Cavitation Inception on the I.T.T.C. Standard Head Form

Cavitation inception measurements were made on the I.T.T.C. Standard Head Form over a range of speeds and dissolved air content. The results were similar to those observed in other water tunnels with resorbers. Cavitation inception indices were observed as low as 0. 4 as compared with the minimum calculated pressure coefficient of O.6. As in previous measurements a pronounced velocity scale effect was observed.