NDLI: Molecular Dynamics Analyses on Microscopic Contact Angle: Effect of Wall Atom Configuration

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ito, Takahiro Hirata, Yosuke Kukita, Yutaka
Copyright Year	2006
Abstract	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.
Sponsorship	Nuclear Engineering Division
Starting Page	621
Ending Page	627
Page Count	7
File Format	PDF
ISBN	0791842436
DOI	10.1115/ICONE14-89574
e-ISBN	0791837831
Volume Number	Volume 2: Thermal Hydraulics
Conference Proceedings	14th International Conference on Nuclear Engineering
Language	English
Publisher Date	2006-07-17
Publisher Place	Miami, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Fluids Wetting Dynamics (mechanics) Crystallization Atoms Molecular dynamics Molecular dynamics simulation Density Boiling
Content Type	Text
Resource Type	Article

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