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Effect of spanwise discretisation on turbulent flow past a circular cylinder

Effect of spanwise discretisation on turbulent flow past a circular cylinder
Effect of spanwise discretisation on turbulent flow past a circular cylinder
The effect of the spanwise discretisation on numerical calculations of the turbulent flow around a circular cylinder is systematically assessed at a subcritical Reynolds number of 10000 in the frame of three-dimensional large-eddy simulation. The eddy-viscosity k-equation subgrid scale model is implemented to evaluate unsteady turbulent flow field. Large-eddy simulation is known to be a reliable method to resolve such a challenging flow field, however, the high computational efforts restrict to low Reynolds number flow or two-dimensional calculations. Therefore, minimum spatial density in the spanwise direction or cylinder axis direction needs to be carefully evaluated in order to reduce high computational resources. In the present study, the influence of the spanwise resolutions to satisfactorily represent three-dimensional complex flow features is discussed in detail and minimum spatial density for high Reynolds flow is suggested.
Turbulence, span wise, cylinder
1479-8751
69-76
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 (2016) Effect of spanwise discretisation on turbulent flow past a circular cylinder. Transactions of The Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering, 158 (A1), 69-76. (doi:10.3940/rina.ijme.2016.a1.349tn).

Record type: Article

Abstract

The effect of the spanwise discretisation on numerical calculations of the turbulent flow around a circular cylinder is systematically assessed at a subcritical Reynolds number of 10000 in the frame of three-dimensional large-eddy simulation. The eddy-viscosity k-equation subgrid scale model is implemented to evaluate unsteady turbulent flow field. Large-eddy simulation is known to be a reliable method to resolve such a challenging flow field, however, the high computational efforts restrict to low Reynolds number flow or two-dimensional calculations. Therefore, minimum spatial density in the spanwise direction or cylinder axis direction needs to be carefully evaluated in order to reduce high computational resources. In the present study, the influence of the spanwise resolutions to satisfactorily represent three-dimensional complex flow features is discussed in detail and minimum spatial density for high Reynolds flow is suggested.

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Accepted/In Press date: 22 July 2015
Published date: 16 March 2016
Keywords: Turbulence, span wise, cylinder
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 379549
URI: http://eprints.soton.ac.uk/id/eprint/379549
ISSN: 1479-8751
PURE UUID: ad82c940-6cb8-48b1-90de-b27a896b5a29
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

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Date deposited: 05 Aug 2015 14:20
Last modified: 10 Jan 2022 02:32

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Contributors

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

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