DOI: 10.11908/j.issn.0253-374x.19185

作者:

作者单位: 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


作者简介: 杨志刚（1961—)，男，教授，工学博士，主要研究方向为汽车空气动力学、气动声学、热管理、高速列车空气 动力学、地效飞行器空气动力学。E-mail: zhigang.yang@sawtc.com


通讯作者: 李启良（1980—)，男，副研究员，博士生导师，工学博士，主要研究方向为汽车启动噪声。

中图分类号: U467.1


基金项目: 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）




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

Affiliation: 1.Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China;2.Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University,Shanghai 201804, China;3.Beijing Aeronautical Science and Technology Research Institute, Beijing 102211, China


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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%。



Abstract: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.





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