Published August 1, 1968 | public
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Wave Patterns on the Surface of Hydrodynamic Cavities

Brennen, C.
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Abstract

In experiments on cavities behind various axisymmetric headforms, a pattern of waves or ripples with crests parallel to the separation line was observed on the cavity surface just downstream of separation. A theoretical analysis suggests that this pattern results from amplified instabilities in the separated laminar boundary layer on the cavity surface.

Additional Information

National Physical Laboratory. Ship Division. Ship Report 121. This work is part of the research programme of the Ship Division of the National Physical Laboratory. The author wishes to thank Mr. S. Grant for assistance in carrying out the experimental investigations, Dr. A. Davey (Aerodynamics Division) for extensive aid in the computer program for the solution of the eigenvalue problem and Dr. G. E. Gadd for valuable discussions on the subject.

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August 21, 2023
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