Improved wall model treatment for aerodynamic flows in LBM

被引：23

作者：

Degrigny, Johan ^{[1
,2
]}

Cai, Shang-Gui ^{[3
]}

Boussuge, Jean- Francois- ^{[1
]}

Sagaut, Pierre ^{[3
]}

机构：

[1] CERFACS, 42 Ave Gaspard Coriolis, F-31057 Toulouse, France

[2] Airbus Operat SAS, 316 Route Bayonne, F-31060 Toulouse, France

[3] Aix Marseille Univ, CNRS, Cent Marseille, M2P2,UMR 7340, F-13451 Marseille, France

来源：

COMPUTERS & FLUIDS | 2021年 / 227卷

关键词：

Lattice Boltzmann method; Immersed boundaries; Wall model; Wall function; High Reynolds number; Reynolds-Averaged Navier-Stokes; LATTICE BOLTZMANN METHOD; LARGE-EDDY SIMULATION; ALLMARAS TURBULENCE MODEL; IMMERSED BOUNDARY METHOD; REYNOLDS-NUMBERS; PREDICTION; FLUID; POWERFLOW; AIRFOIL;

D O I：

10.1016/j.compfluid.2021.105041

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The article deals with an improved treatment of wall models for the simulation of turbulent flows in the framework of Immersed Wall Boundaries on Cartesian grids. The emphasis is put on the implementa-tion in a Lattice-Boltzmann Method solver without loss of generality, since the proposed approach can be used in Navier-Stokes-based solvers in a straightforward way. The proposed improved wall model im-plementation relies on the combination of several key elements, namely i) the removal of grid points too close to the solid surface and ii) an original computation of wall normal velocity gradient and iii) the interpolation scheme. The new method is successfully assessed considering URANS simulations focusing on steady solutions of the Zero Pressure Gradient turbulent flat plate boundary layer and the turbulent flow around a NACA0012 airfoil at several angles of attack. (c) 2021 Elsevier Ltd. All rights reserved.

引用

页数：16

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