The slippery liquid-infused porous surfaces inspired by the microstructure of carnivorous
nepenthes have aroused widespread attention, which show stable liquid repellency …

Water-soluble polymers with high molecular weights are known to decrease the frictional
drag in turbulent flow very effectively at concentrations of tens or hundreds of ppm. This drag …

Our living environment is surrounded by turbulence, which is also a concern of the global
energy consumption and the greenhouse gas emission, and the viscous force on the solid …

In our day to day life we see the phenomenon of turbulence everywhere, and it is one of the
main reasons in loss of energy. We all know about the energy crisis our world is facing and …

The effect of drag‐reducing agents (DRAs) on fluid flows in straight pipes has been well
documented. Key among these is the effect of DRAs on turbulence statistics (Reynolds …

Direct numerical simulations (DNS) of turbulent fronts spreading into an irrotational flow
region are used to analyse the turbulent entrainment mechanism for viscoelastic fluids. The …

Nature evolution provides nature surface treasures with special and fascinating surface
function to inspire design, such as the drag reduction of sharkskin. In this overview, the …

Publications on underwater drag reduction by gas have been gathered in the present study.
Experimental methods, results and conclusions from the publications have been discussed …

It has gradually developed into an undisputable fact that sharkskin surface has the obvious
drag reduction effect compared with the absolutely smooth skins, and it has been put into …

Drag reduction by polymer is an important energy-saving technology, which can reduce
pumping pressure or promote the flow rate of the pipelines transporting fluid. It has been …