Effects of a higher Reynolds number and introduced perforation on flows past the conic cylinder
Lin LM(林黎明) ; Zhong XF(钟兴福) ; Wu YX(吴应湘)
Source Publication Proceedings of the International Offshore and Polar Engineering Conference
Conference Name 25th International Ocean and Polar Engineering Conference, ISOPE 2015
Conference Date June 21, 2015 - June 26, 2015
Conference Place Kona, Big Island, HI, United states
Abstract Through numerical simulations, effects of a higher Reynolds number (105) and the introduction of perforation at a lower Reynolds number (102) on flows past a circular cylinder with the conic disturbance are investigated. Particularly, circular holes are located on and uniformly distributed around the peak of the conic shroud. Results have been shown that the higher Reynolds number of 105has little effect on qualitative variations of the drag and lift coefficients and the frequency of vortex shedding in most cases, which are almost similar to those at lower Reynolds numbers, as well as the introduced perforation. Nevertheless, there are still several exceptional cases with different hydrodynamic parameters resulted from the introduction of perforation. And different disturbance regimes and vortex patterns in the near wake for these cases are identified and presented in detail. Copyright © 2015 by the International Society of Offshore and Polar Engineers (ISOPE).
Keyword Circular Holes
Drag And Lift Coefficients
Vortex Induced Vibration
Indexed By EI
Document Type 会议论文
Recommended Citation GB/T 7714
Lin LM,Zhong XF,Wu YX. Effects of a higher Reynolds number and introduced perforation on flows past the conic cylinder[C]Proceedings of the International Offshore and Polar Engineering Conference,2015.
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