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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of Graduate School of Engineering, Nagasaki University > Volume 48, No. 90 >

二重翼列波力タービンの性能特性


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Title: 二重翼列波力タービンの性能特性
Other Titles: Performance of Double Rotor Turbine for wave power generator
Authors: 吉田, 光弘 / 黒川, 由美 / 奥村, 哲也 / 林, 秀千人 / 瀬戸口, 俊明 / 濱川, 洋充
Authors (alternative): Yoshida, Mitsuhiro / Kurokawa, Yumi / Okumura, Tetsuya / Hayashi, Hidechito / Setoguchi, Toshiaki / Hamakawa, Hiromitsu
Issue Date: Jan-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(90), pp.15-22; 2018
Abstract: It is proposed the new type turbine for OWC that consists of Wells and Impulse rotors. Wells and impulse rotors are setconcentrically for both high efficiency and starting characteristics. This paper presentsthe concept of the turbine and some geometrical variation withthe numerical simulations in steady flow condition; hub ratio, split duct length and sweep blade. The maximum efficiency is obtained at the low flow coefficient that is fitted to the high-speed operation. The variation of efficiency with flow coefficient is small for large flow coefficient that advantages to the starting characteristics. The maximum efficiency is large at small hub ratio for the flow rate of wells turbine part decreased. The swept blade is not fit for the impulse rotor. The split duct is designed to fit the flow coefficient at the maximum efficiencies of Wells and Impulse turbines. It is pointed out that the geometry of the split duct is important to improve the turbine performance.
Keywords: Wells Turbine / Impulse Turbine / Wave Power Generation / Wave Energy / OWC
URI: http://hdl.handle.net/10069/37933
ISSN: 18805574
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 48, No. 90

Citable URI : http://hdl.handle.net/10069/37933

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