Abstract

The paper is devoted to numerical simulation of multicomponent gas flows based on extended Euler equations using a modified explicit Godunov-type scheme. A feature of the used algorithm is to take into account strong shock waves and occurrence of pressure oscillations at contact boundaries. This is expressed by the use of exact solutions of the corresponding Riemann problem and special double-flux modification of Godunov-flux. Numerical simulation results demonstrate the robustness of present method and good agreement with the one- and two-dimensional test data of other groups and laboratory experiments.

中文翻译：

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使用双通量方法模拟多组分气流

摘要

本文致力于基于扩展欧拉方程的多组分气流的数值模拟，使用改进的显式 Godunov 型方案。所用算法的一个特点是考虑到强冲击波和接触边界处压力振荡的发生。这通过使用相应黎曼问题的精确解和 Godunov-flux 的特殊双通量修正来表达。数值模拟结果证明了该方法的稳健性，并与其他组的一维和二维测试数据和实验室实验具有良好的一致性。