Summaries to Technical Papers of Annual Meeting, Japan Association for Wind Engineering
Annual Meeting 2005, Japan Association for Wind Engineering
Session ID : s11-3
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Investigation of Driving Mechanism of Verticl Axis Wind Turbine(VAWT) and Application of a Collection-Acceleration Device of Wind to VAWT
Koichi Watanabe, *Shuhei Takahashi, Yuji Ohya, Takashi Karasudani, Kimihiko Watanabe
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Keywords: Wind Energy, VAWT, Wind-lens, Wind Tunnel Experiment, CFD
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Abstract

The driving mechanism of Vertical Axis Wind Turbine(VAWT) is investigated numerically and experimentally. The numerical analysis is based on a DNS which is applied to the flow field including a moving aerofoils. The numerical result shows that a positive forgue is generated when an aerofoil is moving in the upstream of VAWT. In this situation, the leading edge of an aerofoil has a strong negative pressure and thus the forgue is generated. For the application of 2-D Wind lens(a collection and acceralation device) to VAWT, the output performance remarkably improves. becouse of an increase in approaching wind speed.

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© 2005 Japan Association for Wind Engineering
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