Abstract
Based on the definition of slip ratio, effective specific volume, and effective velocity, a simple numerical model for multiphase flow through chokes is derived by using a control-volume approach. Compared to the published theoretical models, the present numerical model accounts for slippage between phases. The present slip model is capable of predicting the critical/subcritical flow boundary and mass flow rates. A model validation study demonstrated the capability of the new model in predicting the mass flow rate with an average error of 1.37%, average absolute error of 6.37%, and standard deviation of 5.79%. The effect of selection of slip model on the improvement of present model was studied as well.
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