A direct numerical simulation study of coherent oscillation effects of swirling flows
A direct numerical simulation study of coherent oscillation effects of swirling flows
复制标题
旋流相干振荡效应的直接数值模拟研究
DOI:
10.1016/j.fuel.2010.06.037
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发表时间:
2010-12
期刊:
影响因子:
7.4
通讯作者:
Chen, Song
中科院分区:
文献类型:
--
作者:
Gui, Nan;Cen, Kefa;Fan, JianRen;Chen, Song
In this study, we carried out a direct numerical simulation of swirling jets to investigate the temporal characteristics of coherent structures related to the vortex breakdown. The type of coherent motion of oscillation, as a temporal characteristic of vortex breakdown, is observed through the analysis of correlation functions. It indicates that the vortex breakdown is accompanied with the resonance of fluctuations of flow velocity, pressure, vortices and etc. Moreover, it is found that the coherent oscillation occurs only for the swirling flows with a high level of swirl (larger than the critical value) when the bubble vortex breakdown takes place, and only at relatively moderate Reynolds numbers transiting from laminar to turbulence.
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影响因子:
4.1
作者:
J. Williamson
通讯作者:
J. Williamson
DOI:
10.1103/physreve.72.016311
发表时间:
2004-10
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
J. Ruppert-Felsot;O. Praud;E. Sharon;H. Swinney
通讯作者:
J. Ruppert-Felsot;O. Praud;E. Sharon;H. Swinney
影响因子:
9.6
作者:
M. Escudier
通讯作者:
M. Escudier
影响因子:
7.4
作者:
M. Gu;Mingchuan Zhang;W. Fan;Lei Wang;Fengguo Tian
通讯作者:
M. Gu;Mingchuan Zhang;W. Fan;Lei Wang;Fengguo Tian
影响因子:
3.7
作者:
J. Harvey
通讯作者:
J. Harvey