Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Numerical Study of Electro-Osmotic Fluid Flow and Vortex Formation

Full text
Author(s):
Bezerra, Wesley De Souza [1] ; Castelo, Antonio [2] ; Afonso, Alexandre M. [3]
Total Authors: 3
Affiliation:
[1] Fundacao Univ Fed Grande Dourados, FACET, Fac Ciencias Exatas & Tecnol, Km 12, BR-79804970 Dourados, MS - Brazil
[2] Univ Sao Paulo, ICMC, Dept Matemat Aplicada & Estat, Av Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos - Brazil
[3] Univ Porto, Fac Engn, Dept Engn Mecan, CEFT, P-4200465 Porto - Portugal
Total Affiliations: 3
Document type: Journal article
Source: MICROMACHINES; v. 10, n. 12 DEC 2019.
Web of Science Citations: 0
Abstract

The phenomenon of electro-osmosis was studied by performing numerical simulations on the flow between parallel walls and at the nozzle microchannels. In this work, we propose a numerical approximation to perform simulations of vortex formation which occur after the passage of the fluid through an abrupt contraction at the microchannel. The motion of the charges in the solution is described by the Poisson-Nernst-Planck equations and used the generalized finite differences to solve the numerical problem. First, solutions for electro-osmotic flow were obtained for the Phan-Thien/Thanner model in a parallel walls channel. Later simulations for electro-osmotic flow were performed in a nozzle. The formation of vortices near the contraction within the nozzle was verified by taking into account a flow perturbation model. (AU)

FAPESP's process: 13/07375-0 - CeMEAI - Center for Mathematical Sciences Applied to Industry
Grantee:Francisco Louzada Neto
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC