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Immersed Boundary Method Based Lattice Boltzmann Method To Simulate 2d And 3d Complex Geometry Flows

Author

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  • DI-JIA CHEN

    (Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan)

  • KUN-HAO LIN

    (Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan)

  • CHAO-AN LIN

    (Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan)

Abstract

In this paper, the lattice Boltzmann method is combined with the immersed boundary technique to simulate complex geometry flows. The complex geometry is represented by Lagrangian markers and forces are exerted at the Lagrangian markers in order to satisfy the prescribed velocity of the boundary. This force at the Lagrangian markers is then distributed to the Eulerian grid by a well-chosen discretized delta function. With the known force field in the Eulerian grid to mimic the boundary, the lattice Boltzmann method is used to compute the flow field where the complex geometry is immersed inside the Cartesian computational domain. Numerical experiments show that the second-order accuracy of the adopted numerical scheme is degraded to 1.8 order. The proposed method is examined by computing decaying vortex, lid driven cavity flow and 2D and 3D flows over asymmetrically placed cylinder. All the numerical results are compatible with the benchmark solutions.

Suggested Citation

  • Di-Jia Chen & Kun-Hao Lin & Chao-An Lin, 2007. "Immersed Boundary Method Based Lattice Boltzmann Method To Simulate 2d And 3d Complex Geometry Flows," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 18(04), pages 585-594.
    • Handle: RePEc:wsi:ijmpcx:v:18:y:2007:i:04:n:s0129183107010826
    DOI: 10.1142/S0129183107010826
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    Cited by:

    1. Farnoush, Somayeh & Manzari, Mehrdad T., 2014. "Comparison of boundary slip for two variants of immersed boundary method in lattice Boltzmann framework," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 404(C), pages 200-216.

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