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Numerical simulation of force and wake models of an oscillating cylinder

Numerical simulation of force and wake models of an oscillating cylinder
Numerical simulation of force and wake models of an oscillating cylinder
The turbulent flow behind a circular cylinder subjected to forced oscillation is numerically studied at a Reynolds number of 5500 by using three-dimensional Large Eddy Simulations (3-D LES) technique with a Smagorinsky type model. The filtered equations are discretised using the finite volume method with an O-type structured grid and a second-order accurate method in both time and space. Firstly, the main wake parameters of a stationary cylinder are examined and compared in the different grid resolutions. Secondly, a transversely oscillating cylinder with a constant amplitude in a uniform flow is investigated. The cylinder oscillation frequency ranges between 0.75 and 0.95 of the natural Kármán frequency, and the excitation amplitude is moderate, 50% of the cylinder diameter. In the present study, the flow characteristics of an oscillating cylinder are numerically examined and the corresponding wake modes are captured firstly in 3-D LES at Re=5500. A transition between different wake modes is firstly investigated in a set of numerical simulations.
Forced oscillation, vortex-induced vibration, wake moderesponse, bluff-body wake, 3-D large eddy simulations, turbulent flow
0889-9746
216-225
Kim, Sunghan
0ed0c2b3-5e5c-409b-83f9-93a5b9ac9c06
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Chen, Zhi-Min
e4f81e6e-5304-4fd6-afb2-350ec8d1e90f
Kim, Sunghan
0ed0c2b3-5e5c-409b-83f9-93a5b9ac9c06
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Chen, Zhi-Min
e4f81e6e-5304-4fd6-afb2-350ec8d1e90f

Kim, Sunghan, Wilson, P.A. and Chen, Zhi-Min (2014) Numerical simulation of force and wake models of an oscillating cylinder. Journal of Fluids and Structures, 44, 216-225. (doi:10.1016/j.jfluidstructs.2013.11.010).

Record type: Article

Abstract

The turbulent flow behind a circular cylinder subjected to forced oscillation is numerically studied at a Reynolds number of 5500 by using three-dimensional Large Eddy Simulations (3-D LES) technique with a Smagorinsky type model. The filtered equations are discretised using the finite volume method with an O-type structured grid and a second-order accurate method in both time and space. Firstly, the main wake parameters of a stationary cylinder are examined and compared in the different grid resolutions. Secondly, a transversely oscillating cylinder with a constant amplitude in a uniform flow is investigated. The cylinder oscillation frequency ranges between 0.75 and 0.95 of the natural Kármán frequency, and the excitation amplitude is moderate, 50% of the cylinder diameter. In the present study, the flow characteristics of an oscillating cylinder are numerically examined and the corresponding wake modes are captured firstly in 3-D LES at Re=5500. A transition between different wake modes is firstly investigated in a set of numerical simulations.

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More information

e-pub ahead of print date: 25 November 2013
Published date: January 2014
Keywords: Forced oscillation, vortex-induced vibration, wake moderesponse, bluff-body wake, 3-D large eddy simulations, turbulent flow
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 359690
URI: http://eprints.soton.ac.uk/id/eprint/359690
ISSN: 0889-9746
PURE UUID: 3723f94a-d200-42ec-abac-23b6304fdef4
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 08 Nov 2013 13:38
Last modified: 09 Jan 2022 02:34

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Contributors

Author: Sunghan Kim
Author: P.A. Wilson ORCID iD
Author: Zhi-Min Chen

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