D型体主被动结合流动控制研究
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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.

    参考文献
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    [9] Martín-Alcántara A, SANMIGUEL-ROJAS E , GUTIéRREZ-MONTES C, et al. Drag reduction induced by the addition of a multi-cavity at the base of a bluff body[J]. Journal of Fluids & Structures, 2014, 48:347.
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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

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历史
  • 收稿日期:2019-05-14
  • 最后修改日期:2020-02-25
  • 录用日期:2020-02-11
  • 在线发布日期: 2020-04-24
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