Effect of Air Injection on the Cloud Cavitation of a Hydrofoil
Abstract
This paper describes experiments investigating the effects of air injection on the cloud cavitation of an oscillating hydrofoil. The effects of continuous air injection were investigated using two different hydrofoils. Measurements of the acoustic pressure were made on the downstream test section floor and on the surface of one of hydrofoils, and the extent of noise reduction provided by air injection at various volume flow rates was determined. The acoustic surface pressure measurements were also correlated with visual observations made using high speed motion pictures of the cloud cavitation. Thus the effects of continuous air injection on specific cavitation structures could be identified. In addition, the effectiveness of pulsed air injection in achieving greater reductions in cavitation noise at volume flow rates equal to those used in continuous air injection experiments was investigated.
Additional Information
This research program was supported by the Office of Naval Research under grant number N00014-91-J-1295. The authors also greatly appreciate the advice and encouragement of Professor Allan Acosta and the help of Roberto Zenit, Don Kwak and Amir Alagheband.Files
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Additional details
- Eprint ID
- 144
- Resolver ID
- CaltechAUTHORS:REIfedsm97
- Created
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2004-10-29Created from EPrint's datestamp field
- Updated
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2019-10-02Created from EPrint's last_modified field