合成射流位置对控制翼型分离流动的数值研究  

Numerical study on the control of airfoil separation flow by synthetic jet position

作　　者：曲勇达 任宏伟 常建龙 Qu Yongda;Ren Hongwei;Chang Jianlong(School of Aeronautics and Astronautics,North University of China,Taiyuan 030051;Institute of Intelligent Weapons,North University of China,Taiyuan 030051;Jinxi Industrial Group Co.,Ltd,Taiyuan 030051)

机构地区：[1]中北大学航空宇航学院,太原030051 [2]中北大学智能武器研究院,太原030051 [3]晋西工业集团有限责任公司,太原030051

出　　处：《战术导弹技术》2025年第1期1-14,共14页Tactical Missile Technology

基　　金：国家自然科学基金(12202408);山西省基础研究计划(20210302123040)。

摘　　要：针对各攻角下NACA0012翼型的分离流动,用数值模拟的方法研究了单个合成射流激励器施加在翼型不同位置10%c、40%c和70%c时的翼型流场。与原始流场进行对比分析,结合气动系数、压力系数以及速度云图和流线图,详细分析了合成射流施加位置对翼型流场控制效果的影响和机理。结果表明:在NACA0012翼型处于临界失速状态(α=16°)、深度失速状态(α=20°)以及介于两者之间的失速状态(α=18°)时,在靠近他们各自分离点附近引入合成射流均取得了积极的控制效果。无论是在分离点前还是稍后的位置,射流的放置都能有效地控制分离流动。如果合成射流设置在分离点后方且相对较远的地方,则仅能对流动的局部区域产生作用,对整体流场的影响有限,因此无法实现有效的流动控制。Aiming at the separate flow of NACA0012 airfoil at different angles of attack, the airfoil flow field applied by a single synthetic jet driver at different positions of 10%c, 40%c and 70%c is studied by numerical simulation. The flow field is compared with the original flow field, and the aerodynamic coefficient,pressure coefficient and velocity cloud and flow diagram are combined. The effect of the position of synthetic jet on the control of airfoil flow field and its mechanism are analyzed in detail. The results show that when the NACA0012 airfoil is in the critical stall state(α=16°), deep stall state(α=20°) and the intermediate stall state(α =18°), the introduction of synthetic jet near their respective separation point has achieved good control effect. Whether in front of or behind the separation point, the placement of the jet can effectively control the flow. If the synthetic jet is set behind the separation point and relatively far away, it can only have an effect on the local area of the flow, and has limited influence on the overall flow field, so it cannot achieve effective flow control.

关 键 词：合成射流 分离流动 射流位置 失速 流动控制 数值模拟 气动系数 

分 类 号：TB126[理学—工程力学]