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 …

The current work qualitatively surveys the phenomenon of polymer drag reduction from the
standpoint of the salient coherent motions in the near-wall region of wall-bounded turbulent …

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 …

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 …

Elasto-inertial turbulence (EIT) is a new state of turbulence found in inertial flows with
polymer additives. The dynamics of turbulence generated and controlled by such additives …

The Oldroyd-B fluid has become the starting point for almost all complex flow calculations
and analysis involving the behavior of dilute polymer solutions. The reasons for this are …

Polymer additives can substantially reduce the drag of turbulent flows and the upper limit,
the so-called state of 'maximum drag reduction'(MDR), is to a good approximation …

In this study, we experimentally investigate the turbulent drag-reduction (DR) mechanism in
flow through ducts of circular, rectangular and square cross-sections using two grades of …

The behaviour of a nominally two-dimensional ventilated partial cavity was examined over a
wide range of size scales and flow speeds to determine the influence of Froude, Reynolds …

We experimentally compared the drag-reduced turbulent channel flow of three different
additives: a flexible polymer, a rigid polymer and a surfactant. A high drag reduction (HDR) …