TY - JOUR
T1 - Immiscible impact dynamics of droplets onto millimetric films
AU - Shaikh, S.
AU - Toyofuku, G.
AU - Hoang, R.
AU - Marston, J. O.
N1 - Publisher Copyright:
© 2017, Springer-Verlag GmbH Germany, part of Springer Nature.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The impact of liquid droplets onto a film of an immiscible liquid is studied experimentally across a broad range of parameters [Re= O(10 1- 10 3) , We= O(10 2- 10 3) ] with the aid of high-speed photography and image analysis. Above a critical impact parameter, Re1 / 2We1 / 4≈ 100 , the droplet fragments into multiple satellite droplets, which typically occurs as the result of a fingering instability. Statistical analysis indicates that the satellite droplets are approximately log-normally distributed, in agreement with some previous studies and the theoretical predictions of Wu (Prob Eng Mech 18:241–249, 2003). However, in contrast to a recent study by Lhuissier et al. (Phys Rev Lett 110:264503, 2013), we find that it is the modal satellite diameter, not the mean diameter, that scales inversely with the impact speed (or Weber number) and that the dependence is dmod∼ We- 1 / 4.
AB - The impact of liquid droplets onto a film of an immiscible liquid is studied experimentally across a broad range of parameters [Re= O(10 1- 10 3) , We= O(10 2- 10 3) ] with the aid of high-speed photography and image analysis. Above a critical impact parameter, Re1 / 2We1 / 4≈ 100 , the droplet fragments into multiple satellite droplets, which typically occurs as the result of a fingering instability. Statistical analysis indicates that the satellite droplets are approximately log-normally distributed, in agreement with some previous studies and the theoretical predictions of Wu (Prob Eng Mech 18:241–249, 2003). However, in contrast to a recent study by Lhuissier et al. (Phys Rev Lett 110:264503, 2013), we find that it is the modal satellite diameter, not the mean diameter, that scales inversely with the impact speed (or Weber number) and that the dependence is dmod∼ We- 1 / 4.
UR - http://www.scopus.com/inward/record.url?scp=85037043712&partnerID=8YFLogxK
U2 - 10.1007/s00348-017-2461-4
DO - 10.1007/s00348-017-2461-4
M3 - Article
AN - SCOPUS:85037043712
VL - 59
JO - Experiments in Fluids
JF - Experiments in Fluids
SN - 0723-4864
IS - 1
M1 - 7
ER -