N-6 Lennard-Jones potential: Difference between revisions
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The '''n-6 Lennard-Jones potential''' is a variant the more well known [[Lennard-Jones model]] (or from a different point of view, a particular case of the [[Mie potential]]) | The '''n-6 Lennard-Jones potential''' is a variant the more well known [[Lennard-Jones model]] (or from a different point of view, a particular case of the [[Mie potential]]). The potential is given by <ref>[http://dx.doi.org/10.1063/1.3253686 Alauddin Ahmed and Richard J. Sadus "Solid-liquid equilibria and triple points of n-6 Lennard-Jones fluids", Journal of Chemical Physics '''131''' 174504 (2009)]</ref>: | ||
:<math> \Phi_{12}(r) = \epsilon \left( \frac{n}{n-6} \right)\left( \frac{n}{6} \right)^{\frac{6}{n-6}} \left[ \left(\frac{\sigma}{r} \right)^{n}- \left( \frac{\sigma}{r}\right)^6 \right] </math> | :<math> \Phi_{12}(r) = \epsilon \left( \frac{n}{n-6} \right)\left( \frac{n}{6} \right)^{\frac{6}{n-6}} \left[ \left(\frac{\sigma}{r} \right)^{n}- \left( \frac{\sigma}{r}\right)^6 \right] </math> | ||
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==Melting point== | ==Melting point== | ||
An approximate method to locate the melting point is given in <ref>[http://dx.doi.org/10.1063/1.3552948 Sergey A. Khrapak, Manis Chaudhuri, and Gregor E. Morfill "Freezing of Lennard-Jones-type fluids", Journal of Chemical Physics '''134''' 054120 (2011)]</ref>. See also <ref>[http://dx.doi.org/10.1063/1.4707746 J. M. G. Sousa, A. L. Ferreira, and M. A. Barroso "Determination of the solid-fluid coexistence of the n − 6 Lennard-Jones system from free energy calculations", Journal of Chemical Physics '''136''' 174502 (2012)]</ref>. | An approximate method to locate the melting point is given in <ref>[http://dx.doi.org/10.1063/1.3552948 Sergey A. Khrapak, Manis Chaudhuri, and Gregor E. Morfill "Freezing of Lennard-Jones-type fluids", Journal of Chemical Physics '''134''' 054120 (2011)]</ref>. See also <ref>[http://dx.doi.org/10.1063/1.4707746 J. M. G. Sousa, A. L. Ferreira, and M. A. Barroso "Determination of the solid-fluid coexistence of the n − 6 Lennard-Jones system from free energy calculations", Journal of Chemical Physics '''136''' 174502 (2012)]</ref>. | ||
==Shear viscosity== | |||
<ref>[http://dx.doi.org/10.1063/1.4919296 Stephanie Delage-Santacreu, Guillaume Galliero, Hai Hoang, Jean-Patrick Bazile, Christian Boned and Josefa Fernandez "Thermodynamic scaling of the shear viscosity of Mie n-6 fluids and their binary mixtures", Journal of Chemical Physics '''142''' 174501 (2015)]</ref> | |||
==References== | ==References== | ||
<references/> | <references/> | ||
Revision as of 19:18, 13 May 2015
The n-6 Lennard-Jones potential is a variant the more well known Lennard-Jones model (or from a different point of view, a particular case of the Mie potential). The potential is given by [1]:
![{\displaystyle \Phi _{12}(r)=\epsilon \left({\frac {n}{n-6}}\right)\left({\frac {n}{6}}\right)^{\frac {6}{n-6}}\left[\left({\frac {\sigma }{r}}\right)^{n}-\left({\frac {\sigma }{r}}\right)^{6}\right]}](https://wikimedia.org/api/rest_v1/media/math/render/svg/9f27dcbb376b2716bf1ca362c9d484c709b691f7)
where
- is the intermolecular pair potential between two particles, "1" and "2".
- is the diameter (length), i.e. the value of at which
- is the well depth (energy)
Melting point
An approximate method to locate the melting point is given in [2]. See also [3].
Shear viscosity
References
- ↑ Alauddin Ahmed and Richard J. Sadus "Solid-liquid equilibria and triple points of n-6 Lennard-Jones fluids", Journal of Chemical Physics 131 174504 (2009)
- ↑ Sergey A. Khrapak, Manis Chaudhuri, and Gregor E. Morfill "Freezing of Lennard-Jones-type fluids", Journal of Chemical Physics 134 054120 (2011)
- ↑ J. M. G. Sousa, A. L. Ferreira, and M. A. Barroso "Determination of the solid-fluid coexistence of the n − 6 Lennard-Jones system from free energy calculations", Journal of Chemical Physics 136 174502 (2012)
- ↑ Stephanie Delage-Santacreu, Guillaume Galliero, Hai Hoang, Jean-Patrick Bazile, Christian Boned and Josefa Fernandez "Thermodynamic scaling of the shear viscosity of Mie n-6 fluids and their binary mixtures", Journal of Chemical Physics 142 174501 (2015)
- Related reading