IMECH-IR  > 力学所知识产出(1956-2008)
The three dimensional flow features of interaction between two vortex streets
Ling GC(凌国灿); Xiong ZM; Ling, GC (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
Source PublicationPROCEEDINGS OF THE EIGHTH INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL 3
1998
Conference Name8th International Offshore and Polar Engineering Conference (ISOPE-98)
Conference DateMAY 24-29, 1998
Conference PlaceMONTREAL, CANADA
AbstractInteraction between two vortex streets with difference in shedding frequency, generated from instability of 2-D wake-type hows is investigated numerically. A hybrid method for solving Navier-Stokes equations combining the compact finite difference in streamwise and Fourier spectral method in spanwise is adopted. The Reynolds number in present calculation is 200. Typical characteristics of the vortex street interaction, such as vortex splitting and reconnection, formation of streamwise vortices and the connection with the spanwise vortices, the generation of spanwise velocity and "climbing" phenomenon are presented and analyzed. In the downstream a kind of large scale "spot-like" coherent structures is found which is called vortex dislocation phenomena found by Williamson and other experimentalists. Correspondingly flow field features are shown in detail. The present results show that the interaction of vortex streets plays a basic role for flow transition to turbulence.
WOS IDWOS:000075723700059
ISBN1-880653-37-0
Indexed ByCPCI-S
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58974
Collection力学所知识产出(1956-2008)
Corresponding AuthorLing, GC (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Ling GC,Xiong ZM,Ling, GC . The three dimensional flow features of interaction between two vortex streets[C]. CUPERTINO, PO BOX 189, CUPERTINO, CA 95015-0189 USA:INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS,1998.
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