Document Type

Article

Publication Date

2014

DOI

10.1016/j.jcp.2014.06.047

Publication Title

Journal of Computational Physics

Volume

275

Pages

257-272

Abstract

The thermal lattice Boltzmann equation (TLBE) with multiple-relaxation-times (MRT) collision model is used to simulate the steady thermal convective flows in the two-dimensional square cavity with differentially heated vertical walls at high Rayleigh numbers. The MRT-TLBE consists of two sets of distribution functions, i.e., a D2Q9 model for the mass-momentum equations and a D2Q5 model for the temperature equation. The dimensionless flow parameters are the following: the Prandtl number Pr = 0.71 and the Rayleigh number Ra = 106, 107, and 108. The D2Q9 + D2Q5 MRT-TLBE is shown to be second-order accurate and to be capable of yielding results of benchmark quality, including various Nusselt numbers and local hydrodynamic intensities. Our results also agree well with existing benchmark data obtained by other methods

Comments

NOTE: This is the author's pre-print version of a work that was published in Journal of Computational Physics. The final version was published as:

Contrino, D., Lallemand, P., Asinari, P., & Luo, L. S. (2014). Lattice-Boltzmann simulations of the thermally driven 2D square cavity at high rayleigh numbers. Journal of Computational Physics, 275, 257-272. doi:10.1016/j.jcp.2014.06.047

Available at: http://dx.doi.org/10.1016/j.jcp.2014.06.047

Original Publication Citation

Contrino, D., Lallemand, P., Asinari, P., & Luo, L. S. (2014). Lattice-Boltzmann simulations of the thermally driven 2D square cavity at high Rayleigh numbers. Journal of Computational Physics, 275, 257-272. doi:10.1016/j.jcp.2014.06.047

ORCID

0000-0003-1215-7892 (Luo)

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