Gas Nuclei Trajectories and Cavitation Inception 



size which controls cavitation inception; and for a range of entrained bubble 

 population of radius smaller than r^ . , it is always the largest bubble size which 

 fixes the point of cavitation inception. 



Calculations, similar to those shown in Figs. 7 and 8, were also carried out 

 for u = 25 fps. These results are presented in Figs. 9 and 10. 



CONCLUDING REMARKS 



The results of the analysis of the trajectories of gas nuclei entrained in a 

 fluid flowing past a two-dimensional half -body may be summarized as follows: 



0.1 

 0.08 

 0.06 



0.01 

 0.008 

 0.006 



0.004 



0.001 

 0.0008 

 0.0006 



0.0004 



0.0001 

 0.00008 

 0.00006 

 0.00004 



0.2 0.3 0.4 



VAPOR CAVITATION NUMBER - 



Fig. 9 - Upper and lower critical sizes of gas nuclei 

 as a function of vapor cavitation number and the body 

 size (U = Z5 fps) 



177 



