The Effects of Polymer Solutions on Drag Reduction in Horizontal Pipe Two-Phase Flow

The effect of the presence of a drag reducing agent (DRA) on the pressure drop in a horizontal pipe cocurrent two-phase flow of gas and liquid is investigated in this study. The employing DRA is an anionic polyacrylamide. An experimental set-up is erected in which pressure drop is measured in a test section of 10m long horizontal pipe with an I.D. of 2.54 cm. Based on the experimental data which are obtained for different operating conditions, a mathematical model is proposed for prediction of drag reduction for a given polymer. The proposed model contains a few parameters which should be obtained for the used polymer. These parameters are obtained for Superfloc A-95, in a given range of Reynold`s number. The proposed model could also be used for calculation of friction and maximum drag reduction as a function of DRA concentration

کلیدواژه ها:

DRA ، Pressure drop ، Horizontal pipe ، Two- phase flow