雷诺数
物理
格子Boltzmann方法
湍流
翼型
机械
空气动力学
雷诺应力方程模型
雷诺平均Navier-Stokes方程
经典力学
Kε湍流模型
K-omega湍流模型
作者
Sylvia Wilhelm,Jérôme Jacob,Pierre Sagaut
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2018-06-01
卷期号:30 (6)
被引量:71
摘要
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.
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