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Photographic evidence of the formation and growth of vorticity behind plates accelerated from rest in still air

Published online by Cambridge University Press:  28 March 2006

D. Pierce
D. Pierce
Affiliation:
Aerodynamics Department, Royal Aircraft Establishment, Farnborough, Hampshire, England
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Abstract

The shedding of vorticity from the edges of a plate, which is accelerated normal to itself from rest in still air, is investigated experimentally by means of a new flow-visualization technique using spark-lighted shadowgraphs and heated air, benzene or other vapours to introduce sufficient changes in density along the surface of discontinuity.

The photographs show small-scale undulations and the formation of a number of centres of vorticity along the well known big-scale vortex sheets which roll up along their edges.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 11 , Issue 3 , November 1961 , pp. 460 - 464
Copyright
© 1961 Cambridge University Press

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Footnotes

Crown copyright reserved.

References

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