Two-Phase Flow Valve and Fitting Losses

Two-phase friction loss in valves and fittings can be estimated using the no-slip velocity, v s, the single-phase head Coefficients. K, and the no-slip density  

AP = Kpns(Vns)V9266(1 - Acd (psi) where Acc is the acceleration term estimated from Equation 26.7. 

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