The influence of channel intersection angle on droplets coalescence process

The influence of channel intersection angle on droplets coalescence process The present study investigates the influence of channel intersection angle on the droplets coalescence process using high-speed microscope and micro-PIV system. “Spontaneous coalescence” and “delayed coalescence” occur when the droplets meet at low flow rate conditions. The film drainage time and critical capillary number are organized by recording the phenomena after droplets meet at channel junctions with different intersection angles. The microchannel junction structure details are taken for the in-depth understanding of droplets coalescence process. The experimental results show that the critical capillary number for droplets coalescence decreases with the increase of channel intersection angle, and increasing two-phase flow rates and intersection angle can reduce the film drainage time. It can be concluded that reducing the intersection angle may improve the coalescence efficiency. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

The influence of channel intersection angle on droplets coalescence process

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2015 by Springer-Verlag Berlin Heidelberg
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-015-1901-2
Publisher site
See Article on Publisher Site

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