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No.3 (1970/06) >

 
Title :翼型のキャビテーション特性 第2報:前縁近くから圧力水を噴出させたとき
Title alternative :Cavitation Characteristics for Hydrofoil Sections of Infinite Aspect Ratio(2nd Report)
Authors :真栄田, 義才
Authors alternative :Maeda, Gisai
Issue Date :Jun-1970
Abstract :This is the second report concerning with the characteristics of hydro-foils on cavitation. On the first paper, I reported how cavitation changes the characteristics, such as lift and drag, of hydro-foils from non-cavitation. In this paper, I will discribe how pressure distribution changes, when pressure water issues from upper surface of foil to main flow around it. The pressure water is led from tank to main hole in the foil, and the main hole is connected to several small holes on the surface of foil. At non-cavitation range, experimental results show that pressure on the upper surface of foil somewhat increases, when pressure water issues out of surface of foil. Therefore, lift of foil decreases, but drag does not change as ever. On the other hand, when cavitation occurs and extends considerably on surface of the foil, the pressure water decreases pressure on the foil. But the lift does not increase compared with none issued water, and yet, the drag increases fairly. Besides, cavitation inception point (the value of cavitation coefficient K_d) is the same as n one issued water.
Type Local :紀要論文
ISSN :0387-429X
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/23947
Citation :琉球大学理工学部紀要. 工学篇 = Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering no.3 p.37 -51
Appears in Collections:No.3 (1970/06)

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