Numerical Study of Airfoil Flows with the k -ω Model

摘要：

The turbulent flows over AS240 and NACA4412 airfoils had been simulated numerically. A novel two-equation turbulence model named k -√ω model has been used, which is directly derived from standard k-ω and &k-ω models based on a new standpoint. In this paper, velocity profiles and the aerodynamic coefficients of airfoil AS240 at 8°/ 19° attack angle and NACA4412 at 13.87° had been calculated and compared to experimental data. The good agreement between the numerical results using the k -√ω model and the experiment data indicates that the new k -√ω model offers realistic prediction. The main finding of the study is that the new k -√ω model is good at prediction of separated flows and captures the flow feature of that pressure-induced separation adequately. All calculations are implemented on OpenFOAM 1. 7. KOpen Source Field Operation and Manipulation).

关键词： turbulent flow airfoil turbulence model separation

作者: GAO Lin JIANG Li-jun CUI Shu-xin GAO Ge

作者单位: National Key Lab. Of Science and Technology on Aero-Engine Aero-thermodynamics,School of Jet Propulsion,BUAA, Beijing,China

会议类型: 国际会议

会议名称: 4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)

会议地点: 西安

会议语种:英文

页码: 720-724

在线出版日期: 2012-09-10（万方平台首次上网日期，不代表论文的发表时间）