446 



FIGURE 25. Photographs showing progres- 

 sive development of cavitation on Teflon 

 hemispherical nose. The flow is from left 

 to right. V^ = 13.2 m/s. (a) a = 0.96; 

 (b) o = 0.63; (c) CT = 0.40. 



65° 70° 75° 80° 65° 90° 95^ 



Cavitation Separation Angle , >• 



FIGURE 26. Cavitation separation angle, YqS' ^^ ^ 

 function of cavitation number and Reynolds number for 

 hemispherical nose. 



model 



FIGURE 27. Schematic diagram of cavity nose on SST 

 hemispherical model. 



aj at 

 '" F 



2 .5 

 Q 



0006 



00 4 



002 



o O 



o 



o 



08 12 16 20 2 4 

 Reynolds Number x 10""^ 

 FIGURE 28. Cavity nose radius over diameter, r/D, as 

 a function of Reynolds number for SST hemispherical 

 mode 1 . 



Q55 



o Re -094 X 10 



■ Re - 127 X 10^ 



A Re = 1 54 X 10^ 



A Re = 2.03 X 10^ 



A A 



A A 



O ^ A 



4 ^ 



o o 



2 4 6 8 10 12 14 

 Lengtn to Height Ratio of Cavity , L(-./H^ 



FIGURE 29. Total length to maximum height ratio of 

 cavity, L /H , as a function of cavitation number and 

 Reynolds ntomber for SST hemispherical nose. 



