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Akademický článek
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Publikováno v:
Molecular Physics. 104:503-513
The potential energy surface for trimers of hydrogen fluoride is examined for multiple arrangements of the three-molecule cluster. Several established approaches to model the potential energy are examined, including a strictly pairwise additive poten
Autor:
S. J. Wierzchowski, P. A. Monson
Publikováno v:
Molecular Physics. 102:2071-2079
The paper presents calculations of the properties of binary mixtures of hard spheres and directionally associating hard spheres, a simple model for mixtures of nonpolar molecules with water that was developed by Nezbeda and his coworkers. Extensive r
Autor:
David A. Kofke, Scott J. Wierzchowski
Publikováno v:
Industrial & Engineering Chemistry Research. 43:218-227
Isothermal−isobaric Monte Carlo molecular simulations are performed to estimate the vapor-phase fugacity coefficients of hydrogen fluoride and water in their mixtures, covering the full range of composition at experimentally known saturation temper
Autor:
Scott J. Wierzchowski, David A. Kofke
Publikováno v:
The Journal of Physical Chemistry B. 107:12808-12813
We apply isothermal-isobaric Monte Carlo molecular simulation to measure the vapor-phase fugacity coefficients and equation of state of three fixed-charge models of water: SPC/E, MSPC/E, and TIP3P. State conditions correspond to the experimental vapo
Publikováno v:
The Journal of Chemical Physics. 119:7365-7371
A molecular-orbital derived polarizable potential function is developed to model liquid and supercritical fluid hydrogen fluoride. The model is based on a novel application of a combined quantum-mechanical and molecular-mechanical (QM/MM) approach, w
Autor:
David A. Kofke, Scott J. Wierzchowski
Publikováno v:
The Journal of Chemical Physics. 119:6092-6099
Several variations of ab initio based molecular models for hydrogen fluoride (HF) are examined by Monte Carlo molecular simulation to determine their bulk-phase properties. The models are taken from the literature, and represent fits of functional fo
Autor:
David A. Kofke, Scott J. Wierzchowski
Publikováno v:
Fluid Phase Equilibria. :249-256
We present a method for accelerating convergence of Monte Carlo (MC) simulations of associating fluids and describe its application to a model for hydrogen fluoride. The new bias scheme preferentially attempts MC trials that lead to unbonding–bondi
Autor:
David A. Kofke, Scott J. Wierzchowski
Publikováno v:
The Journal of Chemical Physics. 114:8752-8762
We present a method for accelerating convergence of Monte Carlo simulations of associating fluids. Such fluids exhibit strong, short-ranged, orientation-specific intermolecular attractions which are difficult to sample via conventional molecular simu