Dissipative Particle Dynamics Simulations of Domain Growth and Phase Separation in Binary Immiscible Fluids
writer：Ying Zhao, Hong Liu, Zhong-Yuan Lu*, Chia-Chung Sun
keywords：Dissipative Particle Dynamics Simulations
source：期刊
specific source：Chinese Journal of Chemical Physics Volume: 21 Issue: 5 Pages: 451-456 Published: 2008
Issue time：2008年
It was investigated that the domain growth processes of spinodal decomposition with different quenching depth in two and three dimensional binary immiscible fluids by using parallel dissipative particle dynamics simulations. In two dimensions, the dynamic scaling exponent 1/2 for coalescence and 2/3 for inertial regimes in the shallow quench and strong finite size effects in the cases of deep quenching were obtained. In three dimensions, it was used that the diffusive regime with exponent n = 1/3 in the shallow quench and the inertial hydrodynamicregime with n = 2/3 for different quenches. The viscous effects are not clearly reflected, showingn = 1/2 in both shallow and deep quenches in this time period, due to the soft nature of interaction potential adopted in dissipative particle dynamics.