期刊
PHYSICS OF FLUIDS
卷 34, 期 12, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0125279
关键词
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资金
- NSF [1637960]
- NASA [80NSSC19K0406]
- NASA Space Technology Research Fellowship program [80NSSC17K0144]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1637960] Funding Source: National Science Foundation
In this experiment conducted aboard the International Space Station, centimeter-sized sessile drop coalescence was observed. The results showed that the Davis-Hocking model is an appropriate contact line model for inertial-capillary spreading.
We report experiments of centimeter-sized sessile drop coalescence aboard the International Space Station, where microgravity conditions enable inertial-capillary spreading motions to be explored for a range of hydrophobic wetting conditions. Observations of the time traces of the coalescence event and projected areas compare favorably to numerical simulations, which employ the Davis-Hocking contact line (CL) condition with contact line mobility M parameter independently measured using the resonant-frequency scan technique of Xia and Steen [ Moving contact-line mobility measured, J. Fluid Mech. 841, 767-783 (2018)]. This observation suggests that M is a material parameter, and that the Davis-Hocking model is an appropriate CL model for inertial-capillary spreading.
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