This work deals with code development using a finite volume schemefor the liquid flow and heat transfer in microchannels, with streamingpotential as the driving force. The concept of the electric double layer(EDL) was introduced to explain the microscale deviation. Governingequations were derived for fully developed rectangular microchannels'pressure-driven flows. For realistic modeling of the problems, aconjugate analysis, that solves both the solid and liquid regions, wasconducted. An additional source term resulting from the EDL effects wasintroduced in the conventional momentum equation, thereby modifying theflow and heat transfer characteristics. Analysis concerning the effectsof ionic concentration, zeta potential and channel dimensions wereincluded. The computed results reveal significant deviations in thevelocity and temperature profiles under EDL effects. Predicted frictionfactors and Nusselt numbers were compared for both EDL and nonEDLconsiderations. Stronger deviations were observed as the aspect ratiodecreases, indicating the role of EDL effects in microscale liquid flow
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