An explicit power-law-based wall model for lattice Boltzmann method–Reynolds-averaged numerical simulations of the flow around airfoils

Abstract : In this paper, an explicit wall model based on a power-law velocity profile is proposed for the simulation of the incompressible flow around airfoils at high Reynolds numbers. This wall model is particularly suited for the wall treatment involved in Cartesian grids. Moreover, it does not require an iterative procedure for the friction velocity determination. The validation of this power-law wall model is assessed for Reynolds-averaged Navier-Stokes simulations of the flow around a two-dimensional airfoil using the lattice Boltzmann approach along with the Spalart-Allmaras turbulence model. Good results are obtained for the prediction of the aerodynamic coefficients and the pressure profiles at two Reynolds numbers and several angles of attack. The explicit power-law is thus well suited for a simplified near-wall treatment at high Reynolds numbers using Cartesian grids.
Complete list of metadatas

Cited literature [64 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02116210
Contributor : Olivier Boutin <>
Submitted on : Tuesday, April 30, 2019 - 5:39:44 PM
Last modification on : Tuesday, May 7, 2019 - 1:25:55 AM

File

wilhelm2018.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Sylvia Wilhelm, Jérôme Jacob, Pierre Sagaut. An explicit power-law-based wall model for lattice Boltzmann method–Reynolds-averaged numerical simulations of the flow around airfoils. Physics of Fluids, American Institute of Physics, 2018, 30 (6), pp.065111. ⟨10.1063/1.5031764⟩. ⟨hal-02116210⟩

Share

Metrics

Record views

31

Files downloads

161