Electroosmotic flow in a thin microchannel under the influence of some thermal electrokinetic effects

In this work, we predict for a laminar electroosmotic flow in a thin microchannel, the impact that has some non-isothermal electrokinetics effects when the Debye length and the fluid viscosity are both temperature-dependent functions. The motion of the electroosmotic flow is caused with the aid of a...

Full description

Saved in:
Bibliographic Details
Published inJournal of the Brazilian Society of Mechanical Sciences and Engineering Vol. 44; no. 3
Main Authors Ramos, E. A., Treviño, C., Méndez, F., Lizardi, J. J.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2022
Springer Nature B.V
Subjects
Debye length
Electric fields
Electrokinetic effects
Electrokinetics
Electroosmosis
Engineering
Flow velocity
Laminar flow
Mechanical Engineering
Microchannels
Ohmic dissipation
Pressure gradients
Resistance heating
Technical Paper
Temperature dependence
Velocity distribution
Variable properties
Electrokinetics effects
Joule heating
Online AccessGet full text

Cover

More Information
Summary:In this work, we predict for a laminar electroosmotic flow in a thin microchannel, the impact that has some non-isothermal electrokinetics effects when the Debye length and the fluid viscosity are both temperature-dependent functions. The motion of the electroosmotic flow is caused with the aid of an external and uniform electric field. The presence of this electric source over the fluid pattern translates into continuous action of the Joule heating, causing a non-isothermal electroosmotic flow. The influence of the above non-isothermal effects conducts to include important temperature gradients in the momentum equations such that induced pressure gradients along the microchannel are established which in turn changes drastically the velocity field. Relevant variables such as the dimensionless volumetric flow rate show different values in comparison with the purely isothermal electroosmotic flow.
ISSN:1678-5878
1806-3691
DOI:10.1007/s40430-022-03385-2