CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2018, Vol. 35 ›› Issue (4): 379-387.DOI: 10.19596/j.cnki.1001-246x.7680

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A Three-dimensional Multiple-Relaxation-Time Lattice Boltzmann Method for Whole-Speed-Range

CHEN Feng1, XU Aiguo2,3, ZHANG Guangcai2, JIAO Peigang1   

  1. 1. Shandong Jiaotong University, Jinan 250357, China;
    2. National Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    3. Center for Applied Physics and Technology, MOE Key Center for High Energy Density Physics Simulations, College of Engineering, Peking University, Beijing 100871, China
  • Received:2017-04-25 Revised:2017-07-24 Online:2018-07-25 Published:2018-07-25

Abstract: A three-dimensional (3D) free-parameter multiple-relaxation-time lattice Boltzmann method for high speed compressible and low speed incompressible flows is presented. In the approach transformation matrix is constructed according to irreducible representation basis functions of SO(3) group. Equilibria of nonconserved moments are chosen so as to recover compressible Navier-Stokes equations through Chapman-Enskog analysis. Sizes of discrete velocities are flexible. Influence of model parameters on numerical stability is analyzed. Reference values of parameters are suggested. To validate performance of the model, several well-known benchmark problems ranging from 1D to 3D are simulated. Numerical results are in good agreement with analytical solutions and/or other numerical results.

Key words: lattice Boltzmann method, compressible flows, multiple-relaxation-time

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