Histogram-Free Reweighting with Grand Canonical Monte Carlo: Post-simulation Optimization of Non-bonded Potentials for Phase Equilibria
Histogram-Free Reweighting with Grand Canonical Monte Carlo: Post-simulation Optimization of Non-bonded Potentials for Phase Equilibria
复制标题
使用大正则蒙特卡罗进行无直方图重加权:相平衡非键势的仿真后优化
DOI:
10.1021/acs.jced.8b01232
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发表时间:
2019
影响因子:
--
通讯作者:
Shirts, Michael R.
中科院分区:
文献类型:
--
作者:
Messerly, Richard A.;Soroush Barhaghi, Mohammad;Potoff, Jeffrey J.;Shirts, Michael R.
Histogram reweighting (HR) is a standard approach for converting grand canonical Monte Carlo (GCMC) simulation output into vapor–liquid coexistence properties (saturated liquid density, ρliqsat, saturated vapor density, ρvapsat, saturated vapor pressures,Pvapsat, and enthalpy of vaporization,ΔHv). We demonstrate that a histogram-free reweighting approach, namely, the Multistate Bennett Acceptance Ratio (MBAR), is similar to the traditional HR method for computing ρliqsat, ρvapsat,Pvapsat, andΔHv. The primary advantage of MBAR is the ability to predict phase equilibria properties for an arbitrary force field parameter set that has not been simulated directly. Thus, MBAR can greatly reduce the number of GCMC simulations that are required to parameterize a force field with phase equilibria data. Four different applications of GCMC-MBAR are presented in this study. First, we validate that GCMC-MBAR and GCMC-HR yield statistically indistinguishable results for ρliqsat, ρvapsat,Pvapsat, andΔHvin a limiting test case. Second, we utilize GCMC-MBAR to optimize an individualized (compound-specific) parameter (ψ) for 8 branched alkanes and 11 alkynes using the Mie Potentials for Phase Equilibria (MiPPE) force field. Third, we predict ρliqsat, ρvapsat,Pvapsat, andΔHvfor force fieldjby simulating force fieldi, whereiandjare common force fields from the literature. In addition, we provide guidelines for determining the reliability of GCMC-MBAR predicted values. Fourth, we develop and apply a post-simulation optimization scheme to obtain new MiPPE non-bonded parameters for cyclohexane (ϵCH2, σCH2, and λCH2).
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影响因子:
1.7
作者:
Barhaghi, Mohammad Soroush;Mick, Jason R.;Potoff, Jeffrey J.
通讯作者:
Potoff, Jeffrey J.
影响因子:
2.6
作者:
M. Yiannourakou;P. Ungerer;V. Lachet;V. Lachet;B. Rousseau;J. Teuler
通讯作者:
J. Teuler
影响因子:
--
作者:
I. Nezbeda
通讯作者:
I. Nezbeda
DOI:
10.1063/1.4928865
发表时间:
2015
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Richard A. Messerly;R. L. Rowley;T. Knotts;W. Wilding
通讯作者:
W. Wilding
影响因子:
4.4
作者:
J. Shah;E. Maginn
通讯作者:
E. Maginn