Hydrodynamics of binary-fluid mixtures -An augmented Multiparticle Collison Dynamics approach

被引:11
作者
Eisenstecken, Thomas [1 ]
Hornung, Raphael
Winkler, Roland G.
Gompper, Gerhard
机构
[1] Forschungszentrum Julich, Inst Adv Simulat, Theoret Soft Matter & Biophys, D-52425 Julich, Germany
关键词
LATTICE BOLTZMANN MODEL; LIQUID-GAS; SIMULATION; SYSTEMS; EQUATION; FLOWS;
D O I
10.1209/0295-5075/121/24003
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The Multiparticle Collision Dynamics technique (MPC) for hydrodynamics simulations is generalized to binary-fluid mixtures and multiphase flows, by coupling the particle-based fluid dynamics to a Ginzburg-Landau free-energy functional for phase-separating binary fluids. To describe fluids with a non-ideal equation of state, an additional density-dependent term is introduced. The new approach is verified by applying it to thermodynamics near the critical demixing point, and interface fluctuations of droplets. The interfacial tension obtained from the analysis of the capillary-wave spectrum agrees well with the results based on the Laplace-Young equation. Phase separation dynamics follows the Lifshitz-Slyozov law. Copyright (C) EPLA, 2018
引用
收藏
页数:7
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