Study on'exact'coherent structures in turbulent flows
Study on'exact'coherent structures in turbulent flows
批准号:
22560065
负责人:
NAGATA Masato
金额:
$2.83万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2010
资助国家:
日本
项目状态:
已结题
起止时间:
2010 至 2012
中文摘要
从平面Couette流的精确相干解出发,利用同伦延拓的方法,得到了滑动Couette流、管流和平面Poiseuille流的精确相干解。研究发现,镜面对称的空间结构在这些流动中普遍存在,并在层流向湍流转变过程中起着重要的作用。
英文摘要
Exact coherent solutions in sliding Couette flow, pipe flow and plane Poiseuille flow are obtained by a method of homotopy continuation from the exact coherent solution in plane Couette flow. It is found that a mirror-symmetric spatial structure is commonly observed in these flows and plays an important role in transition from laminar flow to turbulence.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
[OsamuWATANABE, BopitBUBPHACHOT, Akihiro MATSUDA,Taisuke AKIYAMA, K. Deguchi and M. Nagata]
通讯作者:
K. Deguchi and M. Nagata
正方形ダクト内流れにおける定常進行波解
方形管道中流动的稳定行波解
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
[沖野真也, 永田雅人]
通讯作者:
永田雅人
DOI:
10.1017/jfm.2011.103
发表时间:
2011-04
期刊:
Journal of Fluid Mechanics
影响因子:
3.7
作者:
[K. Deguchi;M. Nagata]
通讯作者:
K. Deguchi;M. Nagata
A new nonlinear vortex state in square-duct flow
方管流中一种新的非线性涡流状态
DOI:
--
发表时间:
2010
期刊:
Journal of Fluid Mechanics
影响因子:
3.7
作者:
[S. Okino, M. Nagata, H. Wedin and A. Bottaro]
通讯作者:
H. Wedin and A. Bottaro
Mirror symmetric travelling wave solutions in a sliding Couette flow and plane Couette flow
滑动库埃特流和平面库埃特流中的镜像对称行波解
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[D.Aoto, E.Ishiwata, K.Abe, 軽野義行, M. Nagata and K. Deguchi, 矢久保考介, K. Deguchi and M. Nagata]
通讯作者:
K. Deguchi and M. Nagata
共 22 条
Study on the relation between the multipleness of the solutions of the Navier-Stokes equations and the phenomena in turbulence transition
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批准号:18360049
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$11.37万
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财政年份:2006
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负责人:NAGATA Masato
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依托单位:
Theoretical investigation on laminar-turbulent transition of flows through a rectangular duct
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批准号:15560052
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$2.37万
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财政年份:2003
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负责人:NAGATA Masato
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依托单位:
Structures of nonlinear disturbances arising from shear flow instabilities
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批准号:12650062
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$2.24万
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财政年份:2000
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负责人:NAGATA Masato
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依托单位:
海外基金