Dissipative Particle Dynamics Simulations of Domain Growth and Phase Separation in Binary Immiscible Fluids  

作　　者：Ying Zhao Hong Liu Zhong-yuan Lu Chia-chung Sun 

机构地区：[1]State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry,Jilin University, Changchun 130023, China

出　　处：《Chinese Journal of Chemical Physics》2008年第5期451-456,共6页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （No.20774036） and the Fok Ying Tung Education Foundation （No.114018）.

摘　　要：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=l/3 in the shallow quench and the inertial hydrodynamic regime with n=2/3 for different quenches. The viscous effects are not clearly reflected, showing n=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.

关 键 词：Dissipative particle dynamics Binary immiscible fluids Domain growth 

分 类 号：TE626.3[石油与天然气工程—油气加工工程]