GAW-1两段翼开缝气动特性的影响分析  

Investigation on the influence of aerodynamic characteristics of GAW-1 two-element airfoil with slot

作　　者：张智昊 郝礼书[1] 高永卫[1] 吕文豪 ZHANG Zhihao;HAO Lishu;GAO Yongwei;LYU Wenhao(National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University,Xi’an 710072,China;Unmanned System Research Institute,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 [2]西北工业大学无人系统研究院,西安710072

出　　处：《航空工程进展》2025年第1期64-74,共11页Advances in Aeronautical Science and Engineering

基　　金：翼型、叶栅空气动力学国家级重点实验室基金(D5150240010)。

摘　　要：翼型开缝是一种利用缝道射流改善翼型失速特性的被动流动控制技术,具有结构简单、易实现的特点。采用CFD方法对GAW-1两段翼进行开缝研究,探究缝道参数对多段翼型气动特性的影响。设计9种缝道构型,给出直线、曲线和导流片三大类缝道构型间的几何联系,并提出一种曲边梯形缝道构型,分析导流片缝道构型对翼型气动特性的影响。结果表明:缝道位置是影响抑制翼型失速发展的关键因素,曲边梯形缝道构型的最佳缝道位置是13.5%c,该缝道抑制失速的能力最强,翼型失速迎角推迟7°,最大升力系数提高19.5%,达到3.89;导流片缝道构型不仅能减弱缝道在小迎角情况下对气动特性的破环,还能减缓失速的发展,改善翼型的失速特性。As a passive flow control technology,airfoil slotting has the characteristics of simple structure and high efficiency in improving stall.CFD method is used to study the slotting of GAW-1 two-element airfoil to explore the influence of slot parameters on the aerodynamic characteristics of multi-element airfoil.Nine kinds of slot config⁃urations are designed,and the geometric relations among three types of slot configurations,namely straight line,curve and deflector,are given,and a curved trapezoidal slot configuration is proposed.The influence of the deflec⁃tor slot configuration on the aerodynamic characteristics of the airfoil is studied.The results show that the slot posi⁃tion is the key factor to restrain the stall development of airfoil,and the optimal slot position of curved trapezoidal slot configuration is 13.5%c.The slot has the strongest ability to restrain stall,the stall angle of attack of airfoil is delayed by 7°,and the maximum lift coefficient is increased by 19.5%,reaching 3.89.The deflector slot configura⁃tion can not only weaken the damage of the slot to the aerodynamic characteristics at a small angle of attack,but al⁃so slow down the stall development and improve the stall characteristics of the airfoil.

关 键 词：翼型开缝 多段翼型 流动控制 数值模拟 导流片 

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]