Radiation and Chemical Reaction Effects on Unsteady MHD Free Convection Parabolic Flow Past an Infinite Isothermal Vertical Plate with Viscous Dissipation

Abstract

The numerical investigation of the effects of radiation and chemical reaction on an unsteady MHD free convection flow with a parabolic starting motion of an infinite isothermal vertical porous plate taking into account the viscous dissipation effect has been carried out. The fluid is considered a gray, absorbing emitting radiation but a non-scattering medium. The dimensionless governing equations for this investigation are solved numerically by applying the Ritz finite element method. Numerical results for the velocity profiles, temperature profiles and concentration profiles as well as the skin-friction are presented through graphs and tables for different values of the physical parameters involved. Results obtained show a decrease in the temperature and velocity in the boundary layer as the radiation parameter increased. The velocity increases with an increase in the thermal and mass Grashof numbers and decreases with an increase in the magnetic parameter. Further, the concentration and velocity decreases with increasing the Schmidt number and chemical reaction parameter. These findings are in very good agreement with the studies reported earlier.

Numerical study on the parabolic flow of MHD fluid past a vertical plate in a porous medium

“…Under the usual Boussinesq's approximation and boundary layer approximations, the unsteady parabolic starting motion is governed by the following equations 12,15 :…”

Aspects of parabolic motion of MHD fluid flow past a vertical porous plate with cross‐diffusion effects

“…Mass transfer effects on an unsteady MHD free convective flow of an incompressible viscous dissipative fluid past an infinite vertical porous plate were studied by Prabhakar Reddy. 14 Prabhakar Reddy 15 investigated radiation and chemical reaction effects on unsteady MHD free convection parabolic flow past an infinite isothermal vertical plate with viscous dissipation. Shaw et al 16 examined MHD double-diffusive thermosolutal Marangoni convection non-Newtonian Casson nanofluid flow over a permeable stretching sheet.…”

“…On the basis of the importance, the survey mentioned above is done and noticed some points which are not considered. Hence the study of Prabhakar Reddy 15 is taken and extended. The novelty of this analysis is the accumulation of heat generation, radiation absorption, Dufour effect, and thermal diffusion along with exponentially varying temperature and concentration.…”

Radiation and chemical reaction effects on unsteady MHD free convention mass transfer fluid flow in a porous plate

“…Afzal Hoqet et al (15) have studied the error analysis of heat conduction Partial Differential Equations. Prabhakar reddy et al (16) investigated chemical reaction, Radiation effects lying on infinite isothermal vertical plate. Sweta et al (17) analyzed the heat absorption effects on MHD.…”