A large-eddy-based lattice Boltzmann model for turbulent flow simulation |
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| Authors: | Sheng Chen |
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| Affiliation: | aState Key Lab of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China;bInstitute for Computational Modeling in Civil Engineering, Technical University, Braunschweig 38106, Germany |
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| Abstract: | In this paper a novel and simple large-eddy-based lattice Boltzmann model is proposed to simulate two-dimensional turbulence. Unlike existing lattice Boltzmann models for turbulent flow simulation, which were based on primitive-variables Navier–Stokes equations, the target macroscopic equations of the present model are vorticity-streamfunction equations. Thanks to the intrinsic features of vorticity-streamfunction equations, the present model is efficient, stable and simple for two-dimensional turbulence simulation. The advantages of the present model are validated by numerical experiments. |
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| Keywords: | Turbulence Lattice Boltzmann method Large-eddy simulation (LES) |
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