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Large eddy simulation of flow past a stationary and controlled oscillating circular cylinder at RE=5500

Large eddy simulation of flow past a stationary and controlled oscillating circular cylinder at RE=5500
Large eddy simulation of flow past a stationary and controlled oscillating circular cylinder at RE=5500
Vortex shedding from a stationary cylinder and transversely oscillating circular cylinder in a uniform flow at a Reynolds number of 5500 is numerically studied by three-dimensional Large Eddy Simulation (LES). 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 for 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 Karman frequency, and the excitation amplitude is 50% of the cylinder diameter. Comparisons with the available experimental data indicate that the present study has properly predicted the flow statistics of the cylinder wake for both the fixed and oscillating cylinder case, and numerically captured the vortex switching phenomenon, which is characterized by changes in forces and wake mode of shedding observed in the previous experiments at high values of Reynolds number.
Kim, Sunghan
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Wilson, Philip A.
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Chen, Zhimin
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Kim, Sunghan
0ed0c2b3-5e5c-409b-83f9-93a5b9ac9c06
Wilson, Philip A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Chen, Zhimin
e4f81e6e-5304-4fd6-afb2-350ec8d1e90f

Kim, Sunghan, Wilson, Philip A. and Chen, Zhimin (2013) Large eddy simulation of flow past a stationary and controlled oscillating circular cylinder at RE=5500. OMAE 2013, Nantes, France. 08 - 13 Jun 2013. 8 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Vortex shedding from a stationary cylinder and transversely oscillating circular cylinder in a uniform flow at a Reynolds number of 5500 is numerically studied by three-dimensional Large Eddy Simulation (LES). 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 for 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 Karman frequency, and the excitation amplitude is 50% of the cylinder diameter. Comparisons with the available experimental data indicate that the present study has properly predicted the flow statistics of the cylinder wake for both the fixed and oscillating cylinder case, and numerically captured the vortex switching phenomenon, which is characterized by changes in forces and wake mode of shedding observed in the previous experiments at high values of Reynolds number.

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More information

Published date: 12 June 2013
Venue - Dates: OMAE 2013, Nantes, France, 2013-06-08 - 2013-06-13
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 353128
URI: http://eprints.soton.ac.uk/id/eprint/353128
PURE UUID: 7e810585-39af-43aa-bb97-027b99bf2192
ORCID for Philip A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 03 Jun 2013 09:24
Last modified: 09 Jan 2022 02:34

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Contributors

Author: Sunghan Kim
Author: Zhimin Chen

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