1720 小規模河川用サボニウス水車周りの流れ場が出力特性に及ぼす影響(S34-1 自然流体エネルギーの利用技術(1),S34 自然流体エネルギーの利用技術)

概要

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The aim of this investigation is to develop an environmentally friendly micro hydro turbine which set in small stream, e.g. creeks and channels. A model of a Savonius hydro turbine (the turbine with simple blade) was constructed and tested in a water tunnel. The power performance and flow field around the turbine were examined. It was clarified that power characteristics were changed with the distance between a turbine and bottom wall of channels, with the rotation direction of the turbine. The turbine with 90-degree phase shift (the turbine with staggered blade) improved the power performance. However, there has been no study that tried to make relationship clear about improvement of performance and flow field around a turbine. In this study we focus on the effect of Coand-like flow formed on the convex side of an advancing blade and large circulating vortices shed downstream from the tip of the blade.
社団法人日本機械学会の論文
2007-09-07