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 D07: Electrokinetics: General
2:30 PM–4:40 PM,
Sunday, November 18, 2018
Georgia World Congress Center
Room: B212
Chair: William Ristenpart, University of California, Davis
Abstract ID: BAPS.2018.DFD.D07.6
Abstract: D07.00006 : A numerical study on the effect of the electrode voltage on the near-electrode layers in leaky dielectric liquids*
3:35 PM–3:48 PM
Presenter:
Babak Kashir
(Univ of Illinois - Chicago)
Authors:
Babak Kashir
(Univ of Illinois - Chicago)
Anthony Perri
(Univ of Illinois - Chicago)
Alexander Yarin
(Univ of Illinois - Chicago)
Farzad Mashayek
(Univ of Illinois - Chicago)
The effect of the electrode voltage on the near-electrode layers in leaky dielectric liquids is investigated numerically employing a code developed in OpenFOAM. The Frumkin-Butler-Volmer kinetics responsible for the ion transfer at the electrode surface is accounted for using the experimental data for the faradaic reactions. A novel approach is proposed to calculate the compact layer thickness ramifying from the seminal Stern model. Moreover, a numerical algorithm is suggested to calculate the compact layer thickness for high values of potential applied at the electrodes. The impact of the electric potential on the thickness of the compact and polarized layers and the ionic transport are also investigated in the context of a two-dimensional microchannel flow. The polarized layer is defined as the distance from the surface of the compact layer where the absolute net charge falls to 1% of the maximum absolute value occurring near the compact layer. The electro-hydrodynamic flow in the channel is subjected to two opposite electrodes with opposite polarities resembling situations occurring in the electrostatic atomizers.
*This project was supported by National Science Foundation (NSF) GOALI Grant CBET-1505276.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.D07.6
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700