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International Journal of Rotating Machinery - Volume 4 1998, Issue 1, Pages 17-24

Department of Mechanical Engineering, Saga University, 1 Honjo-Machi, Saga-shi, Saga 840, Japan

Received 13 May 1997; Revised 25 May 1997

Copyright © 1998 Hindawi Publishing Corporation. 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.

Abstract

The Wells turbine for a wave power generator has hysteretic characteristics in areciprocating flow, which results in the inaccurate prediction of performance in a quasisteadyanalysis. In order to clarify the hysteretic characteristics, an experimental investigationhas been made by use of a newly devised turbine equipment in which a sinusoidal flowcondition is simulated. The results have shown that hysteresis becomes more pronounced as solidity and blade thickness become larger, but it is insensitive to the Reynolds number and blade surface roughness. By means of pressure measurements on the blade surface, it is found that the hysteresis occurs due to different behavior of wakes between an accelerating flow and a decelerating flow.





Autor: T. Setoguchi, M. Takao, and K. Kaneko

Fuente: https://www.hindawi.com/



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