Response of turbulent enstrophy to sudden implementation of spanwise wall oscillation in channel flow | |
Ge MW; Jin GD(晋国栋)![]() | |
刊名 | APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
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2017-08-01 | |
卷号 | 38期号:8页码:1159-1170 |
关键词 | Turbulent Channel Flow Transport Of Enstrophy Drag Reduction Spanwise Wall Oscillation (Swo) |
ISSN号 | 0253-4827 |
DOI | 10.1007/s10483-017-2226-9 |
文献子类 | Article |
英文摘要 | The response of turbulent enstrophy to a sudden implementation of spanwise wall oscillation (SWO) is studied in a turbulent channel flow via direct numerical simulation. In the beginning of the application of SWO, a significant correlation is formed between omega (y) (') and omega (z) (') . A transient growth of turbulent enstrophy occurs, which directly enhances turbulent dissipation and drifts the turbulent flow towards a new lower-drag condition. Afterwards, the terms related to the stretching of vorticity (omega (x) , omega (y) (') , and omega (z) ), the inclination of omega (y) (') by , the turn of omega I" (z) by , and the horizontal shear of omega I" (z) by are suppressed due to the presence of SWO, leading to attenuation of the turbulent enstrophy. |
分类号 | 二类 |
WOS关键词 | Direct Numerical-simulation ; Drag-reduction Mechanisms ; Boundary-layer Control ; Surfaces ; Riblets ; Motion |
WOS研究方向 | Mathematics ; Mechanics |
语种 | 英语 |
CSCD记录号 | CSCD:6063749 |
WOS记录号 | WOS:000404749900008 |
资助机构 | National Natural Science Foundation of China(11402088 ; State Key Laboratory of Nonlinear Mechanics ; Fundamental Research Funds for the Central Universities(2107MS022) ; 51376062) |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/60901] ![]() |
专题 | 力学研究所_非线性力学国家重点实验室 |
通讯作者 | Ge MW |
推荐引用方式 GB/T 7714 | Ge MW,Jin GD. Response of turbulent enstrophy to sudden implementation of spanwise wall oscillation in channel flow[J]. APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION,2017,38(8):1159-1170. |
APA | Ge MW,&Jin GD.(2017).Response of turbulent enstrophy to sudden implementation of spanwise wall oscillation in channel flow.APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION,38(8),1159-1170. |
MLA | Ge MW,et al."Response of turbulent enstrophy to sudden implementation of spanwise wall oscillation in channel flow".APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION 38.8(2017):1159-1170. |
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