中国物理B ›› 2015, Vol. 24 ›› Issue (5): 50501-050501.doi: 10.1088/1674-1056/24/5/050501

• GENERAL • 上一篇    下一篇

A multiple-relaxation-time lattice Boltzmann method for high-speed compressible flows

李凯, 钟诚文   

  1. National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an 710072, China
  • 收稿日期:2014-08-16 修回日期:2014-12-29 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:

    Project supported by the Innovation Fund for Aerospace Science and Technology of China (Grant No. 2009200066) and the Aeronautical Science Fund of China (Grant No. 20111453012).

A multiple-relaxation-time lattice Boltzmann method for high-speed compressible flows

Li Kai (李凯), Zhong Cheng-Wen (钟诚文)   

  1. National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2014-08-16 Revised:2014-12-29 Online:2015-05-05 Published:2015-05-05
  • Contact: Zhong Cheng-Wen E-mail:zhongcw@nwpu.edu.cn
  • About author:05.20.Dd; 47.11.Df; 47.40.-x
  • Supported by:

    Project supported by the Innovation Fund for Aerospace Science and Technology of China (Grant No. 2009200066) and the Aeronautical Science Fund of China (Grant No. 20111453012).

摘要:

This paper presents a coupling compressible model of the lattice Boltzmann method. In this model, the multiple-relaxation-time lattice Boltzmann scheme is used for the evolution of density distribution functions, whereas the modified single-relaxation-time (SRT) lattice Boltzmann scheme is applied for the evolution of potential energy distribution functions. The governing equations are discretized with the third-order Monotone Upwind Schemes for scalar conservation laws finite volume scheme. The choice of relaxation coefficients is discussed simply. Through the numerical simulations, it is found that compressible flows with strong shocks can be well simulated by present model. The numerical results agree well with the reference results and are better than that of the SRT version.

关键词: lattice Boltzmann method, multi-relaxation-time, compressible flow, finite volume method

Abstract:

This paper presents a coupling compressible model of the lattice Boltzmann method. In this model, the multiple-relaxation-time lattice Boltzmann scheme is used for the evolution of density distribution functions, whereas the modified single-relaxation-time (SRT) lattice Boltzmann scheme is applied for the evolution of potential energy distribution functions. The governing equations are discretized with the third-order Monotone Upwind Schemes for scalar conservation laws finite volume scheme. The choice of relaxation coefficients is discussed simply. Through the numerical simulations, it is found that compressible flows with strong shocks can be well simulated by present model. The numerical results agree well with the reference results and are better than that of the SRT version.

Key words: lattice Boltzmann method, multi-relaxation-time, compressible flow, finite volume method

中图分类号:  (Kinetic theory)

  • 05.20.Dd
47.11.Df (Finite volume methods) 47.40.-x (Compressible flows; shock waves)