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Vortex shedding and evolution induced by a solitary wave propagating over a submerged cylindrical structure
Zarruk Serrano, GA and Cowen, EA and Wu, TR and Liu, PL-F, Vortex shedding and evolution induced by a solitary wave propagating over a submerged cylindrical structure, Journal of Fluids and Structures, 52 pp. 181-198. ISSN 0889-9746 (2015) [Refereed Article]
Copyright 2014 Elsevier Ltd.
The shedding and evolution of the vortical structures generated by a solitary wave propagating over a submerged cylindrical structure are investigated experimentally and numerically. The cylindrical structure consists of two concentric cylinders and represents a simplified model for an offshore submerged intake structure typically used in coastal power plants. Flow visualization by dye injection is used to identify the dominant vortical structures near the structure. The flow visualization results show an unexpected flow reversal that causes shedding of secondary vortical structures. The experimental results are used to check a three-dimensional volume of fluid-large eddy simulation (VOF-LES) numerical model. The VOF-LES model is then used to further study the flow structure. A total of six dominant vortical structures generated by the wave motion are identified, followed by two more generated by the flow reversal. In summary, this paper provides the vorticity evolution for a complex fluid-structure interaction problem and a three-dimensional numerical simulation tool has also been validated, which can be extended to study more complex geometries and wave conditions.
|Item Type:||Refereed Article|
|Keywords:||offshore intake, submerged cylindrical structure, solitary wave, flow visualization, vortex shedding, fluid-structure interaction, VOF-LES, numerical simulation|
|Research Group:||Fluid mechanics and thermal engineering|
|Research Field:||Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics)|
|Objective Division:||Expanding Knowledge|
|Objective Group:||Expanding knowledge|
|Objective Field:||Expanding knowledge in engineering|
|UTAS Author:||Zarruk Serrano, GA (Dr Gustavo Zarruk Serrano)|
|Web of Science® Times Cited:||17|
|Deposited By:||Australian Maritime College|
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