DS 



C 



c 



D 

 D 



e 

 F 



Air-Water Jet (Mist-Jet) for Ship Propulsion 



Symbol Description • •'- 



Droplet drag coefficient ..i --.:•. ::-• 



Water scoop drag coefficient ■ '-'^ ' ' 



Isothermal acoustic velocity 

 Droplet diameter - 



Nozzle equivalent diameter ■- ^^-^ - 

 Drag force on droplet 

 Drag force between phases ' '-'-'■ 



f Friction factor • • •. ^ : •- 



gj. Mass-to-force conversion ."• . '. 



^g-x Gas-to-liquid heat -transfer coefficient 



J Mechanical equivalent of heat 



K Water scoop internal loss coefficient 



L Nozzle length 



M Molecular weight . - : ; , .; - • ;.. ; . 



N Number of droplets \-;"7'— ;;;^ii ;. ii , 



P Pressure ' ' ■ 



P^ Inlet pressure -' '-'-'^' 



Pp Nozzle exit pressure 



Pq Free -stream static pressure 



Q Heat flow 



qj Energy for isothermal compression 



q^ Energy for isentropic compression 



R Gas constant 



r Water -to -air mass flow ratio 



1077 



Units 



ft/sec 



poundal 

 poundal 



lb ft/poundal sec^ 



BTU 



sec ft 2 °F 



BTU/ft poundal 



ft 



lb 



lb mole 



poundal/ft ^ 

 poundal/f t ^ 

 poundal/ft ^ 

 poundal/ft ^ 

 BTU/sec 

 BTU /lb 

 BTU/lb 

 ft poundal 



lb 



mo 1 ( 



^R 



