Abstract
The ability of a micro-groove to prevent the spreading of HFE-7100 fluid (C4F9OCH3) having low surface tension (γ = 13.6 mN/m) on a surface is studied. In this study, micro-grooves were made around square openings of a plate made of either polycarbonate or 316 stainless steel. To verify effectiveness of micro-grooves to stop the spread of HFE-7100, experiments were done under non-saturated and saturated conditions. Under non-saturated conditions the micro-grooves on both materials confined the liquid up to apparent angle of 55 ± 5 due to the edge effect. Saturated gas-vapor mixture with vapor mass fraction of w v = 88% and w v = 97% did not significantly influence the confinement of the liquid by the micro-groove. This result is promising for application of micro-grooved plates in CIMEX experiment planned for ISS.
Original language | English |
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Pages (from-to) | 27-33 |
Number of pages | 7 |
Journal | Microgravity Science and Technology |
Volume | 25 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Feb 2013 |
Keywords
- Edge effect
- Liquid pinning
- Liquid spreading
- Low surface tension
- Micro-groove
- Wetting
ASJC Scopus subject areas
- Modelling and Simulation
- Engineering(all)
- Physics and Astronomy(all)
- Applied Mathematics