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Wertheim M.S. — Fluids with Highly Directional Attractive Forces. III. Multiple Attraction Sites
Wertheim M.S. — Fluids with Highly Directional Attractive Forces. III. Multiple Attraction Sites

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Название: Fluids with Highly Directional Attractive Forces. III. Multiple Attraction Sites

Автор: Wertheim M.S.

Аннотация:

We derive a reformulation of statistical thermodynamics for fluids of molecules which interact by highly directional attraction. The molecular model consists of a repulsive core and several sites of very short-ranged attraction. We explore the relationship between graph cancelation in the fugacity expansion and three
types of steric incompatibility between repulsive and attractive interactions involving several molecules. The steric effects are used to best advantage in a limited regrouping of bonds. This controls the density parameters which appear when articulation points are eliminated in the graphical representation. Each density parameter is a singlet density for a species consisting of molecules with a specified set of sites bonded. The densities satisfy subsidiary conditions of internal consistency. These conditions are equivalent to a minimization of the Helmholtz free energy A. Graphical expressions for A and for the pressure p are derived. Analogs of the s-particle direct correlation functions and of the Ornstein Zernike equation are found.


Язык: en

Рубрика: Физика/

Тип: Статья

Статус предметного указателя: Неизвестно

ed2k: ed2k stats

Год издания: 1986

Количество страниц: 19

Добавлена в каталог: 31.10.2013

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