2015 Fiscal Year Final Research Report
Molecular scale analysis of static and dynamic wetting mechanism of two-component liquid including water
| Project/Area Number |
25420123
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 分子動力学 / 濡れ / 界面エネルギー / 混合系 |
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| Outline of Final Research Achievements |
Molecular Dynamics simulations of the dynamic wetting behavior of argon droplet on a solid surface as well as static behavior of water-alcohol mixture droplet were performed. For the former, by using the ensamble average technique, the spatial distributions of the density, velocity and stress tensor were extracted during the whole process of the dynamic wetting, and it was indicated that there exists a strong correlation between the solid-liquid velocity difference and the stress near the contact line of the droplet and this largely affects the dynamic wetting behavior. For the latter, the solid-liquid, liquid-vapor, solid-vapor interfacial tensions were independently evaluated in quasi-one-dimensional systems from mechanical and theromdynamic points of view, and showed that the balance among these tensions hold at the contact line of the droplet system.
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| Free Research Field |
流体力学，熱力学
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