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Simulation Of Flow Past A Circular Cylinder Using Entropic Lattice Boltzmann Method

Author

Listed:
  • CHUAN GU

    (LAV, Institute of Energy Technology, ETH Zurich, Switzerland)

  • SHYAM S. CHIKATAMARLA

    (LAV, Institute of Energy Technology, ETH Zurich, Switzerland)

  • ILIYA V. KARLIN

    (LAV, Institute of Energy Technology, ETH Zurich, Switzerland)

Abstract

The entropic lattice Boltzmann method (ELBM) has been demonstrated to bring unconditional stability and accuracy to sub-gird flow simulations. However, the application of ELBM to engineering flows were restricted so far due to the lack of a matching wall boundary condition that retains the accuracy of the method for both resolved and under-resolved simulations. To this end, we show that the recently proposed wall boundary condition for ELBM is reliable and accurate for both these regimes. Three-dimensional (3D) flow past a circular cylinder is taken as a benchmark to show that ELBM is both stable and accurate for range of Reynolds numbers and grid sizes. Several key parameter of this flow are studied in detail.

Suggested Citation

  • Chuan Gu & Shyam S. Chikatamarla & Iliya V. Karlin, 2014. "Simulation Of Flow Past A Circular Cylinder Using Entropic Lattice Boltzmann Method," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 25(01), pages 1-8.
    • Handle: RePEc:wsi:ijmpcx:v:25:y:2014:i:01:n:s012918311340024x
    DOI: 10.1142/S012918311340024X
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    Keywords

    Lattice Boltzmann method; turbulent flow;

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