Drag reduction with polymers in gas-liquid/liquid-liquid flows in pipes: A literature review

A literature survey of the published work on drag reduction by Drag Reducing Agent (DRA) in two-phase flow is reviewed. Characteristics of the two-phase flow with drag reducing additives are described and the research approaches and methodology concerning drag reduction with additives in multiphase flow is introduced. Suggested mechanisms for drag reduction phenomena and procedure in two-phase flow are discussed. Some of the industrial application of the use of drag reducing additives in two-phase flow is explained. Finally, Recommendations, new suggested approaches for future research needs and potential areas that need further research is highlighted.