- 期刊
- OpenAccess
The Rotating Flow and Inflow Interaction over a VAWT
並列摘要
In efficiency remains the main problem with VAWT (Vertical Axis Wind Turbine). One method to improve wind turbine efficiency is to reduce the negative moment or increase the positive moment. In this study, five kinds of rotating speeds and three kinds of wind speeds were used to simulate and analyse air flow over a VAWT. The finite volume method with turbulent and sliding mesh models were employed to simulate the flowfield. The results indicate that the separation bubble disappears on the upside of the blade when the blade is rotating into the upwind, and highest differential pressure occurs near to the leading edge of the blade. Moreover, when the differential pressure is higher, the moment is greater, and the moment increases when inflow speed and rotating speed are both increasing. The output moment is similar when the tip speed ratio is identical. The selection of the tip speed radio is 1.25 when the blade chord is 1 and the radius is 2.
延伸閱讀
- Saleh, H., Hashim, I., & Basriati, S. (2013). Flow Reversal of Fully Developed Mixed Convection in a Vertical Channel with Chemical Reaction. International Journal of Chemical Engineering, 2013(), 44-47. https://doi.org/10.1155/2013/310273
- 蕭飛賓、周雅文（1996）。Studying the Coherent Structures Interaction between Jet and Wake Flows。中國航空太空學會學刊，28(4)，305-312。https://doi.org/10.6124/TAASRC.199612_28(4).05
- Cheung, W. T. (1984). Flow structures of an interrupted jet [master's thesis, The University of Hong Kong]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0029-1812201200005596
- 郭家全、孔光源、林俊源、謝嘉殷（2015）。INFLUENCES ON THE FLOW PROPERTIES OF FLOW WITH CIRCULAR OBSTRUCTION。桃園創新學報，(35)，107-123。https://www.airitilibrary.com/Article/Detail?DocID=P20140403005-201512-201601110006-201601110006-107-123
- TORII, S., & YANG, W. J. (1999). Secondary Flow Phenomena in an Axially Rotating Flow Passage with Sudden Expansion or Contraction. International Journal of Rotating Machinery, 1999(), 117-122. https://doi.org/10.1155/S1023621X9900010X