Simulation of shock wave buffet and its suppression on an OAT15A supercritical airfoil by IDDES

作     者：HUANG JingBo XIAO ZhiXiang LIU Jian FU Song 

作者机构：School of Aerospace EngineeringTsinghua UniversityBeijing 100084China China Aerodynamics Research&Development CenterMianyang 621000China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2012年第55卷第2期

页      面：260-271页

核心收录：

学科分类：08[工学] 080103[工学-流体力学] 080104[工学-工程力学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by EU Project Advanced Turbulence Simulation for Aerodynamic Application Challenges (Grant No.ACP8-GA-2009-233710) the National Natural Science Foundation of China (Grant Nos.11072129 and 10932005) 

主　　题：超临界翼型 冲击波 数值模拟 自助餐 周期性振荡 表面安装 脉动压力 涡流发生器 

摘      要：In the present paper,extremely unsteady shock wave buffet induced by strong shock wave/boundary-layer interactions (SWBLI) on the upper surface of an OAT15A supercritical airfoil at Mach number of 0.73 and angle of attack of 3.5 degrees is first numerically simulated by IDDES,one of the most advanced RANS/LES hybrid *** results imply that conventional URANS methods are unable to effectively predict the buffet phenomenon on the wing surface;IDDES,which involves more flow physics,predicted buffet *** complex flow phenomena are predicted and demonstrated,such as periodical oscillations of shock wave in the streamwise direction,strong shear layer detached from the shock wave due to SWBLI and plenty of small scale structures broken down by the shear layer instability and in the *** root mean square (RMS) of fluctuating pressure coefficients and streamwise range of shock wave oscillation reasonably agree with experimental ***,two vortex generators (VG) both with an inclination angle of 30 degrees to the main flow directions are mounted in front of the shock wave region on the upper surface to suppress shock wave *** results show that shock wave buffet can be significantly suppressed by VGs,the RMS level of pressure in the buffet region is effectively reduced,and averaged shock wave position is obviously pushed downstream,resulting in increased total lift.