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LATTICE-BOLTZMANN MODEL FOR COMPRESSIBLE PERFECT GASES
  • ISSN号:0567-7718
  • 期刊名称:《力学学报:英文版》
  • 时间:0
  • 分类:O354.3[理学—流体力学;理学—力学]
  • 作者机构:State Key Laboratory of Tribology,Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China
  • 相关基金:The project supported by the National Natural Science Foundation of China(Grant Nos.19672030 and 19972037)and by the Scientific Research Foundation for Returned Overseas Chinese Scholars,State Education Ministry
作者: 孙成海
中文摘要:

We present an adaptive lattice Boltzmann model to simulate super-sonic flows.The particle velocities are determined by the mean velocity and internalenergy.The adaptive nature of particle velocities permits the mean flow to have highMach number.A particle potential energy is introduced so that the model is suitablefor the perfect gas with arbitrary specific heat ratio.The Navier-Stokes equationsare derived by the Chapman-Enskog method from the BGK Boltzmann equation.As preliminary tests,two kinds of simulations have been performed on hexagonallattices.One is the one-dimensional simulation for sinusoidal velocity distributions.The velocity distributions are compared with the analytical solution and the mea-sured viscosity is compared with the theoretical values.The agreements are basicallygood.However,the discretion error may cause some non-isotropic effects.The othersimulation is the 29 degree shock reflection.

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期刊信息
  • 《力学学报:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国力学学会 中国科学院力学研究所
  • 主编:卢天健
  • 地址:北京市海淀区北四环西路15号
  • 邮编:100190
  • 邮箱:actams@cstam.org.cn
  • 电话:010-62536271
  • 国际标准刊号:ISSN:0567-7718
  • 国内统一刊号:ISSN:11-2063/O3
  • 邮发代号:2-703
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:352