Aerodynamic Performance of a Drag-Controlled Vertical Axis Wind Turbine

To utilize the wind energy in various ways, more research and development of VAWTs (vertical axis wind turbines) are expected since variation of wind direction is relatively large in Japan. In this study, we have carried out theoretical and experimental studies to clarify the aerodynamic performance...

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Bibliographic Details
Published inTurbomachinery Vol. 34; no. 12; pp. 748 - 754
Main Authors NISHI, Michihiro, YOSHIDA, Kouichi, OKADA, Rie, NODA, Hideki, NAGAWA, Masato
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo Turbomachinery Society of Japan 01.12.2006
Japan Science and Technology Agency
Subjects
Aerodynamic Performance
Drag
Momentum Theorem
Vertical Axis
Wind Turbine
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Summary:To utilize the wind energy in various ways, more research and development of VAWTs (vertical axis wind turbines) are expected since variation of wind direction is relatively large in Japan. In this study, we have carried out theoretical and experimental studies to clarify the aerodynamic performance of a new type VAWT called as drag-controlled vertical axis wind turbine, which has such structure that a horizontal shaft with a pair of flat-plate vanes is assembled to the vertical main shaft. Thus, it has the following features : Each vane angle from the wind direction is varied oppositely by the wind during the rotation. Namely, the maximum drag acts on one vane in the wind direction while the minimum force acts on the other against the wind. Using a wind tunnel, we tested the aerodynamic performance of a single stage wind turbine consisting four vanes. The corresponding results are summarized together with a momentum theorem in this paper.
ISSN:0385-8839
1880-2338
DOI:10.11458/tsj.34.748