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Proposal of a Groove Cavitator on a Supercavitation Propeller

Kudo, Tatsuro and Ukon, Yoshitaka and Sumino, Yoshitsugu (2001) Proposal of a Groove Cavitator on a Supercavitation Propeller. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA. (Unpublished) http://resolver.caltech.edu/CAV2001:sessionB9.003

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Abstract

A supercavitation propeller (SCP) that has high efficiency under supercavitating condition is expected as one of the most suitable propulsors for a high-speed vessel. To design a SCP with higher efficiency, a thinner cavity is recommended. However, less supercavitation sometimes occur contrary to the designer's expectation, thus the thrust becomes less than the design value and the efficiency becomes lower. In order to obtain the predicted thrust and high efficiency, it is necessary to let stable cavitation occur from the leading edge as predicted by theory. The authors propose a new cavitator that stimulates cavitation by a thin groove near the leading edge on the backside surface. Through the present comparative tests between propellers with and without the cavitator, it was clarified that the proposed cavitator is effective in stimulating and stabilizing a supercavity, and that it increases the propeller efficiency.


Item Type:Conference or Workshop Item (Lecture)
Record Number:CAV2001:sessionB9.003
Persistent URL:http://resolver.caltech.edu/CAV2001:sessionB9.003
Usage Policy:The papers of this symposium proceedings are protected by copyright, retained by the authors. Authors control translation and reproduction rights to these works. However, readers are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. This permission is in addition to rights of reproduction granted under Section 107, 108, and other provisions of the U.S. Copyright Act.
ID Code:77
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:01 May 2001
Last Modified:26 Dec 2012 07:09

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