Deformation and breakup dynamics of droplets within a tapered channel

被引：9
|
作者：
Montessori, Andrea [1 ]
Rocca, Michele La [2 ]
Prestininzi, Pietro [2 ]
Tiribocchi, Adriano [1 ]
Succi, Sauro [1 ,3 ,4 ]
机构：
[1] CNR, Ist Applicazioni Calcolo, Via Taurini 19, I-00185 Rome, Italy
[2] Univ Roma TRE, Dipartimento Ingn, Via Vito Volterra 62, I-00146 Rome, Italy
[3] Ist Italiano Tecnol, Ctr Life Nanosci La Sapienza, Viale Regina Elena 295, I-00161 Rome, Italy
[4] Harvard John A Paulson Sch Engn & Appl Sci, Inst Appl Computat Sci, Cambridge, MA 02138 USA
来源：
PHYSICS OF FLUIDS | 2021年 / 33卷 / 08期
基金：
欧洲研究理事会;
关键词：
BOLTZMANN; MODEL;
D O I：
10.1063/5.0057501
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, we numerically investigate the breakup dynamics of droplets in an emulsion flowing in a tapered microchannel with a narrow constriction. The mesoscale approach for multicomponent fluids with near contact interactions is shown to capture the deformation and breakup dynamics of droplets interacting within the constriction, in agreement with experimental evidence. In addition, it permits us to investigate in detail the hydrodynamic phenomena occurring during breakup stages. Finally, a suitable deformation parameter is introduced and analyzed to characterize the state of deformation of the system by inspecting pairs of interacting droplets flowing in the narrow channel.
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收藏
页数：8
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