Effect of inlet nozzle shape on performance of darrieus-type hydro-turbine operated in small open water channel

Nakashima Kazuhiko, Matsusita Daisuke, Satoshi Watanabe, Shinichi Tsuda, Furukawa Akinori

研究成果: 会議への寄与タイプ学会誌査読

抄録

A Darrieus-type hydro-turbine has been developed for the utilization of extra low head hydraulic energy. In the case of a ducted Darrieus-type hydro-turbine which consists of an intake, a runner, a casing and a draft tube, it has been found that the Darrieus runner with the narrow intake can generate larger torque without deterioration of efficiency than that with the parallel intake with the constant width. In this paper, the effect of the shape of the inlet nozzle on the performance of the Darrieus-type hydro-turbine operated in open channel flow is investigated both experimentally and numerically. Tested nozzles are two types of two-dimensional symmetric inlet nozzle, Half Diameter curved nozzle (HD nozzle) and Straight Line nozzle (SL nozzle). As a result, the Darrieus hydroturbine with SL nozzle generates larger power and yields higher efficiency than that with HD nozzle. In addition, the effects of nozzle converging angle and outlet width of SL nozzle on the turbine performance are investigated. As a result, it is found that the Darrieus hydroturbine with SL nozzle having large converging angle generates larger power with higher efficiency than that with the nozzle having small converging angle. And then, it is found that the generated power increases when SL nozzle with large outlet width is installed.

本文言語英語
出版ステータス出版済み - 1月 1 2015
イベントASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015 - Seoul, 韓国
継続期間: 7月 26 20157月 31 2015

その他

その他ASME/JSME/KSME 2015 Joint Fluids Engineering Conference, AJKFluids 2015
国/地域韓国
CitySeoul
Period7/26/157/31/15

!!!All Science Journal Classification (ASJC) codes

  • 流体および伝熱

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