槽道湍流中拟涡能输运对反向控制的瞬时响应

葛铭纬; 许春晓; 黄伟希; 崔桂香

doi:10.3879/j.issn.1000-0887.2013.02.004

槽道湍流中拟涡能输运对反向控制的瞬时响应

doi: 10.3879/j.issn.1000-0887.2013.02.004

¹AML, 清华大学工程力学系, 北京 100084;²国电联合动力技术有限公司, 北京 100039

基金项目: 国家自然科学基金资助项目(10925210；11002081；11132005)

详细信息

作者简介:
葛铭纬(1984—),男,山东人,博士生(E-mail: gemingwei@gdupc.cn);许春晓,教授,博士(通讯作者.Tel: +86-10-62780576;E-mail: xucx@tsinghua.edu.cn).

中图分类号: O357.5
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出版历程
- 收稿日期: 2012-02-01
- 修回日期: 2012-04-21
- 刊出日期: 2013-02-15

Transient Response of Enstrophy Transport to Opposition Control in Turbulent Channel Flow

¹AML, Department of Engineering Mechanics, Tsinghua University,Beijing 100084, P.R.China;²Guodian United Power Technology Company Limited, Beijing 100039, P.R.China

摘要

摘要: 利用直接数值模拟研究了槽道湍流中脉动拟涡能输运对反向控制的瞬时响应．发现流向和展向拟涡能的衰减首先由拉伸产生项的抑制引起，而法向拟涡能的减小是因为控制阻碍了平均剪切的倾斜．在控制的初始阶段，流向拟涡能的演化远远落后于其它两个分量的变化．法向涡量快速单调减小，并对其它两个分量的减弱起到了重要作用．
- 拟涡能 /
- 槽道湍流 /
- 反向控制 /
- 直接数值模拟
Abstract: The transient response of turbulent enstrophy transport to opposition control in turbulent channel flow was studied with the aid of direct numerical simulation. It is found that the streamwise and spanwise enstrophy are suppressed by the attenuation of the stretching terms at first, while the vertical enstrophy is reduced by inhibiting the tilting of mean shear. During the initial period of the control, the streamwise enstrophy evolves much slower than the other two components. The vertical vorticity component exhibits a rapid monotonic decrease and also plays an important role in the attenuation of the other two components.
- enstrophy transport /
- opposition control /
- turbulent channel flow /
- direct numerical simulation

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参考文献(13)

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[9]	Ge M W, Xu C X, Cui G X.Transient response of Reynolds stress transport to opposition control in turbulent channel flow[J]. Sci China,2011, 54(2): 320-328.
[10]	Xu C, Zhang Z, Nieuwstadt F T M, Toonder den J M J.Origin of high kurtosis levels in the viscous sublayer: direct numerical simulation and experiment[J]. Phys Fluids,1996, 8(7): 1938-1944.
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槽道湍流中拟涡能输运对反向控制的瞬时响应

doi: 10.3879/j.issn.1000-0887.2013.02.004

作者简介:
葛铭纬(1984—),男,山东人,博士生(E-mail: gemingwei@gdupc.cn);许春晓,教授,博士(通讯作者.Tel: +86-10-62780576;E-mail: xucx@tsinghua.edu.cn).

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Transient Response of Enstrophy Transport to Opposition Control in Turbulent Channel Flow

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槽道湍流中拟涡能输运对反向控制的瞬时响应

doi: 10.3879/j.issn.1000-0887.2013.02.004

作者简介: 葛铭纬(1984—),男,山东人,博士生(E-mail: gemingwei@gdupc.cn);许春晓,教授,博士(通讯作者.Tel: +86-10-62780576;E-mail: xucx@tsinghua.edu.cn).

计量

出版历程

Transient Response of Enstrophy Transport to Opposition Control in Turbulent Channel Flow

计量

出版历程

目录

作者简介:
葛铭纬(1984—),男,山东人,博士生(E-mail: gemingwei@gdupc.cn);许春晓,教授,博士(通讯作者.Tel: +86-10-62780576;E-mail: xucx@tsinghua.edu.cn).