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 F24: Microscale Flows: Complex Fluids
8:00 AM–10:10 AM,
Monday, November 19, 2018
Georgia World Congress Center Room: B312
Chair: Cheng Wang, Missouri University of Science and Technology
Abstract ID: BAPS.2018.DFD.F24.6
Abstract: F24.00006 : A numerical study on viscoelastic droplet migration on substrates with wetting gradients*
9:05 AM–9:18 AM
(Sun Yat-Sen University)
The study of spontaneous motions of a droplet migrating due to substrate wettability gradient is extended to viscoelastic fluids using numerical simulations based on the multiphase-field model of OpenFOAM with new boundary conditions, ensuring correct contact angles at multiphase junctions. The migration speed and the shape of the droplet, dependent on the Weissenberg number, are examined along with other parameters studied previously. For the parameter ranges studied it is found that the fluid elasticity affects the droplet motion indirectly more by changing the droplet footprint than other ways.
*This work is funded by the grant NRF-2018R1A2B3001246 of the National Research Foundation of Korea.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.F24.6
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