Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session M07: Microscale Flows: Emulsions
8:00 AM–9:57 AM,
Tuesday, November 20, 2018
Georgia World Congress Center
Room: B212
Chair: Myeongsub Kim, Florida Atlantic University
Abstract ID: BAPS.2018.DFD.M07.1
Abstract: M07.00001 : Microscopic Rearrangements in the Flow of Highly Polydisperse Dense Emulsions*
8:00 AM–8:13 AM
Presenter:
Yonglun Jiang
(Emory Univ)
Authors:
Yonglun Jiang
(Emory Univ)
Eric R Weeks
(Emory Univ)
We study the flow of dense polydisperse quasi-two-dimensional emulsions. In particular, we are interested in highly polydisperse samples with the largest droplets as much as ten times the size of the smallest. The droplets are confined between two parallel glass plates so that the system is quasi-2D and driven by a syringe pump. We use video microscopy to examine local rearrangements as the sample flows and we study how rearrangements differ for large and small droplets. In particular, we find the large droplets generally follow the mean flow, while the small droplets have significant nonaffine motions and move more erratically. We quantify these results using nearest neighbor changes as well as D2min (Falk & Langer, PRE 1998).
*We acknowledge the NSF CBET-1804186 for the funding.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.M07.1
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