Nonlinear Heat Source/Sink and Activation Energy Assessment in Double Diffusion Flow of Micropolar (Non-Newtonian) Nanofluid with Convective Conditions

Abstract

The enhancement in heat transfer based on the utilization of nanoparticles is an attractive research area, and many scientists have intended their interest on this topic. With progressive features, the nanofluid reflects many applications in thermal engineering, heat exchangers, cooling phenomenon, magnetic cell separation, energy production, hyperthermia, etc. Following to the motivating significances of nano-materials, current research endorses the double diffusion thermal assessment of viscoelastic nanofluid with dynamic applications of activation energy and nonlinear mixed convection. The heat source/sink phenomenon with nonlinear relations is also incorporated. The stretched porous configuration caused the uniform flow pattern. The viscoelastic behavior of non-Newtonian fluid is inspected with applications of generalized micropolar fluid model. The primary motivations for selecting generalized micropolar fluid model are justified as it captures micropolar fluid, second-grade fluid, and viscous fluid results simultaneously. The convective transport of nanofluid has been examined via utilizing the convective temperature boundary conditions. The model equations for assumed flow model are reduced into dimensionless forms. The analytical solution for the modeled flow problem is obtained by using homotopy analysis scheme. The physical transport of flow parameters is graphically accessed. The numerical data are originated by using the relations of local Nusselt number, Sherwood number, and the motile microorganism density number. It is noted that nanofluid temperature improves with vortex viscosity parameter and viscoelastic parameter, while it increases with modified Dufour number. The solutal concentration profile grows up with Dufour Lewis number, while it decays with regular Lewis number. Moreover, the wall shear stress increases with viscoelastic parameter and Hartmann number.