Artificial compressibility method and lattice Boltzmann method: Similarities and differences

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Abstract

The artificial compressibility method and the lattice Boltzmann method yield the solutions of the incompressible NavierStokes equations in the limit of the vanishing Mach number. The inclusion of the bulk viscosity is considered to be one of the reasons for the success of the lattice Boltzmann method at least in the 2D case. In the present paper, the robustness of the artificial compressibility method is enhanced by introducing a new dissipation term, which makes high cell-Reynolds number computation possible. The increase of the stability is also confirmed in the linear stability analysis; the magnitude of the eigenvalues are drastically reduced for low resolution. Comparisons are made with the lattice Boltzmann method. It is confirmed that the fortified ACM is more robust as well as more accurate than the lattice Boltzmann method. © 2011 Elsevier Ltd. All rights reserved.

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Ohwada, T., Asinari, P., & Yabusaki, D. (2011). Artificial compressibility method and lattice Boltzmann method: Similarities and differences. Computers and Mathematics with Applications, 61(12), 3461–3474. https://doi.org/10.1016/j.camwa.2010.08.032

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