Flow measurements around a propeller strut for a high-speed boat

Yasuaki Kohama; Risaburo Oba; Fukuo Ota; Makoto Ohyama; Yoshiyuki Terada

Flow measurements around a propeller strut for a high-speed boat

Yasuaki Kohama, Risaburo Oba, Fukuo Ota, Makoto Ohyama, Yoshiyuki Terada

Research output: Contribution to journal › Article › peer-review

Abstract

Systematic flow measurements were performed around a typical propeller strut of 13.8% in thickness ratio, designed for a high speed-boat engine, in a low turbulence wind tunnel as well as a cavitation tunnel, and also around a real strut equipted for an engine at sea. A relatively small drag coefficient C_D ≠ 0.02 was obtained in the wind tunnel, indicating a strut having reasonable hydrodynamic performance. We also discussed the state of the boundary layer, the thickness distribution, the velocity distribution, the behavior of the following wake and cavitation performance.

Original language	English
Pages (from-to)	2217-2224
Number of pages	8
Journal	Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	57
Issue number	539
Publication status	Published - 1991 Jul

ASJC Scopus subject areas

Mechanical Engineering

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year = "1991",

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AU - Kohama, Yasuaki

AU - Oba, Risaburo

AU - Ota, Fukuo

AU - Ohyama, Makoto

AU - Terada, Yoshiyuki

PY - 1991/7

Y1 - 1991/7

N2 - Systematic flow measurements were performed around a typical propeller strut of 13.8% in thickness ratio, designed for a high speed-boat engine, in a low turbulence wind tunnel as well as a cavitation tunnel, and also around a real strut equipted for an engine at sea. A relatively small drag coefficient CD ≠ 0.02 was obtained in the wind tunnel, indicating a strut having reasonable hydrodynamic performance. We also discussed the state of the boundary layer, the thickness distribution, the velocity distribution, the behavior of the following wake and cavitation performance.

AB - Systematic flow measurements were performed around a typical propeller strut of 13.8% in thickness ratio, designed for a high speed-boat engine, in a low turbulence wind tunnel as well as a cavitation tunnel, and also around a real strut equipted for an engine at sea. A relatively small drag coefficient CD ≠ 0.02 was obtained in the wind tunnel, indicating a strut having reasonable hydrodynamic performance. We also discussed the state of the boundary layer, the thickness distribution, the velocity distribution, the behavior of the following wake and cavitation performance.

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JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

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