Gas -Turbine Powerplants For Two-Phase Hydropropulsion 

 2fi 



ZC 



2fi 



1.6 



12 



0.8 



0.i. 



10 



20 30 



V- (m/s) 



50 



Fig. 10 - Variation of the 

 transition volumic ratio \' 



By means of the water continuity and by Eq. (12) one obtains 



— 1 + e — 

 V \ P 



V ' V 1 + X 



which can be written as 



1 + \ = 1 + X.J /3j™ 



(23) 



By means of Eq. (23) it will be possible to calculate the local cross secticMi, 

 particularly the throat and discharge sections. In Fig. (11) the discharge ra- 

 tios A^/Aq are represented for a few values of /Qp ; for /3p = the critical 

 ratio Aj./Ao is represented too. 



It is useful to remark that from Eq. (23) the continuity equation for the two- 

 phase flow can be written as 



AV 



AV 



1 + X 1 + \^p^ \^K^ 



const . 



(23') 



1121 



