Simulation study on drag reduction of polymer solution flow in wall micro-grooved pipelines
Adding polymers to fluids and employing micro-grooved surface structures can reduce pipe resistance,offering practical engineering applications.This study exerts numerical simulation to evaluate the drag reduction effects of Polyacrylamide(PMA)at different concentrations in micro-grooved pipelines and explores the underlying mechanisms.The results show that when PAM solution at concentration of 15,30 and 60 mg/L,the maximum drag reduction rate is 23.95%,27.60%and 30.48%,respectively.Solutions with higher concentration exhibit smaller wall shear stress during the full development stage,and those with higher drag reduction rates have reduced and more stable vorticity near the wall.The combined approach of using polymer solutions and micro-grooved structures is better than either method alone.
万方数据
维普
