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Journal of Structural Chemistry

2013 year, number Приложение 2

Calculation of the thermodynamic characteristics of the water MONTE CARLO

A.V. Teplukhin
Institute of Mathematical Problems of Biology, Russian Academy of Sciences, Pushchino, Russia
Keywords: water, simulation, Monte Carlo, NpT, parallel computing, REMC


The Monte Carlo method and parallel computing are used to calculate the thermodynamic properties of water (density, heat capacity, compressibility, thermal expansion coefficient, and static dielectric constant) in a wide range of temperatures (from 70 K to 530 K) at constant (atmospheric) pressure. Four groups of computational experiments are carried out, each for its own model of the water molecule: TIP3P (Jorgensen et al., 1983), SPC/E (Berendsen et al., 1987), TIP4P/2005 (Abascal&Vega, 2005), and TIP5P-E (Rick, 2004). An additional calculation based on the replica exchange method is conducted for the TIP4P/2005 model. A comparison of the calculated properties of water with experimental data suggests that the TIP4P/2005 model can provide highly realistic computer simulation results for water and aqueous solutions.