…

偏微分方程分析 · 数学 2007-05-23 Ramon Plaza , Kevin Zumbrun

We fill the two main remaining gaps in the full classification of non-degenerate planar traveling waves of scalar balance laws from the point of view of spectral and nonlinear stability/instability under smooth perturbations. On one hand we…

偏微分方程分析 · 数学 2024-04-05 Louis Garénaux , L. Miguel Rodrigues

The main purpose of the present paper is to investigate the nonlinear stability of viscous shock waves and rarefaction wave for bipolar Vlasov-Poisson-Boltzmann (VPB) system. To this end, motivated by the micro-macro decomposition to the…

偏微分方程分析 · 数学 2017-11-22 Hailiang Li , Yi Wang , Tong Yang , Mingying Zhong

Using a combination of Kawashima- and Goodman-type energy estimates, we establish spectral stability of general small-amplitude relaxation shocks of symmetric dissipative systems. This extends previous results obtained by Plaza and Zumbrun…

偏微分方程分析 · 数学 2019-07-25 Corrado Mascia , Kevin Zumbrun

By reduction to a generalized Sturm Liouville problem, we establish spectral stability of hydraulic shock profiles of the Saint-Venant equations for inclined shallow-water flow, over the full parameter range of their existence, for both…

偏微分方程分析 · 数学 2018-10-04 Alim Sukhtayev , Zhao Yang , Kevin Zumbrun

We investigate finite amplitude stability of spatially inhomogeneous steady state of an incompressible viscoelastic fluid which occupies a mechanically isolated vessel with walls kept at spatially non-uniform temperature. For a wide class…

偏微分方程分析 · 数学 2021-04-07 Mark Dostalík , Vít Průša , Judith Stein

Extending previous work with Lattanzio and Mascia on the scalar (in fluid-dynamical variables) Hamer model for a radiative gas, we show nonlinear orbital asymptotic stability of small-amplitude shock profiles of general systems of coupled…

偏微分方程分析 · 数学 2015-05-13 Toan Nguyen , Ramon Plaza , Kevin Zumbrun

Extending results of Oh--Zumbrun and Johnson--Zumbrun for parabolic conservation laws, we show that spectral stability implies nonlinear stability for spatially periodic viscous roll wave solutions of the one-dimensional St. Venant…

偏微分方程分析 · 数学 2010-11-19 Mathew Johnson , Kevin Zumbrun , Pascal Noble

We study the spectrum of the linearization around standing wave profiles for two quantum hydrodynamics systems with linear and nonlinear viscosity. The essential spectrum for such profiles is stable; we investigate the point spectrum using…

混沌动力学 · 物理学 2024-06-06 Delyan Zhelyazov

This work establishes nonlinear orbital asymptotic stability of scalar radiative shock profiles, namely, traveling wave solutions to the simplified model system of radiating gas \cite{Hm}, consisting of a scalar conservation law coupled…

偏微分方程分析 · 数学 2009-05-28 Corrado Lattanzio , Corrado Mascia , Ramon Plaza , Toan Nguyen , Kevin Zumbrun

A model of nonlinear elastic medium with internal structure is considered. The medium is assumed to contain cavities, microcracks or blotches of substances that differ sharply in physical properties from the base material. To describe the…

斑图形成与孤子 · 物理学 2019-09-10 Vsevolod A. Vladimirov , Sergii Skurativskyi

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…

偏微分方程分析 · 数学 2024-02-08 Dingqun Deng , Lingda Xu