既存翼型の翼列のキャビテーション性能(第1報)

概要

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(1) The characteristics of three kinds of hydrofoils (Clark Y, Clark Y.H. and Ogival form of each 6% thickness ratio) arranged in a straight grate with and without cavitation occurrence have been experimentally obtained. (2) Comparing the three kinds of hydrofoils with each other in view of the lastest cavitation incipience, Clark Y.H. is the most superior. (3) In comparing the characteristics by the polar diagrms, the Ogival 6% is proved to be the most superior at the high speed range of flow. (4) From the standpoint that the angle of incidence, at which the drag-lift ratio is minimum, changes least due to the change of cavitation number, Clark Y.H. is the most superior. (5) The order of superiority mentioned in (2), (3) and (4) coincides with the case of the single hydrofoil free from mutual interference. (6) The hydrofoils in grate present cavitation incipience later than the isolated one. (7) The characteristics of the hydrofoils arranged in this grate condition are superior at low speed but inferior at high speed to those of the single hydrofoil.
一般社団法人日本機械学会の論文
1951-10-20