摘要
采用求解低速流动的ＳＩＭＰＬＥ算法，用标准Ｋ－ε两方程模型、非线性Ｋ－ε两方程模型和一种改进的Ｋ－ε两方程模型来对绕两种翼型（Ａ翼型和ＧＡＷ－１翼型）在接近失速攻角情况下的低速湍流流动进行了数值模拟。计算结果表明，非线性Ｋ－ε两方程模型和改进的Ｋ－ε两方程模型较好地模拟出了翼型表面上的分离流动特性，较准确地预测出了分离点位置以及翼型的气动力系数，对翼型与机翼的工程设计具有一定的参考价值。
The low mach number turbulent flow past two kinds of airfoils, a airfoil and GAW 1 airfoil, at the attack angle of near stall condition is numerically simulated with SIMPLE algorithm and three turbulence models including the standard K ε two equation turbulence model (SKE), a nonlinear K ε two equation turbulence model (NKE), and a modified K ε two equation turbulence model (MKE). The results show that both the NKE and the SKE successfully simulate the separated flow pattern on the airfoil surface, and accurately predict the location of separation and the aerodynamic force coefficients. Therefore, these two models are of engineering value in the design of the airfoil and the wing.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1999年第3期261-264,共4页
Acta Aeronautica et Astronautica Sinica
关键词
湍流
翼型
两方程湍流模型
数值模拟
turbulent flow
airfoil
two equation turbulence model
