Polymerwirkung in Strömungen – Mechanismen und praktische Anwendungen

Abstract

Abstract Influence of polymers on the flow of liquids – mechanisms and practical uses . The effect of high polymer additives in laminar and turbulent flow is presented. The publication shows that just a few ppm of high molecular substances can drastically alter the properties of flowing systems when these flows exhibit regions of high expansion rates. The effect of polymers in laminar flow leads to an increase in pressure drop compared to the flow of Newtonian media. In turbulent flow, on the other hand, use of high polymers reduces the pressure drop. The article shows that both the increase and the decrease in pressure drop can be attributed to the same molecular effects. Potential applications of high polymer additives (polyarylamides) in technical flow systems are described, and their benefits discussed.