Improving the low Mach number steady state convergence of the cascaded lattice Boltzmann method by preconditioning
نویسندگان
چکیده
منابع مشابه
Steady state convergence acceleration of the generalized lattice Boltzmann equation with forcing term through preconditioning
Several applications exist in which lattice Boltzmann methods (LBM) are used to compute stationary states of fluid motions, particularly those driven or modulated by external forces. Standard LBM, being explicit time-marching in nature, requires a long time to attain steady state convergence, particularly at low Mach numbers due to the disparity in characteristic speeds of propagation of differ...
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By realizing the insufficient degree of Galilean invariance of the traditional multiple-relaxation-time collision operators, Geier [Phys. Rev. E 73, 066705 (2006)] proposed to relax differently the moments shifted by the macroscopic velocity, leading to the so-called cascaded lattice Boltzmann method (LBM). This paper points out that (a) the cascaded LBM essentially consists in adopting a gener...
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ژورنال
عنوان ژورنال: Computers & Mathematics with Applications
سال: 2019
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2016.12.034