47 



APPENDIX 

 RATE OF RISE OF GAS BUBBLES IN DISTILLED WATER 



It is of interest to compare the rate of rise of bubbles of different gases in distilled 

 water. As pointed out under "Previous Experimental Work," a number of tests have been 

 conducted using oxygen bubbles. In Figure 30, the velocity of air and of oxygen bubbles in 

 distilled water is given as a function of the equivalent radius of the bubble. The results 

 indicate no significant difference in the rate of rise of the bubbles composed of oxygen and 

 those of air. 

























































50 























































































































































s 































9- 



































30 

















/r 



Jr 



I 



\ 















































I" 







"SkMi, 



km 































s 20 

















1 







% 



i 



r-r 



on 



7— 

























1.5 



I '8 















1 



















































/ 



1 



















































' 











































§ e 











~1 





















































T* 





















































/ 





















































































8 5 







t 



S 



































/* 





















































, 



' 





















































/ 



















































I 3 





/ 



















































/ 





















































2 

 1.5 



1 



/ 

























Oxygen Bubbles 



° Stuke (18 degrees C)(Pure, Presumobly Distilled) 

 □ Zdonih( 25 degrees C)( Distilled) 



/ 













































































0.02 0.04 0.06 0X36 0.1 0.2 0.4 Q6 Qfl IX) 20 



Equivalent Radius in centimeters 



Figure 30 - Terminal Velocity of Gas Bubbles in Distilled Water 

 as a Function of Bubble Size 



