Lennard-Jones equation of state
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The equation of state of the Lennard-Jones model.
Johnson, Zollweg and Gubbins equation of state
Johnson et al [1] proposed an equation of state based on 33 parameters, which accurately reproduces the vapor liquid equilibrium curve.
Kolafa and Nezbeda equation of state
The Kolafa and Nezbeda equation of state [2]
Melting line
The solid and liquid densities along the melting line are given by the equations of Mastny and de Pablo (Ref [3] Eqs. 20 and 21):
![{\displaystyle \rho _{\mathrm {solid} }=\beta ^{-1/4}\left[0.908629-0.041510\beta +0.514632\beta ^{2}-0.708590\beta ^{3}+0.428351\beta ^{4}-0.095229\beta ^{5}\right]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/9d42739dd208f4ac0bb02525ea454ca8598593fd)
and
![{\displaystyle \rho _{\mathrm {liquid} }=\beta ^{-1/4}\left[0.90735-0.27120\beta +0.91784\beta ^{2}-1.16270\beta ^{3}+0.68012\beta ^{4}-0.15284\beta ^{5}\right]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/f25d53a5319a238d2c5b4ace3f32f59054dea660)
References
- ↑ J. Karl Johnson, John A. Zollweg and Keith E. Gubbins "The Lennard-Jones equation of state revisited", Molecular Physics 78 pp. 591-618 (1993)
- ↑ Jirí Kolafa, Ivo Nezbeda "The Lennard-Jones fluid: an accurate analytic and theoretically-based equation of state", Fluid Phase Equilibria 100 pp. 1-34 (1994)
- ↑ Ethan A. Mastny and Juan J. de Pablo "Melting line of the Lennard-Jones system, infinite size, and full potential", Journal of Chemical Physics 127 104504 (2007)
Related reading
- Karel Aim, Jirí Kolafa, Ivo Nezbeda and Horst L. Vörtler "The Lennard-Jones fluid revisited: new thermodynamic data and new equation of state", Fluid Phase Equilibria 83 pp. 15-22 (1993)
- G. Sh. Boltachev and V. G. Baidakov "Equation of State for Lennard-Jones Fluid", High Temperature 41 pp. 270-272 (2003)
- Hertanto Adidharma and Maciej Radosz "The LJ-Solid Equation of State Extended to Thermal Properties, Chain Molecules, and Mixtures", Industrial and Engineering Chemistry Research 43 pp. 6890 - 6897 (2004)
- David M. Eike, Joan F. Brennecke, and Edward J. Maginn "Toward a robust and general molecular simulation method for computing solid-liquid coexistence", Journal of Chemical Physics 122 014115 (2005)