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Similarities Between Two-Dimensional and Axisymmetric Vortex Wakes

Published online by Cambridge University Press:  07 June 2016

J E L Simmons
J E L Simmons*
Affiliation:
Department of Engineering Science, University of Durham
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Summary

This paper presents results of an investigation of the wake flow of a series of two-dimensional bluff bodies with different boundary-layer separation angles. These results are compared with the results of an earlier investigation of a similar series of axisymmetric bodies. It is found that when the same length scales characterising the wakes that were proposed for the axisymmetric case are used in the current investigation, then there is good agreement between the two cases in the variation of the length scales with boundary-layer separation angle. The universal Strouhal number previously proposed for axisymmetric bodies is derived for the two-dimensional bodies under investigation and is found to remain a constant for the different bodies, but at a different numerical value from that found for the axisymmetric bodies.

Type
Research Article
Information
Aeronautical Quarterly , Volume 28 , Issue 1 , February 1977 , pp. 15 - 20
Copyright
Copyright © Royal Aeronautical Society. 1977

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