Numerical prediction of the melting curve of n-octane



Title Numerical prediction of the melting curve of n-octane
Author(s) James M. Polson, D. Frenkel
Journal Journal of Chemical Physics
Date 1999
Volume 111
Issue 4
Start page 1501
End page 1510
Abstract We compute the melting curve of n-octane using Molecular Dynamics simulations with a realistic all-atom molecular model. Thermodynamic integration methods are used to calculate the free energy of the system in both the crystalline solid and isotropic liquid phases. The Gibbs-Duhem integration procedure is used to calculate the melting curve, starting with an initial point obtained from the free energy calculations. The calculations yield quantitatively accurate results: in the pressure range of 0-100 MPa, the calculated melting curve deviates by only 3 K from the experimental curve. This deviation falls just within the range of uncertainty of the calculations. (C) 1999 American Institute of Physics. [S0021-9606(99)52128-4].
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