Second law analysis for couple stress fluid flow through a porous medium with constant heat flux

Abstract

In the present work, entropy generation in the flow and heat transfer of couple stress fluid through an infinite inclined channel embedded in a saturated porous medium is presented. Due to the channel geometry, the asymmetrical slip conditions are imposed on the channel walls. The upper wallofthechannelissubjectedtoaconstantheatfluxwhilethelowerwallisinsulated. Theequations governing the fluid flow are formulated, non-dimensionalized and solved by using the Adomian decomposition method. The Adomian series solutions for the velocity and temperature fields are thenusedtocomputetheentropygenerationrateandinherentheatirreversibilityintheflowdomain. The effects of various fluid parameters are presented graphically and discussed extensively.