Quantitative investigation of the transition process in Taylor-Couette flow

Quantitative investigation of the transition process in Taylor-Couette flow
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Taylor-Couette 流转变过程的定量研究

DOI:
10.1007/s12206-012-1253-2
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发表时间:
2013-03
影响因子:
1.6
通讯作者:
Hyoungbum Kim
Hyoungbum Kim
中科院分区:
工程技术4区
文献类型:
--
作者:
Xincheng Tu;Dong Liu;Hyoungbum Kim

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通过测量两同心圆柱间环形间隙流动区域的瞬时速度矢量场,对圆柱Couette流向Taylor涡流态的转变过程进行了实验研究。采用适当的正交分解方法、涡量计算和频率分析等方法,对转捩过程中的瞬时速度场进行分析,以确定转捩过程中的流动特性。从结果来看,动能和相应的重建速度场能够检测到的转捩过程的开始和流动结构的交替。通过对瞬时速度场的分析,揭示了转捩过程中旋涡流动的不稳定性和振荡性。该结果可作为从速度测量方法中识别Taylor-Couette流动临界雷诺数的一种手段。
The transition process from circular Couette flow to Taylor vortex flow regime was experimentally investigated by measuring the instantaneous velocity vector fields at the annular gap flow region between two concentric cylinders. The proper orthogonal decomposition method, vorticity calculation, and frequency analysis were applied in order to analyze the instantaneous velocity fields to identify the flow characteristics during the transition process. From the results, the kinetic energy and corresponding reconstructed velocity fields were able to detect the onset of the transition process and the alternation of the flow structure. The intermittency and oscillation of the vortex flows during the transition process were also revealed from the analysis of the instantaneous velocity fields. The results can be a measure of identifying the critical Reynolds number of the Taylor-Couette flow from a velocity measurement method.
DOI: 10.1063/1.2008999
发表时间: 2005-09
期刊: Physics of Fluids
影响因子: 4.6
作者:
B. Dubrulle;O. Dauchot;F. Daviaud;P. Longaretti;D. Richard;J. Zahn
通讯作者: B. Dubrulle;O. Dauchot;F. Daviaud;P. Longaretti;D. Richard;J. Zahn
DOI: 10.1007/978-3-540-72604-3_112
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期刊: --
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通讯作者: B. Eckhardt;S. Grossmann;D. Lohse
DOI: 10.1017/s0022112086002513
发表时间: 1986-03-01
影响因子: 3.7
作者:
ANDERECK, CD;LIU, SS;SWINNEY, HL
通讯作者: SWINNEY, HL
影响因子: --
作者:
Taylor, GI
通讯作者: Taylor, GI
DOI: 10.1017/s0022112076000098
发表时间: 1976-05
影响因子: 3.7
作者:
J. A. Cole
通讯作者: J. A. Cole