Abstract: Flexible and rigid long chain polymers in very dilute solutions can significantly reduce the drag in turbulent flows. The polymers successively stretch and coil by interacting with the turbulent structures, which changes ...

Abstract: We analyze the use of water solutions of Xanthan Gum (XG) for drag reduction (DR) in annular spaces. We provide a direct quantitative comparison between the DR in an annulus and that in straight tubes. We can fairly compare ...

Abstract: Drag reduction (DR) by polymers has several industrial applications, and it has also shown to produce beneficial effects on blood circulation and may represent a way to treat cardiovascular disorders. Concerning medical ...

Abstract: Industrial processes with non-Newtonian fluids are common in many segments such as petroleum, cosmetic, and food industries. Slurries, emulsions, and gas–liquid dispersions are some examples with industrial relevance. When ...