组合式吹吸气控制翼型动态失速数值模拟研究  

Numerical simulation study on dynamic stall of airfoil controlled by combined blow-suction

作　　者：贾天昊 高超[1] 徐泽阳 王玉帅[1] JIA Tianhao;GAO Chao;XU Zeyang;WANG Yushuai(National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学翼型叶栅空气动力学国家级重点实验室,西安710072

出　　处：《航空工程进展》2023年第4期39-46,67,共9页Advances in Aeronautical Science and Engineering

基　　金：国家自然科学基金(12172299)。

摘　　要：改善翼型气动特性的关键问题之一是解决动态失速。提出利用翼型前缘吸气、后缘吹气的组合式吹吸气控制翼型动态失速的方法,研究俯仰振荡条件下其对翼型动态失速特性的影响和控制作用。选取NACA0012翼型为研究对象,基于转捩SST湍流模型求解非定常雷诺平均Navier-Stokes(URANS)方程,计算不同射流动量系数下的翼型气动特性,评估控制过程中的经济性。结果表明:在马赫数0.109,减缩频率0.1,平均攻角14.84°,攻角振幅9.89°条件下,当射流动量系数为0.006 5时与无吹吸气控制对比,翼型无明显失速现象,平均升力系数提高59%,平均阻力系数下降40%,负俯仰力矩峰被消除,使用组合式吹吸气进行流动控制可以抑制动态失速,改善翼型气动特性。One of the key problems to improve the aerodynamic characteristics of airfoil is to solve the dynamic stall.This paper presents a method to control the dynamic stall of airfoil by using the combination of leading-edge suction and trailing edge suction.The influence and control effect of pitch oscillation on the dynamic stall characteristics of airfoil are investigated.Taking NACA0012 airfoil as the research object,the unsteady Reynolds-averaged Navier-Stokes equation is solved based on the transition SST turbulence model,and the aerodynamic characteristics of air‐foil with different jet momentum coefficients are calculated,and the economy in the control process is evaluated.It is found that under the conditions of Mach number 0.109,reduction frequency 0.1,average angle of attack 14.84°and amplitude 9.89°,when the jet dynamic coefficient is 0.0065,compared with the control without blowing and suction,the airfoil has no obvious stall phenomenon,the average lift coefficient increases by 59%,the average drag coefficient decreases by 40%,and the negative pitching moment peak is eliminated,which indicates that the combined blowing-suction flow control can suppress the dynamic stall and improve the aerodynamic characteristics of the airfoil.

关 键 词：动态失速 流动控制 翼型 吹吸气 射流动量系数 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]