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Large eddy simulation of vortex shedding from cubic obstacle

Large eddy simulation of vortex shedding from cubic obstacle
Large eddy simulation of vortex shedding from cubic obstacle
This paper discusses the large eddy simulation technique as applied to vortex shedding from a cubic obstacle placed in a turbulent wind environment and presents results from a recent large-scale computation of this flow. The simulation was sufficiently resolved to capture the dynamics of the conical vortices on the roof of the obstacle and to predict the roof pressure footprint in good agreement with the experimental findings. The3D visualizations of the vortex shedding and an analysis of the mean flow topology are also presented. The computations used a grid of ~107 nodes, and they were performed on a Cray T3E parallel machine. The turbulent inflow was taken from a separate precursor simulation targeted so that the obstacle represents a building placed in an urban wind environment
0893-1321
113-121
Thomas, T.G.
bccfa8da-6c8b-4eec-b593-00587d3ce3cc
Williams, J.J.R.
00bddc69-411c-4267-98d9-0503b837ccda
Thomas, T.G.
bccfa8da-6c8b-4eec-b593-00587d3ce3cc
Williams, J.J.R.
00bddc69-411c-4267-98d9-0503b837ccda

Thomas, T.G. and Williams, J.J.R. (1999) Large eddy simulation of vortex shedding from cubic obstacle. Journal of Aerospace Engineering, 12 (4), 113-121. (doi:10.1061/(ASCE)0893-1321(1999)12:4(113)).

Record type: Article

Abstract

This paper discusses the large eddy simulation technique as applied to vortex shedding from a cubic obstacle placed in a turbulent wind environment and presents results from a recent large-scale computation of this flow. The simulation was sufficiently resolved to capture the dynamics of the conical vortices on the roof of the obstacle and to predict the roof pressure footprint in good agreement with the experimental findings. The3D visualizations of the vortex shedding and an analysis of the mean flow topology are also presented. The computations used a grid of ~107 nodes, and they were performed on a Cray T3E parallel machine. The turbulent inflow was taken from a separate precursor simulation targeted so that the obstacle represents a building placed in an urban wind environment

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Published date: October 1999

Identifiers

Local EPrints ID: 72094
URI: http://eprints.soton.ac.uk/id/eprint/72094
ISSN: 0893-1321
PURE UUID: 4ec24907-1f04-41d7-b9fe-72f7ab1cc9c2

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Date deposited: 20 Jan 2010
Last modified: 13 Mar 2024 20:59

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Contributors

Author: T.G. Thomas
Author: J.J.R. Williams

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