CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2020, Vol. 37 ›› Issue (1): 55-62.DOI: 10.19596/j.cnki.1001-246x.7979

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A Multi-component Mie-Grüneisen Mixture Model Based on HLLC Algorithm

WU Zongduo1, YAN Jin1, ZONG Zhi2, ZHAO Yong3   

  1. 1. College of Ocean Engineering, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China;
    2. Department of Naval Architecture, Dalian University of Technology, Dalian, Liaoning 116024, China;
    3. Transportation Engineering Postdoctoral Research Station, Dalian Maritime University, Dalian, Liaoning 116026, China
  • Received:2018-10-10 Revised:2018-11-30 Online:2020-01-25 Published:2020-01-25

Abstract: A revised robust HLLC(Harten-Lax-Van Leer-Contact) solver for multi-component Mie-Grüneisen mixture model is established. In Mie-Grüneisen mixture model, flux can be divided into conservative part and non-conservative part. Original HLLC scheme can well adapt to conservative part. As the original HLLC solver is directly extended to non-conservative part, oscillation is hard to be controlled. In original scheme, moving speed of discontinuous section refers to velocity at left or right side of the gird. It is replaced by average velocity within the grid. After the revision, the HLLC scheme is deduced again and extended to 2D problem. Numerical tests show that Mie-Grüneisen mixture model is robust and accurate with the help of modified HLLC solver.

Key words: multicomponent Riemann problem, HLLC solver, Mie-Grüneisen equation, non-conservative model

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