Eulerian droplet model: Delta-shock waves and solution of the Riemann problem

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS

卷:472

Article

Keita, Sana¹  Bourgault, Yves¹ 

[1] Univ Ottawa, Dept Math & Stat, Ottawa, ON K1N 6N5, Canada

关键词: Eulerian particle model;    Burgers equation;    Source term;    Blowup;    Delta-shock waves;    Generalized Rankine-Hugoniot conditions;   

DOI  :  10.1016/j.jmaa.2018.11.061

来源: Elsevier

【 摘 要 】

We study an Eulerian droplet model which can be seen as the pressureless gas system with a source term, a subsystem of this model and the inviscid Burgers equation with source term. The condition for loss of regularity of a solution to Burgers equation with source term is established. The same condition applies to the Eulerian droplet model and its subsystem. The Riemann problem for the Eulerian droplet model is constructively solved by going through the solution of the Riemann problems for the inviscid Burgers equation with a source term and the subsystem, respectively. Under suitable generalized Rankine-Hugoniot relations and entropy condition, the existence of delta-shock solution is established. The existence of a solution to the generalized Rankine-Hugoniot conditions is proven. Some numerical illustrations are presented. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

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