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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 871Characteristics for a Flow Past a Circular...

Characteristics for a Flow Past a Circular Cylinder with Two Types of Radial Disturbances at Re=100

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Abstract:

For better understanding physical mechanism of radial disturbances, previously proposed to disturb the wake flow and vortex-induced vibration of risers, numerical simulations are carried out for the flow around the fixed cylinder with such disturbances at a Reynolds number of 100. After introducing disturbances, specific distributions of flow and vertical vorticity near cylinder surfaces are identified and related to different vortex patterns. The spanwise variation of free shear layers is discussed and physically explained. Different characteristics for the pressure on cylinder surfaces, frequency of vortex shedding and time history of lift are also analyzed and presented in detail.

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Periodical:

Advanced Materials Research (Volume 871)

Pages:

107-114

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.871.107

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Online since:

December 2013

Authors:

Li Ming Lin*, Xing Fu Zhong, Ying Xiang Wu

Keywords:

Circular Cylinder, Radial Disturbance, Riser, Suppression, Vortex-Induced Vibration (VIV)

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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