Surface tension of molecular liquids: Lattice gas approach
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Дата
2016
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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