A small amount of polymer additives can cause substantial reduction in the energy
dissipation and friction loss of turbulent flow. The problem of polymer-induced drag …

This article provides a review of recent progress in understanding and predicting polymer
drag reduction (DR) in turbulent wall-bounded shear flows. The reduction in turbulent friction …

The third edition of this besteller covers the latest advancements in this rapidly growing field.
Focusing on analyses and critical evaluation of the subject, this new edition reviews the …

Effects of hydrophobic surface on skin-friction drag are investigated through direct numerical
simulations of a turbulent channel flow. Hydrophobic surface is represented by a slip …

Turbulence is ubiquitous in nature, yet even for the case of ordinary Newtonian fluids like
water, our understanding of this phenomenon is limited. Many liquids of practical importance …

It is well known that the drag in a turbulent flow of a polymer solution is significantly reduced
compared to Newtonian flow. Here we consider this phenomenon by means of a direct …

Numerical simulations of turbulent polymer solutions using the FENE-P model are used to
characterize the action of polymers on turbulence in drag-reduced flows. The energetics of …

After successful implementation for more than 6 decades by the oil and gas industry,
hydraulic fracturing remains the pioneer well stimulation method to date. Polymers are one …

Friction reducers (FRs) play a vital role in large-displacement shale hydraulic fracturing. This
paper reviews the drag reduction (DR) mechanism of FRs, its development and application …

Addition of a small amount of very large polymer molecules or micelle-forming surfactants to
a liquid can dramatically reduce the energy dissipation it exhibits in the turbulent flow …