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Some Techniques for Extending the Application of the Discrete Vortex Method of Flow Simulation

Published online by Cambridge University Press:  07 June 2016

I.G. Bromilow  and
R.R. Clements
I.G. Bromilow
Affiliation:
Department of Engineering Mathematics, University of Bristol
R.R. Clements
Affiliation:
Department of Engineering Mathematics, University of Bristol
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Summary

Simulations of vortex sheet dynamics by the discrete vortex method have often shown a growing randomness of the discrete vortices. This paper describes two techniques which attempt to mitigate this tendency whilst preserving the overall structure of the vortex sheet. Clusters of vortices near the points of concentration are amalgamated into a single equivalent vortex and a process of repeated rediscretization of the remaining part of the sheet maintains the integrity of its representation. Use of these techniques allow the flow model to be followed beyond previous expectations, without undue randomisation of the vortex positions. The effects of using these techniques on the overall vortex sheet development are fully investigated in order to validate their use in future investigations.

Type
Research Article
Information
Aeronautical Quarterly , Volume 33 , Issue 1 , February 1982 , pp. 73 - 89
Copyright
Copyright © Royal Aeronautical Society. 1982

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