It has become a well-known fact that finding sustainable solutions to the unavoidable high
pressure losses accompanying pipeline flows to increase the pumping capacity without …

Particle image velocimetry (PIV) measurement technique provides an excellent opportunity
for investigating instantaneous spatial structures which are not always possible with point …

The aim of this study is to formulate a computational fluid dynamics (CFD) model that can
illustrate the fully turbulent flow in a pipe at higher Reynolds number. The flow of fluids in a …

Spatial polymer diffusion in the drag-reduced turbulent channel flow of an inhomogeneous
polymer solution was investigated by simultaneously measuring velocity and concentration …

This work aimed to investigate the effect of louver fin configurations on the thermal
performance at different Reynolds numbers. The discussed ranges of these geometry …

The effect of local polymer solution injection on the evolution of a flat-plate turbulent
boundary layer has been investigated experimentally. Polyethylene oxide (PEO) solutions …

Concentrated solutions of guar gum in water (1000–3000 ppm) with and without KCl salt
(1000–4000 ppm) were injected near the wall for a short period (2.5 min) to investigate their …

In this paper, the rheological properties, drag reduction properties, and flow field
characteristics of hydrolyzed polyacrylamide (HPAM) solution, xanthan gum (XG) solution …

Turbulent drag reduction by additives is an effective approach to save energy in wall
turbulence. Improvement of this approach requires a better understanding of the interactions …

The modification of the near-wall structure is very important for the control of wall turbulence.
To ascertain the effect of near-wall modulation on the viscoelastic drag-reduced flow, the …