中文

Journal of Shanghai University >

2026 , Vol. 32 >Issue 4: 714 - 727

DOI: https://doi.org/10.12066/j.issn.1007-2861.2502

Mechanics and Civil Engineering

Lattice Boltzmann method coupled hybrid turbulence model algorithm

  • HE Zejiang ,
  • ZHANG Wu ,
  • ZHU Wenhao ,
  • WANG Liangjun
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  • 1. School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, China;
    2. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200444, China;
    3. Information Technology O-ce, Shanghai University, Shanghai 200444, China

Received date: 2023-01-19

  Online published: 2026-09-04

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Abstract

A hybrid turbulence simulation method combining Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) was proposed based on the lattice Boltzmann method (LBM). RANS/LES-LBM method used a mixed-length RANS turbulence model to solve the problem of large errors in the conventional Smagorinsky model near the wall. Based on the method, a set of LBM parallel programs was independently developed for the hybrid turbulence model. Cylindrical, NACA0012 airfoil flow, and 30P30N three-segment airfoil flow problems were numerically calculated. Calculation results showed that RANS/LES-LBM method improved the error near the wall, had higher calculation accuracy, and exhibited good stability for complex high-Reynolds number flows. LBM paralled program used the OpenMP programming mode for parallel computing and showed good speed-up ratio, scalability, and other parallel performances. LBM multilayer meshes were also studied, which laid the foundation for the numerical simulation of complex geometric flow problems in the future.

Key words： lattice Boltzmann method (LBM); hybrid turbulence model; high Reynolds number; parallel computing

Cite this article

HE Zejiang , ZHANG Wu , ZHU Wenhao , WANG Liangjun . Lattice Boltzmann method coupled hybrid turbulence model algorithm[J]. Journal of Shanghai University, 2026 , 32(4) : 714 -727 . DOI: 10.12066/j.issn.1007-2861.2502

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