摘要
以NACA0012翼型为例,基于CFD方法对该翼型进行了网格划分,得到一套适合于分析动态失速的高精度贴边网格。在此基础上采用雷诺时均N-S方程,标准k-ω模型建立了翼型在非常定流场中的动态失速计算方法,并运用Fluent对其进行了数值计算。讨论并分析了相应算例中翼型在动态失速情况下涡流、翼型上下表面压力及升力特性的变化情况。
Taking the NACA0012 airfoil as an example,the airfoil is meshed based on CFD method,and a set of highprecision welt mesh suitable for analyzing dynamic stall is obtained.The dynamic stall calculation method of airfoil in unsteady flow field is established by using Reynolds time-averaged N-S equation and standard k-ωmodel,and numerical calculation is carried out by Fluent.The variation of the vortex,the upper and lower surface pressure and the lift characteristics of the airfoil under dynamic stall in the corresponding examples are discussed and analyzed.
作者
魏良
WEI Liang(Flight Division,Southwest Branch of Air China,Chengdu 610200,China)
出处
《机械工程师》
2019年第3期127-129,共3页
Mechanical Engineer
关键词
动态失速
网格划分
数值计算
参数分析
dynamic stall
meshing
numerical calculation
parameter analysis
