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 …

Adding a small amount of polymers can achieve significant drag reduction effects. However,
for external flows, the common homogeneous mixing and diffusing injection methods are not …

Turbulent pipe flow is still an essentially open area of research, boosted in the last two
decades by considerable progress achieved on both the experimental and numerical …

It is well known that the greater transport of mass, momentum, and heat by turbulent flows
has a significant effect on the efficiency of thermofluid systems. This effect is sometimes …

One important issue for drag reduction of turbulent flow with polymers is the pipe diameter
effect. Although this scale-up effect has been extensively investigated, there are still …

An experimental investigation was conducted for a better understanding of the turbulence
behavior and the coherent structure in a turbulent boundary layer over a heated plate, which …

Fine-scale flow motions are measured in a Newtonian and polymer drag-reduced turbulent
boundary layer (TBL) at a common momentum thickness Reynolds number-criterion. We …

Dielectric barrier discharge plasma actuators (DBD-PAs) are deployed experimentally for
the first time in a feed-forward proportional-derivative (PD) control system, where the …

We present a pneumatic approach for massive production of poly (vinyl alcohol)(PVA)
filaments based on a mixing mechanism at the micrometer scale using so-called Flow …

In this work, we propose a promising emulsified drag reducer with multiple components and
investigate its flow characteristic within a microtube flow system experimentally and …