A Smoothed Particle Hydrodynamics method with approximate Riemann solvers for simulation of strong explosions

被引：25

作者：

Sirotkin, Fedir V. ^{[1
]}

Yoh, Jack J. ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mech & Aerosp Engn, Seoul 151742, South Korea

来源：

COMPUTERS & FLUIDS | 2013年 / 88卷

关键词：

Smoothed Particle Hydrodynamics; Riemann solver; Shock physics; Interface tracking; GODUNOV-TYPE METHODS; FLOW; SPH;

D O I：

10.1016/j.compfluid.2013.09.029

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A new modification of the Smoothed Particle Hydrodynamics (SPH) method is presented. The performance of the proposed method is checked when used together with Local Lax-Friedrichs (LLF), Harten, Lax, van Leer (HLL) and exact Riemann solvers, and we derive the SPH equations for each applied solver. The validation problems include Sod's problem, Sjogreen test, blast wave tests, and collision of strong shocks problem. On the basis of our results, we conclude that the application of HLL and LLF approximate Riemann solvers is preferable, with LLF solver having a smallest compuational load. The conservative properties of the method are also strong. The linear momentum, the total mass, and the total energy are conserved within machine accuracy for all applied Riemann solvers. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：418 / 429

页数：12

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