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Lattice Boltzmann Method For Simulating Gas Flow In Microchannels

Author

Listed:
  • G. H. TANG

    (School of Energy and Power Engineering, State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China)

  • W. Q. TAO

    (School of Energy and Power Engineering, State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China)

  • Y. L. HE

    (School of Energy and Power Engineering, State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China)

Abstract

Isothermal gas flows in microchannels is studied using the lattice Boltzmann method. A novel equation relating Knudsen number with relaxation time is derived. The slip-velocity on the solid boundaries is reasonably realized by combining the bounce-back reflection with specular reflection in a certain proportion. Predicted characteristics in a two-dimensional microchannel flow, including slip-velocity, nonlinear pressure drop, friction factors, velocity distribution along the streamwise direction and mass flow rate, are compared with available analytical and experimental results and good agreement is achieved.

Suggested Citation

  • G. H. Tang & W. Q. Tao & Y. L. He, 2004. "Lattice Boltzmann Method For Simulating Gas Flow In Microchannels," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 15(02), pages 335-347.
  • Handle: RePEc:wsi:ijmpcx:v:15:y:2004:i:02:n:s0129183104005747
    DOI: 10.1142/S0129183104005747
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    Citations

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    Cited by:

    1. Zarei, Amir & Karimipour, Arash & Meghdadi Isfahani, Amir Homayoon & Tian, Zhe, 2019. "Improve the performance of lattice Boltzmann method for a porous nanoscale transient flow by provide a new modified relaxation time equation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 535(C).
    2. Yuan, Yudong & Rahman, Sheik, 2016. "Extended application of lattice Boltzmann method to rarefied gas flow in micro-channels," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 463(C), pages 25-36.
    3. Li, Chengwu & Zhao, Yuechao & Ai, Dihao & Wang, Qifei & Peng, Zhigao & Li, Yingjun, 2020. "Multi-component LBM-LES model of the air and methane flow in tunnels and its validation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 553(C).
    4. Tian, Zhi-Wei & Zou, Chun & Liu, Hong-Juan & Guo, Zhao-Li & Liu, Zhao-Hui & Zheng, Chu-Guang, 2007. "Lattice Boltzmann scheme for simulating thermal micro-flow," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 385(1), pages 59-68.

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