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International Journal of Rotating Machinery
Volume 2006, Article ID 17379, 7 pages

Experimental Study of a Radial Turbine Using Pitch-Controlled Guide Vanes for Wave Power Conversion

1Department of Mechanical Engineering, Matsue National College of Technology, 14-4 Nishiikuma-cho, Matsue-shi, Shimane 690-8518, Japan
2Department of Architectural Facility, Doowon Technical College, 678 Janwon-ri, Ansung-si, Kyongki 456-890, Korea
3Department of Mechanical Engineering, Saga University, 1 Honjo-machi, Saga-shi, Saga 840-8502, Japan

Received 13 August 2005; Accepted 2 September 2005

Copyright © 2006 Manabu Takao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In order to develop a high-performance radial turbine for wave power conversion, a radial turbine with pitch-controlled guide vanes has been proposed and manufactured in the study. The proposed radial turbine has been investigated experimentally by model testing under steady and sinusoidal flow conditions. Then, the experimental results have been compared with those of the conventional radial turbine for wave power conversion, that is, a radial turbine with fixed guide vanes. As a result, the running characteristics of the proposed radial turbine under steady and sinusoidal flow conditions were clarified and the effect of diffuser setting angle of guide vane on the turbine characteristics was presented. Furthermore, it seems that the proposed radial turbine is much superior to the conventional radial turbine.