NDLI: Vortex-Induced Vibrations and Wake Structures of Isolated Plain and Straked Cylinders Mounted on a 2DOF Elastic Base

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Korkischko, Ivan Cesar, M. Freire Julio, R. Meneghini Franciss, Ricardo
Copyright Year	2010
Abstract	This paper presents experimental results concerning the response of plain and straked circular cylinders. The isolated cylinders are mounted in a two degrees of freedom elastic base. Two straked cylinders are tested and they have the same pitch p = 10d and two different heights h = 0.1d and h = 0.2d. The longitudinal and transverse amplitude responses and wake structures of plain and helically straked cylinders are compared. The wake visualization uses the stereoscopic digital particle image velocimetry (SDPIV) technique. Comparing to the plain cylinder response, the p = 10d and h = 0.1d strakes moderately reduce the maximum amplitude response, while the p = 10d and h = 0.2d strakes suppress the vortex-induced vibrations. The strake effectiveness is directly related to the strake height. The Reynolds number varies from 1000 up to 7500 in the experiments.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	635
Ending Page	640
Page Count	6
File Format	PDF
ISBN	9780791849149
DOI	10.1115/OMAE2010-20397
e-ISBN	9780791838730
Volume Number	29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 6
Conference Proceedings	ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2010-06-06
Publisher Place	Shanghai, China
Access Restriction	Subscribed
Subject Keyword	Visualization Degrees of freedom Particulate matter Reynolds number Wakes Circular cylinders Cylinders Vortex-induced vibration
Content Type	Text
Resource Type	Article

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