Laplace Technique on Magnetohydrodynamic Radiating and Chemically Reacting Fluid over an Infinite Vertical Surface

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Author(s) Sahin Ahmed | Dimbeswar Kalita
Pages 224-233
Volume 1
Issue 5
Date May, 2012
Keywords Thermal radiation; Chemical reaction; MHD; shear stress and Variable Mass Diffusion.

An analysis is carried out to study the nonlinear MHD flow with heat and mass transfer characteristics of an incompressible, viscous, electrically conducting and Boussinesq fluid over a vertical oscillating porous permeable plate in presence of homogeneous chemical reaction of first order and thermal radiation effects. The fluid considered here is a gray, absorbing/emitting radiation, but a non-scattering medium. At time t > 0, the plate temperature and concentration levels near the plate raised linearly with time t. An approximate numerical solution for the flow problem has been obtained by solving the governing boundary layer equations using Laplace transform technique. It has been found that, when the chemical reaction parameter (K_r) increased, the fluid velocities as well as concentration profiles were decreased. An increase in conduction-radiation parameter (R_a) is found to escalate temperatures and shear stress in the regime. Applications of the study arise in materials processing and solar energy collector systems.

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