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Published December 1, 1973 | public
Journal Article Open

Viscous Effects in the Inception of Cavitation on Axisymmetric Bodies


Cavitation inception and development on two axisymmetric bodies was studied with the aid of a Schlieren flow visualization method developed for that purpose. Both bodies were found to exhibit a laminar boundary layer separation; cavitation inception was observed to occur within this region of separated flow. The incipient cavitation index was found to be closely correlated with the magnitude of the pressure coefficient at the location of flow separation on one of the bodies. There is also experimental evidence that events at the site of turbulent reattachment of the separated flow may also greatly influence cavitation inception.

Additional Information

Contributed by the Fluids Engineering Division and presented at the Applied Mechanics and Fluids Egnineering Conference, Atlanta, GA, June 20-22, 1973, of the American Society of Mechanical Engineers. Manuscript received at ASME Headquarters, March 21, 1973. Paper No. FE-73-26. This research was partially sponsored by the Naval Ship Systems Command General Hydromechanics Research Program administered by the Naval Ship Research and Development, Center under Contract N00014-67-A-0094-0023 and by a grant from the Sloan Foundation. This assistance is gratefully acknowledged. We also thank the staff of Caltech Guggenheim Aero and Hydrodynamics Laboratories for their generous help and, in addition, the useful suggestions by Professors Holl aud Parkin in preparing the manuscript.


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