Steady-State Homogeneous Nucleation and Growth of Water Droplets: Extended Numerical Treatment
arXiv:1210.0843 · doi:10.1021/jp304830e
Abstract
The steady-state homogeneous vapor-to-liquid nucleation and the succeeding liquid droplet growth process are studied for water system by means of the coarse-grained molecular dynamics simulations with the mW-model suggested originally in [Molinero, V.; Moore, E. B. \textit{J. Phys. Chem. B} \textbf{2009}, \textit{113}, 4008-4016]. The investigation covers the temperature range and the system's pressure atm. The thermodynamic integration scheme and the extended mean first passage time method as a tool to find the nucleation and cluster growth characteristics are applied. The surface tension is numerically estimated and is compared with the experimental data for the considered temperature range. We extract the nucleation characteristics such as the steady-state nucleation rate, the critical cluster size, the nucleation barrier, the Zeldovich factor; perform the comparison with the other simulation results and test the treatment of the simulation results within the classical nucleation theory. We found that the liquid droplet growth is unsteady and follows the power law. At that, the growth laws exhibit the features unified for all the considered temperatures. The geometry of the nucleated droplets is also studied.
arXiv comment25 pages, 7 figures, 1 table
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