方柱绕流吹气降噪数值研究  

Numerical study on noise reduction by blowing around a square cylinder

作　　者：郭昊[1] 康国强 侯强中 刘沛清[1] GUO Hao;KANG Guoqiang;HOU Qiangzhong;LIU Peiqing(Beihang University(Key Laboratory of Aeroacoustics of Ministry of Industry and Information Technology),Beijing 100191,China)

机构地区：[1]北京航空航天大学陆士嘉实验室(航空气动声学工业和信息化部重点实验室),北京100191

出　　处：《民用飞机设计与研究》2022年第1期24-37,共14页Civil Aircraft Design & Research

基　　金：国家自然科学基金(12072016,11772033,1217021666和11721202)。

摘　　要：通过数值模拟的方法研究了在方柱前缘分离点处施加垂直来流速度方向的吹气控制下,方柱的气动噪声特性。对零度迎角下三维方柱进行了流场和声场特性研究,在固定吹气速度3 m/s和固定吹气速度比(吹气速度/来流速度=0.1)的控制条件下改变来流速度大小的情况,探究吹气降噪机理和吹气控制效果。In this article,the acoustics noise characteristics under the control of blowing in the direction perpendicular to the incoming velocity at the separation point of the leading edge of the square cylinder were studied by numerical simulation,and the flow field and sound field characteristics of the three-dimensional square cylinder at zero angle of attack were studied.Under the control conditions of fixed blowing speed of 3 m/s and fixed blowing speed ratio(blowing speed/incoming speed=0.1),change the incoming speed,and explore the blowing noise reduction mechanism and blowing control effect.

关 键 词：柱体绕流噪声 降噪机理 吹气控制 

分 类 号：V2[航空宇航科学技术]