空气动力学学报2024，Vol.42Issue(6)：76-87,12.DOI:10.7638/kqdlxxb-2023.0166
可调缝道构型对翼型气动特性的影响
The influence of adjustable slot configuration on aerodynamic characteristics of airfoil
摘要
Abstract
Even though slotted airfoils can effectively inhibit flow separation on the airfoil suction surface and thus improve the aerodynamic performance during stall,they may undermine the aerodynamic performance at small angles of attack. In this paper,we studied the influence of slot parameters on the aerodynamic characteristics of airfoil S809 utilizing CFD (Computational Fluid Dynamics) simulations,with the aim to design an adjustable slot that can realize significant improvement of aerodynamic performance at both small and large angles of attack. Exploiting numerical simulation results yielded a base slot configuration that can considerably improve airfoil's stall characteristics,with the maximum lift coefficient increased by 70.8％and the stall angle of attack delayed to 21°. By translating and rotating the basic slot configuration,we obtained a trapezoidal curved slot that allows slight adjustment and two slot configurations that can maintain the airfoil's aerodynamic characteristics at small angles of attack. Moreover,based on the geometric relationship between the basic slot configuration and the one rotated anticlockwise by 5°,we proposed an adjustable slot configuration that can significantly improve the stall characteristics and does not undermine the aerodynamic characteristics at small angles of attack. The proposed adjustable slot configurations shed some lights on designing slotted airfoils.关键词
可调缝道/翼型开缝/失速特性/数值模拟/流动控制Key words
adjustable slot/airfoil slotted/stall characteristics/numerical simulation/flow control分类
航空航天引用本文复制引用
吕文豪,张智昊,郝礼书,高永卫..可调缝道构型对翼型气动特性的影响[J].空气动力学学报,2024,42(6):76-87,12.基金项目
翼型、叶栅空气动力学国家级重点实验室基金 （）
