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Article Dans Une Revue Journal of Computational Physics Année : 2014

Wall model for large-eddy simulation based on the lattice Boltzmann method

O. Malaspinas
  • Fonction : Auteur
P. Sagaut

Résumé

An original wall-model for lattice Boltzmann based large-eddy simulation is presented. It relies on either an analytical profile for the velocity profile within the first off-wall cell or the solution of Turbulent Boundary Layer Equations. The latter are solved thanks to a meshless approach to obtain a user-friendly method. The proposed method is observed to be both robust and accurate, yielding very satisfactory results in plane channel flow up to Reτ=20 000Reτ=20 000 on uniform grids with Δx+=Δy+=Δz+=1000Δx+=Δy+=Δz+=1000. The computed maximum error on skin friction is about 4% in most investigated cases on the coarsest grids (10 grid points across the half-channel height). It lies within 1–2% on finer grids with 20–60 uniformly distributed grid points in the channel half-height.
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Dates et versions

hal-01298947 , version 1 (06-04-2016)

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O. Malaspinas, P. Sagaut. Wall model for large-eddy simulation based on the lattice Boltzmann method. Journal of Computational Physics, 2014, 275, pp.25-40. ⟨10.1016/j.jcp.2014.06.020⟩. ⟨hal-01298947⟩
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