頁籤選單縮合
題 名 | The Rotating Flow and Inflow Interaction over a VAWT |
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作 者 | Hsu, Uzu-kuei; Tai, Chang-hsien; Lin, Chien-yao; Chang, Liang-gi; | 書刊名 | Journal of Aeronautics, Astronautics and Aviation. Series A |
卷 期 | 43:1 2011.03[民100.03] |
頁 次 | 頁27-36 |
分類號 | 447.63 |
關鍵詞 | Vertical Axis Wind Turbine; VAWT; Finite volume method; Sliding grid; Tip speed radio; |
語 文 | 英文(English) |
英文摘要 | 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. |
本系統中英文摘要資訊取自各篇刊載內容。