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 L27: Surface Tension Effects: Interfacial Phenomena I
4:05 PM–6:28 PM,
Monday, November 19, 2018
Georgia World Congress Center
Room: B315
Chair: Joshua Bostwick, Clemson University
Abstract ID: BAPS.2018.DFD.L27.10
Abstract: L27.00010 : Thermocapillary dipole in a Hele Shaw configuration*
6:02 PM–6:15 PM
Presenter:
Valeri Frumkin
(TECHNION)
Authors:
Valeri Frumkin
(TECHNION)
Moran Bercovici
(TECHNION)
We present a theoretical and experimental study of thermocapillary flow in a Hele-Shaw cell containing a circular opening in the upper surface, and subjected to a linear temperature gradient. Under the assumption of shallowness (i.e. the depth of the reservoir is much smaller than its radius) we obtain a solution corresponding to a doublet flow (dipole) in the Hele-Shaw cell, providing good qualitative agreement with experimental results. We demonstrate how a superposition of dipoles can be applied for two-dimensional flow patterning, and how a confined dipole can act as a thermocapillary motor for driving liquids in microfluidic circuits. In addition, we show how the principles behind the thermocapillary dipole can be applied in order to drive thermocapillary surface swimmers on fluid-liquid interfaces
*Funded by the European Research Council (ERC) under the European Union’s Horizon 2020 Research and Innovation Programme, Grant Agreement No. 678734 (MetamorphChip).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.L27.10
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