... is very important. In this research, the most significant part of a new screw pump model is presented. This model deals with the compressibility, acceleration and heat transfer effects of the two-phase mixture inside the internal clearances. It is used to predict the decrease of the volumetric flow rate...

... and liquid phase volumetric flow rates. The slug characteristics obtained by non-invasive and non-intrusive ultrasonic techniques were used as inputs to the slug closure model which calculates the factors K 1 (Liquid) , K 2 (Liquid) , K 3 (Gas) and K 4 (Gas) . These factors are functions of the slip ratio...