Title: Magnetohydrodynamic Unsteady Natural-Convection Flow of a Newtonian Fluid in the Presence of Consistent Chemical Reaction
Abstract: The effects of variable thermo physical parameters on the natural convective heat and mass transfer of a viscous incompressible, gray absorbing-emitting fluid flowing past an impulsively started moving vertical plate under the action of transversely applied magnetic field in the presence of chemical reaction was considered. The governing boundary-layer equations are formulated with appropriate boundary conditions. The Roseland diffusion approximation is used to analyze the radiative heat flux and it is appropriate for non-Scattering media. The governing boundary layer equations were simplified and non-dimensionalized. The dimensionless equations were discretized and then solved using the Crank-Nicolson’s method. The effects of variable thermo physical parameters which are: Magnetic field, dissipation function, Prandtl number, radiation-conduction parameter, thermal Grashof number, species Grashof number, Schmidt number, Reynolds number, chemical reaction parameter and Darcy number are considered on the dimensionless velocity, temperature and concentration profile. It was discovered that Velocity profile decreases with increase in Magnetic field, conduction radiation parameter, Schmidt number, prandtl number, Eckert number and chemical reaction parameter while it decreases with increase in Grashof number. Temperature profile increases with increase in Magnetic field, Schmidt number, Eckert number and chemical reaction parameter while it decreases with increase in conduction radiation parameter, prandtl number, Eckert number, Grashof number and Darcy number. Concentration profile increases with increase in Magnetic field and Conduction Radiation parameter while it decreases with increase in Schmidt number, Grashof number and chemical reaction parameter.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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