Modification of k-ω Turbulence Model for Predicting Airfoil Aerodynamic Performance  

作　　者：PENG Bo YAN Hao FANG Hong WANG Ming 

机构地区：[1]School of Economics and Management, Beihang University [2]National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University [3]Shenyang Aeroengine Research Institute

出　　处：《Journal of Thermal Science》2015年第3期221-228,共8页热科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51420105008,No.51376001);the National Basic Research Program of China(2012CB720205,2014CB046405)

摘　　要：Predicting wind turbine S825 airfoil＇s aerodynamic performance is crucial to improving its energy efficiency and reducing its environmental impact. In this paper, a numerical simulation on the wind turbine S825 airfoil is con- ducted with k-to turbulence model at different attack angles. By comparing with experimental data, a new method of modifying k-to model is proposed. A modifying function is proposed to limit the production term in ω equation based on fluid rotation and deformation. This method improves turbulent viscosity and decreases separating re- gion when the airfoil works at large separating conditions. The predictive accuracy could be improved by using the modified k-to turbulence model.

关 键 词：S825 airfoil SEPARATION k-ω model aerodynamic performance NON-EQUILIBRIUM 

分 类 号：O357.5[理学—流体力学] P737.121[理学—力学]