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Extending results of Humpherys-Lyng-Zumbrun in the one-dimensional case, we use a combination of asymptotic ODE estimates and numerical Evans-function computations to examine the multidimensional stability of planar Navier--Stokes shocks…

Analysis of PDEs · Mathematics 2017-08-02 Jeffrey Humpherys , Gregory Lyng , Kevin Zumbrun

We establish long-time stability of multi-dimensional noncharacteristic boundary layers of a class of hyperbolic--parabolic systems including the compressible Navier--Stokes equations with inflow [outflow] boundary conditions, under the…

Mathematical Physics · Physics 2008-08-01 Toan Nguyen , Kevin Zumbrun

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…

Analysis of PDEs · Mathematics 2008-11-10 Kevin Zumbrun

Extending our previous work in the strictly parabolic case, we show that a linearly unstable Lax-type viscous shock solution of a general quasilinear hyperbolic--parabolic system of conservation laws possesses a translation-invariant center…

Analysis of PDEs · Mathematics 2015-05-13 Kevin Zumbrun

Extending to systems of hyperbolic--parabolic conservation laws results of Howard and Zumbrun for strictly parabolic systems, we show for viscous shock profiles of arbitrary amplitude and type that necessary spectral (Evans function)…

Analysis of PDEs · Mathematics 2007-05-23 Mohammadreza Raoofi , Kevin Zumbrun

Extending our earlier work on Lax-type shocks of systems of conservation laws, we establish existence and stability of curved multidimensional shock fronts in the vanishing viscosity limit for general Lax- or undercompressive-type shock…

Analysis of PDEs · Mathematics 2007-05-23 Olivier Gues , Guy Métivier , Mark Williams , Kevin Zumbrun

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…

Analysis of PDEs · Mathematics 2015-05-13 Toan Nguyen , Ramon Plaza , Kevin Zumbrun

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…

Analysis of PDEs · Mathematics 2008-04-09 Toan Nguyen , Kevin Zumbrun

We study the three-dimensional structural stability of shock waves for the equations of elastodynamics governing isentropic flows of compressible inviscid elastic materials. By nonlinear structural stability of a shock wave we mean the…

Analysis of PDEs · Mathematics 2025-07-01 Artem Shafeev , Yuri Trakhinin

We investigate one- and multi-dimensional stability of noncharacteristic boundary layers in the limit approaching a standing planar shock wave $\bar U(x_1)$, $x_1>0$, obtaining necessary conditions of (i) weak stability of the limiting…

Analysis of PDEs · Mathematics 2008-09-16 Kevin Zumbrun

Using a simplified pointwise iteration scheme, we establish nonlinear phase-asymptotic orbital stability of large-amplitude Lax, undercompressive, overcompressive, and mixed under--overcompressive type shock profiles of strictly parabolic…

Analysis of PDEs · Mathematics 2007-05-23 Peter Howard , Kevin Zumbrun

This paper establishes the nonlinear time-asymptotic stability of shifted planar viscous shock waves for the three-dimensional relaxed compressible Navier-Stokes equations, in which a modified Maxwell-type model replaces the classical…

Analysis of PDEs · Mathematics 2025-11-12 Renyong Guan , Yuxi Hu

We investigate existence and stability of viscoelastic shock profiles for a class of planar models including the incompressible shear case studied by Antman and Malek-Madani. We establish that the resulting equations fall into the class of…

Analysis of PDEs · Mathematics 2015-05-19 Blake Barker , Marta Lewicka , Kevin Zumbrun

In this paper, we consider the large time asymptotic nonlinear stability of a superposition of shock waves with contact discontinuities for the one dimensional Jin-Xin relaxation system with small initial perturbations, provided that the…

Analysis of PDEs · Mathematics 2014-02-12 Hualin Zheng

In several space dimensions, scalar shock waves between two constant states u $\pm$ are not necessarily planar. We describe them in detail. Then we prove their asymptotic stability, assuming that they are uniformly non-characteristic. Our…

Analysis of PDEs · Mathematics 2021-03-18 Denis Serre

We give the first proof of nonlinear stability for smooth shock profiles of second-order dissipative hyperbolic-hyperbolic systems under the assumption of spectral stability, showing stability of smooth small-amplitude profiles in…

Analysis of PDEs · Mathematics 2025-10-13 Matthias Sroczinski , Kevin Zumbrun

Extending investigations of Barker, Humpherys, Lafitte, Rudd, and Zumbrun for compressible gas dynamics and Freist\"uhler and Trakhinin for compressible magnetohydrodynamics, we study by a combination of asymptotic ODE estimates and…

Analysis of PDEs · Mathematics 2017-06-09 Blake Barker , Jeffrey Humpherys , Kevin Zumbrun

We present a streamlined account of recent developments in the stability theory for planar viscous shock waves, with an emphasis on applications to physical models with ``real,'' or partial viscosity. The main result is the establishment of…

Analysis of PDEs · Mathematics 2007-05-23 Kevin Zumbrun

We study extremal shocks of $1$-d hyperbolic systems of conservation laws which fail to be genuinely nonlinear. More specifically, we consider either $1$- or $n$-shocks in characteristic fields which are either concave-convex or…

Analysis of PDEs · Mathematics 2025-05-20 Jeffrey Cheng

For scalar conservation laws, we prove that spectrally stable stationary Lax discrete shock profiles are nonlinearly stable in some polynomially-weighted $\ell^1$ and $\ell^\infty$ spaces. In comparison with several previous nonlinear…

Analysis of PDEs · Mathematics 2025-04-01 Lucas Coeuret
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