Effects of roughness elements on bypass transition induced by a circular cylinder wake
Effects of roughness elements on bypass transition induced by a circular cylinder wake
复制标题
粗糙度元素对圆柱尾流引起的旁路转变的影响
DOI:
10.1007/s12650-010-0063-9
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发表时间:
2011-02
影响因子:
1.7
通讯作者:
Pan C
中科院分区:
文献类型:
--
作者:
Wang J J;Zhang C;Pan C
AbstractThe bypass transition of flat-plate boundary layer induced by a circular cylinder wake under the influence of roughness elements is experimentally investigated. The hydrogen-bubble visualization results show that the boundary layer separation occurs upstream of the roughness, and the separated shear layer is incised by roughness to different extent, resulting in different kinds of secondary vortices formed immediately downstream of the roughness. During the evolution of the secondary vortex, two types of instabilities are observed, which are denoted as large- and small-scale instabilities, respectively, according to different spatial scale of the hairpin vortices formed afterward. A merging process of hairpin vortices is also observed when the secondary vortices undergo the small-scale instability, and a potential new transition control strategy based on the present observation is proposed.Graphical Abstract
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影响因子:
4.6
作者:
J. Fransson;L. Brandt;A. Talamelli;C. Cossu
通讯作者:
J. Fransson;L. Brandt;A. Talamelli;C. Cossu
影响因子:
4.6
作者:
J. Fransson;L. Brandt;A. Talamelli;C. Cossu
通讯作者:
J. Fransson;L. Brandt;A. Talamelli;C. Cossu
影响因子:
3.7
作者:
Feng, Li Hao;Pan, Chong;Wang, Jin Jun;Zhang, Pan Feng
通讯作者:
Zhang, Pan Feng
DOI:
10.1007/978-1-4899-5579-1_1
发表时间:
1969
期刊:
--
影响因子:
--
作者:
M. Morkovin
通讯作者:
M. Morkovin
影响因子:
4.6
作者:
E. White
通讯作者:
E. White