D型体主被动结合流动控制研究  

Flow Control of Active and Passive Combination of D-Shaped Bluff Body

作　　者：杨志刚[1,2,3] 韩业恺 李启良 单希壮[1,2] YANG Zhigang;HAN Yekai;LI Qiliang;SHAN Xizhuang(Shanghai Automotive Wind Tunnel Center,Tongji University,Shanghai 201804,China;Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems,Tongji University,Shanghai 201804,China;Beijing Aeronautical Science and Technology Research Institute,Beijing 102211,China)

机构地区：[1]同济大学上海地面交通工具风洞中心,上海201804 [2]同济大学上海市地面交通工具空气动力与热环境模拟重点实验室,上海201804 [3]北京民用飞机技术研究中心,北京102211

出　　处：《同济大学学报（自然科学版）》2020年第4期566-574,共9页Journal of Tongji University:Natural Science

基　　金：上海市地面交通工具风洞专业技术服务平台项目(19DZ2290400);上海市地面交通工具空气动力与热环境模拟重点实验室项目(18DZ2273300)。

摘　　要：以简化准三维模型D型钝体为研究对象,通过数值仿真手段,利用零质量合成射流器理论进行了D型体主动流动控制和主被动结合的流体控制研究发现,在尾部分离点进行射流控制时,高频射流有助于钝体减阻,减阻效果可以达到1.78%。主被动结合的锯齿和射流加强了尾迹三维流动结构,破坏了准三维模型的展向流动结构,使得减阻效果较好。采用主被动结合控制的射流为低频和高频时减阻效果为20.86%和21.20%。To explore the flow field of the vehicle and the strategies of drag reduction,this paper focuses mainly on numerical simulation of the flow structures of D-shaped bluff body.Based on the theory of zero mass synthetic jet,it studies the active flow control and the active-passive flow control of D-shaped bluff body.It is found that high frequency jet can reduce the drag of D-shaped bluff body,and the maximum drag reduction can reach 1.78%.The combination of active and passive splitter plates with tabs and synthetic jet strengthens the three-dimensional flow structure of wake,impedes the extended flow structure in the wake of quasi-three-dimensional model,and makes the drag reduction perform better.The drag reduction effect is 20.86%at low frequencies and 21.20%at high frequencies.

关 键 词：D型体 气动减阻 主动控制 合成射流 

分 类 号：U467.1[机械工程—车辆工程]