| D型体主被动结合流动控制研究 |
| |
| 引用本文： | 杨志刚,韩业恺,李启良,单希壮.D型体主被动结合流动控制研究[J].同济大学学报(自然科学版),2020,48(4):566-574. |
| |
| 作者姓名： | 杨志刚 韩业恺 李启良 单希壮 |
| |
| 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 |
| |
| 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） |
| |
| 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%。
|
| 关 键 词： | D型体 气动减阻 主动控制 合成射流 |
| 收稿时间： | 2019/5/14 0:00:00 |
| 修稿时间： | 2020/2/25 0:00:00 |
Flow Control of Active and Passive Combination of D-Shaped Bluff Body |
| |
| YANG Zhigang,HAN Yekai,LI Qiliang,SHAN Xizhuang.Flow Control of Active and Passive Combination of D-Shaped Bluff Body[J].Journal of Tongji University(Natural Science),2020,48(4):566-574. |
| |
| Authors: | YANG Zhigang HAN Yekai LI Qiliang SHAN Xizhuang |
| |
| 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 |
| |
| 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. |
| |
| Keywords: | D-shaped bluff body drag reduction active control synthetic jet |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《同济大学学报(自然科学版)》浏览原始摘要信息 |
|
点击此处可从《同济大学学报(自然科学版)》下载全文 |
|
