1723 円柱ブレード風車とその風洞実験(S34-2 自然流体エネルギーの利用技術(2),S34 自然流体エネルギーの利用技術)

概要

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This report introduces an attempt for wind turbine using blades with circular cross section, although many wind turbines now has blades with wing section. The blades with circular cross section become profitable with strength, stiffness and manufacturing cost in comparison with wing type blades. This circular cylinder has a groove on the surface in longitudinal direction. This groove causes asymmetry flow around circular section. As a result the blade with circular cross section produces lift. We performed some wind tunnel test for the blade with circular cross section and wind turbine using it. Wind tunnel test shows that the maximum lift coefficient of the circular cross section blade is 0.6〜0.8 at Re. No. 1.5×10^5〜2.5×10^5 and the power coefficient of the simple wind turbine model of two blades type which we produced is 0.015〜0.03 at tip speed ratio 0.5〜0.8.
社団法人日本機械学会の論文
2007-09-07