Irreversibility analysis for a mixed convective flow of a reactive couple stress fluid flow through channel saturated porous materials

Abstract

The present work examines the effect of temperature-dependent fluid density on the reactive couple stress fluid flowing steadily in a vertical channel saturated with porous materials. The thermal effect gave rise to a linked differential system of equations. In the dimensionless form, the boundary-valued problems (BVP) are uncoupled and solved by using Adomian decomposition method (ADM). The solutions are used to obtain expressions for entropy generation and Bejan heat irreversibility number in the porous medium. The relevant fluid parameters are varied and discussed physically. The present result shows good agreement with the previously obtained result when buoyancy force is neglected. The present study is relevantal in the thermal treatment of combustible fluids in chemical and petro-chemical engineering.

Entropy generation effect of a buoyancy force on hydromagnetic heat generating couple stress fluid through a porous medium with isothermal boundaries

“…The last terms in equations ( 1) and ( 2) respectively show the remarkable attribute of buoyancy force on the fluid motion as done in [3,5] and the influence of internal heat generation as mentioned in [3,11,18,26,34]. Additionally, the expression for the degree of disturbance of the couple stress liquid under the domination of the attractive magnetic strength in dimensional rate denoted can be composed as recorded in [10]…”

“…For example, an extrusion of polymer liquids, the refreshing of metallic plates in a shower, to reference a few as described in [4]. Other examples to show the significant account of couple stress fluid include [5] where the examination researched the effects of temperature -dependent fluid density on the reactive couple pressure liquid which is active in a vertical stream within permeable substances and of recent, [6] investigated the survey on the entropy generation of a reactive hydromagnetic couple stress fluid flow over a soaked permeable stream. Other literatures on couple stress fluid include [7,8,9,10].…”

“…Additionally, the influence of other multiple physical properties on fluid flow has been investigated by researchers. In order to show these, few researchers are mentioned in this investigation such as in magnetic field strength studied in [6,15,16], porous permeability materials as described in [16,17,18,19], viscosity mentioned in [20,21,22], thermal radiation in [23,24], buoyancy force in [1,3,5,25] and other thermophysical properties which affect fluid flow and heat transfer in different aspects.…”

The effects of thermal radiation on the flow of a reactive hydromagnetic heat generating couple stress fluid through a porous channel

“…As a consequence of these, Adesanya et al [4] delved into the rate of entropy generation in a reactive couple stress fluid flow through a passage saturated with porous materials. Also, Hassan et al [5] investigated the effect of temperaturedependent fluid density on a reactive couple stress fluid flowing steadily in a vertical channel saturated with porous materials. Other studies carried out lately that shows the usefulness of couple stress fluid can be found in [5][6][7][8][9][10].…”