NOTATION 



A Projected area of body 



(o gr \ 

 = I 

 3 V 2 I 



D Drag of body 



e Coefficient of surface viscosity 



g Acceleration due to gravity 



I Length parameter of body 



M Dimensionless parameter I = — j J 



r Equivalent radius of bubble, i.e., radius of a sphere of equal volume 



Re Reynolds number I = — 1 



/ 2r £/ p '\ 

 Re' Reynolds number inside fluid body 1= — — f J 



U Terminal velocity 



/ 2r £/ 2 p\ 

 (V« Weber number I = — I 



H Coefficient of dynamic viscosity of fluid medium 



n' Coefficient of dynamic viscosity of fluid inside fluid body 



p Density of fluid medium 



p ' Density of body 



a Interfacial tension 



