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 …

Surface wettability plays a significant role in reducing solid-liquid frictional resistance,
especially the superhydrophilic/hydrophilic interface because of its excellent thermodynamic …

The hydrogel is a novel material with drag-reducing ability, which has great potential to be
applied in marine applications. In this paper, a series of superhydrophilic hydrogels were …

Slip flow on a hydrogel surface was investigated in order to clarify the effect of drag
reduction on the aqueous surface of living things. Thin-film flow along the hydrogel surface …

Some cationic surfactants with suitable counterions can self-assemble into threadlike
micelles (TLMs) in aqueous solution. The presence of TLMs imparts to the aqueous system …

Poly (vinyl alcohol)(PVA) hydrogel tube was prepared from PVA-dimethylsulfoxide/water
solution by repetitive cooling method. The inner surface of the PVA hydrogel tube was …

Poly (vinyl alcohol)(PVA) hydrogel tube was prepared (sub-millimeter inner diameter) from
PVA-dimethylsulfoxide/water solution by repetitive cooling method. The inner surface of the …

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