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下掛け式開放周流形水車の出力特性に関する実験的研究


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Title: 下掛け式開放周流形水車の出力特性に関する実験的研究
Other Titles: Experimental Study on Output Characteristics of an Opened Circumferential Flow Type Undershot Water Turbine
Authors: 佐々木, 壮一 / 黒川, 由美 / 大宅, 雄一郎 / 三宅, 頼人
Authors (alternative): SASAKI, Soichi / KUROKAWA, Yumi / OYA, Yuichiro / MIYAKE, Yorito
Issue Date: Jul-2018
Publisher: 長崎大学大学院工学研究科 / Graduate School of Engineering, Nagasaki University
Citation: 長崎大学大学院工学研究科研究報告, 48(91), pp.1-6; 2018
Abstract: In order to recovering the small hydraulic energy that of enough flow rate but the low potential head, the output characteristics of an opened circumferential flow type undershot water turbine was evaluated by the model test and the numerical simulation. In this experiment, the output performance of the water turbine which is the number of blades 8 and the pitch angle -30°was the highest. When the rear inclined impeller rotated one pitch after touching to the water surface, the circumferential momentum and the wetting length of the impeller became larger than the forward inclined impeller. In the case of the undershot water turbine, we scoped that it is effective to design the number of blades appropriately small number in order to not impede the conversion of the momentum to the rotational motion for the blade in the water.
Keywords: Open Channel / Water Turbine / Impeller / Blade / Numerical Simulation
URI: http://hdl.handle.net/10069/38458
ISSN: 18805574
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 48, No. 91

Citable URI : http://hdl.handle.net/10069/38458

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