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Vortex shedding from slender cones at low Reynolds numbers

Published online by Cambridge University Press:  29 March 2006

M. Gaster
M. Gaster
Affiliation:
National Physical Laboratory, Teddington, Middlesex
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Abstract

Water-tunnel experiments on two cones of taper ratio 36:1 and 18:1 have shown that the frequency of vortex shedding is controlled by the local diameter and has a value which is slightly lower than that on a parallel cylinder of the same size. The shedding process is modulated by a low-frequency oscillation which has a frequency dependent only on U2/v and is independent of any physical dimension of the model. A mathematical analogue of the wake, which helps to explain these features of the flow, has been constructed. The pattern of vortices in the wake of a cone suggested by this model is in reasonable agreement with the photographic evidence.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 38 , Issue 3 , 18 September 1969 , pp. 565 - 576
Copyright
© 1969 Cambridge University Press

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References

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