中文摘要：

边界层逆压梯度作用下的流动是许多工程中的一个基础问题,由于逆压梯度作用,流动形态复杂,使得数值模拟有很大的难度。基于雷诺平均纳维-斯托克斯RANS（Reynolds Averaged Navier-Stokes）方程对二维平板逆压梯度边界层作数值计算研究,选取6种代表性的湍流模式,得到局部摩擦系数的数值解,与实验值比较,发现k-ω模式具有很好的精度。基于该湍流模式,给出了湍动能分布,该结果有助于认识逆压梯度边界层流动的复杂特征。

英文摘要：

Boundary layer flow with adverse pressure gradients （APG） is a basic problem in many engineering applications. Due to APG, the flow becomes complex and is difficult to be simulated by numerical method. In the present paper,a numerical study of two-dimensional boundary layer flow with APG is conducted based on Reynolds-averaged Navier-Stokes （RANS） equations. Six representative turbulence models are evaluated for APG flow. By comparison of numerical local frictional resistance coefficient and experimental results, it revealed that k-of model has a high precision. Meanwhile, the turbulent kinetic energy is also studied,which may be helpful to study the APG flow＇s behavior.