Sutherland potential: Difference between revisions
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The '''Sutherland potential''' <ref>[http://dx.doi.org/10.1080/14786449308620508 William Sutherland "The viscosity of gases and molecular force", Philosophical Magazine '''36''' pp. 507-531 (1893)]</ref><ref>[http://dx.doi.org/10.1103/RevModPhys.36.1025 H. W. Graben and R. D. Present "Third Virial Coefficient for the Sutherland (∞, ν) Potential", Reviews of Modern Physics '''36''' pp. 1025-1033 (1964)]</ref> is given by | |||
The '''Sutherland potential''' <ref> | |||
:<math> | :<math> | ||
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where <math> \Phi_{12}\left( r \right) </math> is the [[intermolecular pair potential]], <math>r := |\mathbf{r}_1 - \mathbf{r}_2|</math> is the distance between site 1 and site 2, | where <math> \Phi_{12}\left( r \right) </math> is the [[intermolecular pair potential]], <math>r := |\mathbf{r}_1 - \mathbf{r}_2|</math> is the distance between site 1 and site 2, | ||
<math> \sigma </math> is the hard | <math> \sigma </math> is the radius of the central hard core, <math> \epsilon </math> is the energy well depth (<math> \epsilon > 0 </math>), and | ||
<math> \gamma </math> is a parameter that controls the interaction range. | <math> \gamma </math> is a parameter that controls the interaction range. For example, for <math>\gamma=6</math> the potential look like | ||
:[[Image:Sutherland.png|500px]] | |||
==References== | ==References== | ||
<references/> | <references/> | ||
Latest revision as of 14:32, 6 April 2010
The Sutherland potential [1][2] is given by
where is the intermolecular pair potential, is the distance between site 1 and site 2, is the radius of the central hard core, is the energy well depth (), and is a parameter that controls the interaction range. For example, for the potential look like
References[edit]
Related reading
- D. Levi and M. de Llano "Closed form of second virial coefficient for Sutherland potential", Journal of Chemical Physics 63 pp. 4561-4562 (1975)
- Jianxiang Tian and Yuanxing Gui "Liquid-gas phase transition to first order of an argon-like fluid modeled by the hard-core similar Sutherland potential", International Journal of Modern Physics B 18 pp. 2057-2069 (2004)
- A. Díez, J. Largo and J. R. Solana "Structure and thermodynamic properties of Sutherland fluids from computer simulation and the Tang–Lu integral equation theory", Fluid Phase Equilibria 253 pp. 67-73 (2007)
- Jianguo Mi, Yiping Tang, and Chongli Zhong "Theoretical study of Sutherland fluids with long-range, short-range, and highly short-range potential parameters", Journal of Chemical Physics 128 054503 (2008)
- Roman Melnyk, Pedro Orea, Ivo Nezbeda, and Andrij Trokhymchuk "Liquid/vapor coexistence and surface tension of the Sutherland fluid with a variable range of interaction: Computer simulation and perturbation theory studies", Journal of Chemical Physics 132 134504 (2010)
- F. Paragand, F. Feyzi and B. Behzadi "Application of the SAFT-VR equation of state to vapor–liquid equilibrium calculations for pure components and binary mixtures using the Sutherland potential", Fluid Phase Equilibria 290 pp. 181-194 (2010)