S0503-1-6 フェンス上部に設置したクロスフロー型風車の性能([S0503-1]自然の流体エネルギー利用技術(1))

概要

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Performance of a cross-flow wind turbine located above a windbreak fence and the associated velocity fields have been investigated experimentally. Effects of the clearance between the wind turbine and the fence, as well as the direction of the turbine rotation were examined.The power coefficient of the wind turbine located above the fence was found to be higher than that of the wind turbine without a fence. When the turbine was rotating clockwise, i.e. the blades on the upstream side of the turbine were moving upward, the power coefficient decreased with the increasing clearance between the turbine and the fence. In contrast, when the turbine was rotating counterclockwise, the power coefficient increased with the increasing clearance. It was found that the variation of the power of wind turbine was related to the air flow velocity in clearance region and to the rotational direction of the wind turbine. The porous board fence and the wind turbine rotating clockwise was found to be most effective in reducing the flow velocity in the wake region.
一般社団法人日本機械学会の論文
2010-09-04