相反転方式水力発電に関する基礎研究(第2報,相反転ランナの水力特性とポテンシャル干渉)(流体工学,流体機械)

概要

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The authors have proposed, in the previous report, the counter-rotational type machine for the hydroelectric power generation. Continuously, the hydraulic performance of the counter-rotating runners is discussed in this report. The variable speed/head and the discharge characteristics satisfy the similarity laws, and the rotational speed of the individual runner increases respectively in proportion to the discharge that can be predicted theoretically under the counter-balanced condition of the angular momentum change through the runners. These behaviors cause that the operating point with the maximum efficiency is at slower speed or smaller discharge than one with the maximum output. The potential interference between the front and the rear runners is also discussed with the numerical results of the quasi-three dimensional flow analysis.
社団法人日本機械学会の論文
2002-12-25