Boiling or condensing phenomena of liquid on the solid surface is greatly affected by the wetting condition of the liquid to the solid. Although the contact angle is one of the most important parameter to represent the wetting condition, the behavior of the contact angle is not understood well, especially in the dynamic condition. In this study we made molecular dynamics simulations to investigate the microscopic contact angle behavior under several conditions on the numerical density of the wall atoms. In the analyses, when the number density of the wall is lower, the changing rate of the dynamics contact angles for the variation of ΔV was higher than those for the case where the wall density is higher. This is mainly due to the crystallization of the fluid near the wall and subsequent decrease in the slip between the fluid and the wall. The analyses also show that the static contact angle decreases with increase in the number density of the wall. This was mainly induced by the increase in the number density of the wall itself.
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14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-4243-6
PROCEEDINGS PAPER
Molecular Dynamics Analyses on Microscopic Contact Angle: Effect of Wall Atom Configuration
Takahiro Ito,
Takahiro Ito
Toyohashi University of Technology, Toyohashi, Japan
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Yosuke Hirata,
Yosuke Hirata
Toshiba Corpration, Yokohama, Japan
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Yutaka Kukita
Yutaka Kukita
Nagoya University, Nagoya, Japan
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Takahiro Ito
Toyohashi University of Technology, Toyohashi, Japan
Yosuke Hirata
Toshiba Corpration, Yokohama, Japan
Yutaka Kukita
Nagoya University, Nagoya, Japan
Paper No:
ICONE14-89574, pp. 621-627; 7 pages
Published Online:
September 17, 2008
Citation
Ito, T, Hirata, Y, & Kukita, Y. "Molecular Dynamics Analyses on Microscopic Contact Angle: Effect of Wall Atom Configuration." Proceedings of the 14th International Conference on Nuclear Engineering. Volume 2: Thermal Hydraulics. Miami, Florida, USA. July 17–20, 2006. pp. 621-627. ASME. https://doi.org/10.1115/ICONE14-89574
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