ACTIVATION ENERGY EFFECT ON MHD CONVECTIVE MAXWELL NANOFLUID FLOW WITH CATTANEO-CHRISTOVE HEAT FLUX OVER A POROUS STRETCHING SHEET

Abstract

The current article investigates the heat and mass transfer of convective magnetohydrodynamics (MHD) Maxwell nanofluid flow over a porous stretching sheet with Cattaneo-Christove heat flux. The influences of heat sources, radiation, and viscous dissipation are investigated. Also, the activation energy with binary chemical reaction and suction/injection are considered into the account. The dimensional governing equations are transmitted into nondimensional form by similarity transformations. Further, the obtained mathematical model is solved numerically in MATLAB. The effects of physical parameters pertaining in flow regime are investigated through figures and tables. It is noticed that the fluid velocity drops with an increase in the magnetic field, porosity, and suction parameter. The increased Brownian motion, heat generation, and radiation improves the temperature field, while it declines with an upsurge in values of thermal relaxation time. An increasing thermophoresis and activation energy lead to an increase in the concentration, whereas the opposite trend is seen for increasing chemical reaction. The Nussult number enhances due to the larger values of thermal Grashof number, solutal Grashof number, and Biot number, whereas it declines with the escalating values of Brownian motion, thermophoresis, and Eckert number. The comparison of the present results is carried out with the published results and noted a good agreement. These findings are useful for the space technology, metal thinning, power generation, water purification in the soil, polymer extrusion, and the thermal control of heat exchangers in upcoming technologies.