An in-house designed device is used to investigate the behavior of fine particles impacting the pendant charged droplet by electrostatic attraction. The results show that part of the particles bounce off the droplet surface after physical contact. Nearly half of the particles rebound when their impact angles are smaller than 85°. Due to the loose structures, particle clusters disintegrate when impacting the droplet surface, and most generated daughter particles rebound subsequently. The larger volume of particle cluster enables it to capture more free charge during its motion, which may even offset the initial polarity and result in repulsion by the charged droplet. The reentrainment caused by particle rebound and cluster disintegration or escape significantly reduces the capture efficiency of the charged droplet.
ZUO Ziwen
,
WANG Junfeng
,
HUO Yuanping
,
XU Rongbin
. Study of fine particles impacting a pendant charged droplet[J]. Journal of University of Chinese Academy of Sciences, 2017
, 34(2)
: 259
-264
.
DOI: 10.7523/j.issn.2095-6134.2017.02.021
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