A general model for predicting drag reduction in crude oil pipelines

In this study, by investigating various experimental parameters, a general model is proposed for predicting the phenomenon of drag reduction in crude oil pipelines. The proposed model employs a comprehensive analysis of various operation parameters such as oil flow rate and temperature, pipe diameter and roughness, various types of drag reducing agents (DRA) and concentration. The friction factor has been calculated using experimental data and the relevant model has been developed by considering the changes of f − 1 / 2 by Re f ( 1 − n / 2 ) . The proposed model shows a good agreement with the experimental data.