A Simplified Lattice Boltzmann Method for Turbulent Flow Simulation

A Simplified Lattice Boltzmann Method for Turbulent Flow Simulation

Year:    2022

Author:    Lan Jiang, Xiangyu Gu, Jie Wu

Advances in Applied Mathematics and Mechanics, Vol. 14 (2022), Iss. 5 : pp. 1040–1058

Abstract

To simulate the incompressible turbulent flows, two models, known as the simplified and highly stable lattice Boltzmann method (SHSLBM) and large eddy simulation (LES) model, are employed in this paper. The SHSLBM was developed for simulating incompressible viscous flows and showed great performance in numerical stability at high Reynolds numbers, which means that this model is capable of dealing with turbulent flows by adding the turbulence model. Therefore, the LES model is combined with SHSLBM. Inspired by the less amount of grids required for SHSLBM, a local grid refinement method is used at relatively high Reynolds numbers to improve computational efficiency. Several benchmark cases are simulated and the obtained numerical results are compared with the available results in literature, which show excellent agreement together with greater computational performance than other algorithms.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/aamm.OA-2021-0056

Advances in Applied Mathematics and Mechanics, Vol. 14 (2022), Iss. 5 : pp. 1040–1058

Published online:    2022-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    19

Keywords:    SHSLBM LES model refined mesh lid-driven cavity flow cavity flow.

Author Details

Lan Jiang

Xiangyu Gu

Jie Wu