Early transition, relaminarization and drag reduction in the flow of polymer solutions through microtubes
Bidhan Chandra, V. Shankar, Debopam Das
Abstract
Experiments are performed to investigate the onset of early transition and drag reduction in the flow of polymer (polyacrylamide and polyethylene oxide) solutions through rigid microtubes of diameters in the range 0.49–2.84 mm. We measure friction factor variation with Reynolds number for varying polymer concentrations and tube diameters, and the Reynolds number, .
Topics & Concepts
DragMechanicsMaterials scienceFlow (mathematics)Reduction (mathematics)Lift-induced dragDrag coefficientPhysicsGeometryMathematicsRheology and Fluid Dynamics StudiesFluid Dynamics and Thin FilmsPolymer Foaming and Composites