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Stability And Accuracy Of Lattice Boltzmann Schemes For Anisotropic Advection-Diffusion Equations

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  • SHINSUKE SUGA

    (Social and Environmental Systems Division, National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305-8506, Japan)

Abstract

The stability of the numerical schemes for anisotropic advection-diffusion equations derived from the lattice Boltzmann equation with the D2Q4 particle velocity model is analyzed through eigenvalue analysis of the amplification matrices of the scheme. Accuracy of the schemes is investigated by solving benchmark problems, and the LBM scheme is compared with traditional implicit schemes. Numerical experiments demonstrate that the LBM scheme produces stable numerical solutions close to the analytical solutions when the values of the relaxation parameters inxandydirections are greater than 1.9 and the Courant numbers satisfy the stability condition. Furthermore, the numerical solutions produced by the LBM scheme are more accurate than those of the Crank–Nicolson finite difference scheme for the case where the Courant numbers are set to be values close to the upper bound of the stability region of the scheme.

Suggested Citation

  • Shinsuke Suga, 2009. "Stability And Accuracy Of Lattice Boltzmann Schemes For Anisotropic Advection-Diffusion Equations," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 20(04), pages 633-650.
    • Handle: RePEc:wsi:ijmpcx:v:20:y:2009:i:04:n:s0129183109013856
    DOI: 10.1142/S0129183109013856
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    Cited by:

    1. Oleg Ilyin, 2023. "Hybrid Lattice Boltzmann Model for Nonlinear Diffusion and Image Denoising," Mathematics, MDPI, vol. 11(22), pages 1-12, November.
    2. Ilyin, Oleg, 2023. "Lattice Boltzmann model for diffusion equation with reduced truncation errors: Applications to Gaussian filtering and image processing," Applied Mathematics and Computation, Elsevier, vol. 456(C).

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