Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session F11: Drops I
8:00 AM–10:36 AM,
Tuesday, March 15, 2022
Room: McCormick Place W-181B
Sponsoring Unit: DFD
Chair: Siddhartha Das, University of Maryland
Abstract: F11.00001 : Inertial coalescence of a liquid drop surrounded by viscous liquid*
8:00 AM–8:12 AM
Yukina M Koga
Yukina M Koga
Here, we performed an experiment similar to  but with the viscosity contrast reversed (the drop viscosity is lower than the surrounding liquid) by using a high-speed camera and a microscope lens. As a result, we found the velocity of growing neck in the present case is governed by inertia, which we reported at the last march meeting. This time, we report a different analysis to reinforce the previous arguments for the inertial dynamics, negating the possible effects of viscosity.
 Yokota, Okumura, PNAS, 108 (2011) 6337
 Paulsen, et al., Nat. Common., 5 3182 (2014)
*JSPS KAKENHI Grant numbers JP20J10242 (Research Fellow of JSPS) and JP19H01859.
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