Abstract
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 was measured by using a micro PIV (particle image velocimetry) system for comparison with theoretical velocity distribution which satisfied the non-slip condition on a solid surface. The slip flow on the hydrogel was found to be related to the degree of swelling and molecular weight of the hydrogel materials. This shows the possibility of a reduction in wall shear stress as a result of the decrease in the velocity gradient near a wall surface.
| Original language | English |
|---|---|
| Article number | 065702 |
| Journal | Measurement Science and Technology |
| Volume | 25 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 Jun |
| Externally published | Yes |
Keywords
- drag reduction
- frictional drag
- hydrogel
- micro PIV (particle image velocimetry)
ASJC Scopus subject areas
- Instrumentation
- Engineering (miscellaneous)
- Applied Mathematics