Heat and Mass Transfer on the Unsteady MHD Flow of Chemically Reacting Micropolar Fluid with Radiation and Joule Heating

Abstract

To explore numerical simulation of transport in rheological materials processing, in the current paper, a finite element computational solution is presented for magnetohydrodynamic (MHD), incompressible, radiative and chemicallyreacting micropolar fluid flow, heat and mass transfer adjacent to a vertical porous plate embedded in a saturated homogenous porous medium. Rosseland's diffusion approximation is used to describe the radiative heat flux in the energy equation. A Darcy model is employed for the porous medium. The homogeneous chemical reaction of first order is accounted for in the mass diffusion equation. The numerical solutions of the system of non-linear partial differential equations which are rendered into non-dimensional form are obtained using a Galerkin formulation with a weighted residual scheme. The impact of Eringen coupling number, radiation-conduction number, chemical reaction parameter, plate moving velocity parameter, magnetic parameter, thermal Grashof number, species (solutal) Grashof number, permeability parameter, Eckert number on linear velocity, micro-rotation, temperature and concentration profiles. Furthermore, the influence of selected thermo-physical parameters on friction factor, surface heat transfer and mass transfer rate is also tabulated. The finite element solutions are verified with solutions from several limiting cases in the literature. Interesting features in the flow are identified and interpreted.

Hall Current and Thermal Radiation Effects on MHD Casson Nanofluid Flow Past in The Presence of Heat Source/Sink, Brownian Motion and Thermophoresis

“…Aruna et al, [33] have possessed An unsteady MHD flow of a second-grade fluid passing through a porous medium in the presence of radiation absorption exhibits Hall and ion slip effects. One dimensional unsteady MHD micropolar fluid flow with the development of Hall current was analyzed by Islam et al, [34]. The chemically reactive second grade via porous saturated space was investigated by Raghunath et al, [35] using a perturbation technique.…”

Heat and Mass Transfer Analysis on MHD Mixed Convection Flow of Radiative Chemically Heat Generating Fluid With Viscous Dissipation and Thermo-Diffusion Effect

“…Of late Ahmed et al (2017) studied the effects of chemical reaction, heat and mass transfer and viscous dissipation over a MHD flow in a vertical porous wall using perturbation method. Shamshuddin (2017) investigated the influence of heat and mass transfer on the unsteady MHD flow of chemically reacting micropolar fluid with radiation and Joule heating. It is well understood that driving potential for the phenomenon of transport of mass is not only concentration gradients, but also high temperature gradients are also one of the means.…”