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We introduce stabilized spline collocation schemes for the numerical solution of nonlinear, hyperbolic conservation laws. A nonlinear, residual-based viscosity stabilization is combined with a projection stabilization-inspired linear…

数值分析 · 数学 2023-07-18 Ryan M. Aronson , John A. Evans

The KdV-Burgers equation is a canonical model describing the interplay between nonlinearity, viscosity and dispersion, and it admits viscous-dispersive shocks as traveling wave solutions. In this paper, we establish an $L^2$-contraction…

偏微分方程分析 · 数学 2026-03-11 Geng Chen , Namhyun Eun , Moon-Jin Kang , Yannan Shen

The viscous and rarefaction effects on centreline shock reflection occurring in an overexpanded axisymmetric microjet have been investigated numerically by means of a fully coupled pressure-based shock capturing scheme. Due to the low…

流体动力学 · 物理学 2024-10-18 Justin Kin Jun Hew , Hideaki Ogawa , Rod W. Boswell

We study the propagation of ultra-short pulses in a cubic nonlinear medium. Using multiple-scale technique, we derive a new wave equation that preserves the nonlocal dispersion present in Maxwell's equations. As a result, we are able to…

可精确求解与可积系统 · 物理学 2007-05-23 Y. Chung , T. Schaefer

We present in this paper both a linear study and numerical relativistic MHD simulations of the non-resonant streaming instability occurring in the precursor of relativistic shocks. In the shock front restframe, we perform a linear analysis…

高能天体物理现象 · 物理学 2015-06-15 F. Casse , A. Marcowith , R. Keppens

We construct and study global solutions for the 3-dimensional incompressible MHD systems with arbitrary small viscosity. In particular, we provide a rigorous justification for the following dynamical phenomenon observed in many contexts:…

偏微分方程分析 · 数学 2016-03-29 Ling-Bing He , Li Xu , Pin Yu

We address the existence and stability of transonic shocks for the two-dimensional steady rotating Euler system in an almost flat nozzle. Under the influence of the Coriolis force, we first establish a class of special transonic shock…

偏微分方程分析 · 数学 2026-04-21 Zihao Zhang

Under the genuinely nonlinear assumption for 1-D $n\times n$ strictly hyperbolic conservation laws, we investigate the geometric blowup of smooth solutions and the development of singularities when the small initial data fulfill the generic…

偏微分方程分析 · 数学 2025-04-18 Min Ding , Huicheng Yin

In this paper we study existence and stability of shock profiles for a 1-D compressible Euler system in the context of Quantum Hydrodynamic models. The dispersive term is originated by the quantum effects described through the Bohm…

偏微分方程分析 · 数学 2019-04-24 Corrado Lattanzio , Pierangelo Marcati , Delyan Zhelyazov

We consider the $L^2$-contraction up to a shift for viscous shocks of scalar viscous conservation laws with strictly convex fluxes in one space dimension. In the case of a flux which is a small perturbation of the quadratic burgers flux, we…

偏微分方程分析 · 数学 2015-10-09 Moon-Jin Kang , Alexis F. Vasseur

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

This paper concerns the dynamic stability of the steady 3-D wave structure of a planar normal shock front intersecting perpendicularly to a planar solid wall for unsteady potential flows. The stability problem can be formulated as a free…

偏微分方程分析 · 数学 2021-08-23 Beixiang Fang , Feimin Huang , Wei Xiang , Feng Xiao

In this paper, we investigate and prove the nonlinear stability of viscous shock wave solutions of a scalar viscous conservation law, using the methods developed for general systems of conservation laws by Howard, Mascia, Zumbrun and…

偏微分方程分析 · 数学 2016-02-29 Yingwei Li

We develop a theory based on relative entropy to show the uniqueness and L^2 stability (up to a translation) of extremal entropic Rankine-Hugoniot discontinuities for systems of conservation laws (typically 1-shocks, n-shocks, 1-contact…

偏微分方程分析 · 数学 2015-05-19 Nicholas Leger , Alexis Vasseur

In this paper we present analytical studies of three-dimensional viscous and inviscid simplified Bardina turbulence models with periodic boundary conditions. The global existence and uniqueness of weak solutions to the viscous model has…

流体动力学 · 物理学 2007-05-23 Y. Cao , E. M. Lunasin , E. S. Titi

In this paper, we are concerned with the large time behavior of viscous shock wave for the convective porous-media equation with degenerate viscosity. We get the regularity of the solution for general initial data and prove the shock wave…

偏微分方程分析 · 数学 2024-01-08 Yechi Liu

This paper studies the stability of weak dispersive shock profiles for a quantum hydrodynamics system in one space dimension with nonlinear viscosity and dispersive (quantum) effects due to a Bohm potential. It is shown that, if the shock…

偏微分方程分析 · 数学 2023-03-10 Raffaele Folino , Ramón G. Plaza , Delyan Zhelyazov

We provide a `user guide' to the literature of the past twenty years concerning the modeling and approximation of discontinuous solutions to nonlinear hyperbolic systems that admit small-scale dependent shock waves. We cover several classes…

偏微分方程分析 · 数学 2013-12-05 Philippe G. LeFloch , Siddhartha Mishra

This paper develops the basic sets of equations which lead to the conservation laws describing collisionless plasma shock waves. We discuss the evolution of shock waves by wave steepening, derive the Rankine-Hugoniot conditions for…

天体物理学 · 物理学 2008-05-16 R. A. Treumann , C. H. Jaroschek

This paper is concerned with the asymptotic stability of a composite wave consisting of two viscous shock waves to the Cauchy problem for a one-dimensional system of heat-conductive ideal gas without viscosity. We extend the results by…

偏微分方程分析 · 数学 2013-07-16 Lili Fan , Akitaka Matsumura