CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2020, Vol. 37 ›› Issue (5): 539-550.DOI: 10.19596/j.cnki.1001-246x.8141

Special Issue: 第十届全国青年计算物理会议优秀论文

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Numerical Simulation of One-dimensional Elastic-Perfectly Plastic Flow and Suppression of Wall Heating Phenomenon

LI Xiao1,2, SUN Chen1, SHEN Zhijun1   

  1. 1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Graduate School of China Academy of Engineering Physics, Beijing 100088, China
  • Received:2019-09-17 Revised:2020-01-08 Online:2020-09-25 Published:2020-09-25

Abstract: An HLLC-type approximate Riemann solver is proposed to simulate one-dimensional elastic-perfectly plastic flow with Wilkins model. This Riemann solver introduces plastic wave and has the same wave number with actual physics. The wave speed is determined by characteristic analysis of wave system. The algorithm is simple to implement and does not need iteration. In order to reduce wall heating error in the simulation for strong shock (or rarefaction), wall heating viscosity is designed to effectively suppress the non-physical wall heating phenomenon.

Key words: elastic-plastic flow, plastic wave, Riemann solver, HLLC, wall heating phenomenon

CLC Number: