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Interaction of single travelling bubbles with the boundary layer and attached cavitation

Published online by Cambridge University Press:  26 April 2006

Chih-Yang Li  and
Steven L. Ceccio
Chih-Yang Li
Affiliation:
Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109, USA
Steven L. Ceccio
Affiliation:
Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109, USA
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Abstract

Individual travelling cavitation bubbles were examined as they interacted with the flow over a two-dimensional hydrofoil. Each bubble was produced from a single nucleus created upstream of the hydrofoil, and the flow near the hydrofoil was visualized using particle imaging velocimetry (PIV). Travelling bubbles were observed to generate a local region of turbulence as they passed close to an unstable laminar boundary layer. By producing a locally turbulent region, the bubbles could temporarily sweep away a portion of attached cavitation at the foil midchord. Also, the bubbles were observed to strongly interact with a turbulent boundary layer, producing local regions of patch cavitation.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 322 , 10 September 1996 , pp. 329 - 353
Copyright
© 1996 Cambridge University Press

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