Viscous coalescence of droplets: A lattice Boltzmann study

被引：33
|
作者：
Gross, M. [1 ]
Steinbach, I. [1 ]
Raabe, D. [2 ]
Varnik, F. [1 ,2 ]
机构：
[1] Ruhr Univ Bochum, ICAMS, D-44789 Bochum, Germany
[2] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany
来源：
PHYSICS OF FLUIDS | 2013年 / 25卷 / 05期
关键词：
EVAPORATION; BREAKUP;
D O I：
10.1063/1.4803178
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The coalescence of two resting liquid droplets in a saturated vapor phase is investigated by Lattice Boltzmann simulations in two and three dimensions. We find that, in the viscous regime, the bridge radius obeys a t(1/2)-scaling law in time with the characteristic time scale given by the viscous time. Our results differ significantly from the predictions of existing analytical theories of viscous coalescence as well as from experimental observations. While the underlying reason for these deviations is presently unknown, a simple scaling argument is given that describes our results well. (C) 2013 AIP Publishing LLC.
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页数：14
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