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Lattice-Boltzmann simulation for pressure driven microscale gas flows in transition regime

Author

Listed:
  • Xiang-Ji Yue

    (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, P. R. China)

  • Ze-Huan Wu

    (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, P. R. China)

  • Yao-Shuai Ba

    (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, P. R. China)

  • Yan-Jun Lu

    (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, P. R. China)

  • Zhi-Peng Zhu

    (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, P. R. China)

  • De-Chun Ba

    (School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, P. R. China)

Abstract

This paper carries out numerical simulation for pressure driven microscale gas flows in transition flow regime. The relaxation time of LBM model was modified with the application of near wall effective mean free path combined with a combination of Bounce-back and Specular Reflection (BSR) boundary condition. The results in this paper are more close to those of DSCM and IP-DSCM compared with the results obtained by other LBM models. The calculation results show that in transition regime, with the increase of Knudsen number, the dimensionless slip velocity at the wall significantly increases, but the maximum linear deviation of nonlinear pressure distribution gradually decreases.

Suggested Citation

  • Xiang-Ji Yue & Ze-Huan Wu & Yao-Shuai Ba & Yan-Jun Lu & Zhi-Peng Zhu & De-Chun Ba, 2015. "Lattice-Boltzmann simulation for pressure driven microscale gas flows in transition regime," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 26(04), pages 1-9.
    • Handle: RePEc:wsi:ijmpcx:v:26:y:2015:i:04:n:s0129183115500370
    DOI: 10.1142/S0129183115500370
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