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Mrt Rectangular Lattice Boltzmann Method

Author

Listed:
  • JIAN GUO ZHOU

    (School of Engineering, University of Liverpool, Liverpool L69 3GQ, United Kingdom)

Abstract

A multiple-relaxation-time (MRT) collision operator is introduced into the author's rectangular lattice Boltzmann method for simulating fluid flows. The model retains both the advantages and the standard procedure of using a constant transformation matrix in the conventional MRT scheme on a square lattice, leading to easy implementation in the algorithm. This allows flow problems characterized by dominant feature in one direction to be solved more efficiently. Two numerical tests have been carried out and shown that the proposed model is able to capture complex flow characteristics and generate an accurate solution if an appropriate lattice ratio is used. The model is found to be more stable compared to the original rectangular lattice Boltzmann method using the single relaxation time.

Suggested Citation

  • Jian Guo Zhou, 2012. "Mrt Rectangular Lattice Boltzmann Method," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 23(05), pages 1-17.
    • Handle: RePEc:wsi:ijmpcx:v:23:y:2012:i:05:n:s0129183112500404
    DOI: 10.1142/S0129183112500404
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