IMECH-IR  > 流固耦合系统力学重点实验室
Flow around a Circular Cylinder with Radial Disturbances at a Low Reynolds Number
Lin LM(林黎明); Zhong XF(钟兴福); Wu YX(吴应湘)
Source PublicationProceedings of the 23rd (2013) International Offshore and Polar Engineering Conference
Conference Name23rd International Offshore and Polar Engineering Conference, ISOPE-2013
Conference DateJUN 30-JUL 05, 2013
Conference PlaceAnchorage, Alaska, USA
AbstractBased on the idea of geometric disturbance in suppressing vortex induced vibration (VIV), numerical simulations are carried out for a flow past a fixed circular cylinder with different wavy disturbances. Two kinds of disturbances, harmony and cone, are considered. Different wavelengths and wave heights are investigated at a Reynolds number of 100. The introduction of disturbance would increase the drag but reduce the lift for most cases. The local minimum of fluid forces exists, presently, at the non-dimensional wavelength of 6. The typical Kármán vortex is gradually disturbed with the increasing strength of disturbance. Different flow patterns are identified and discussed, such as Ω-type vortex and the complete suppression of vortex shedding. Characteristics of effect of disturbance on the generation and distribution of surface vorticity are presented in detail.
KeywordRadial Disturbance Circular Cylinder Vortex-induced Vibration Suppression Riser
Indexed ByEI
Document Type会议论文
Corresponding AuthorLin LM(林黎明)
Recommended Citation
GB/T 7714
Lin LM,Zhong XF,Wu YX. Flow around a Circular Cylinder with Radial Disturbances at a Low Reynolds Number[C]Proceedings of the 23rd (2013) International Offshore and Polar Engineering Conference,2013:387-394.
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