Surface tension of molecular liquids: Lattice gas approach

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Ескіз
Дата
2016
Науковий керівник
Укладач
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Анотація
The approach of global isomorphism between the fluid and the Ising model is applied to obtain an expression for the surface tension of the Lennard-Jones fluid on the basis of the information about the Ising model. This is done in a broad interval of temperatures along the phase coexistence, and is valid both in a 2D and a 3D. The relation between the critical amplitudes of the surface tension of the fluid and the Ising model is derived in the vicinity of the critical point. The obtained theoretical estimates agree well with the literature results for the surface tension. The methodology is demonstrated for the 2D LJ fluid on the basis of the exact solution of the 2D Ising model and is tested for the 3D LJ fluid. As a result, an expression for the surface tension without any fitting parameter is derived.
Опис
Ключові слова
Surface tension, lattice gas, global isomorphism
Бібліографічний опис
Journal of Molecular Liquids in press
DOI
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