Combined Heat and Mass Transfer by Mixed Convection MHD Flow Along a Porous Plate With Chemical Reaction in Presence of Heat Source

Joaqu韓 Zueco; Sahin Ahmed

doi:10.3879/j.issn.1000-0887.2010.10.003

Volume 31 Issue 10

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Joaqu韓 Zueco, Sahin Ahmed. Combined Heat and Mass Transfer by Mixed Convection MHD Flow Along a Porous Plate With Chemical Reaction in Presence of Heat Source[J]. Applied Mathematics and Mechanics, 2010, 31(10): 1160-1171. doi: 10.3879/j.issn.1000-0887.2010.10.003

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Combined Heat and Mass Transfer by Mixed Convection MHD Flow Along a Porous Plate With Chemical Reaction in Presence of Heat Source

doi: 10.3879/j.issn.1000-0887.2010.10.003

Joaqu韓 Zueco¹,
Sahin Ahmed²

1.
ETS Ingenier韆 Industrial, Departamento de Ingenier韆 Térmicay Fluidos, Universidad Politécnica de Cartagena, 30202, Cartagena (Murcia), Spain;
Fluid Dynamics Research, Department of Mathematics, Goalpara College, Goalpara, Assam-783101, India

Received Date: 1900-01-01
Rev Recd Date: 2010-07-28
Publish Date: 2010-10-15

Abstract

Abstract

An exact and numerical solution to the problem of a steady mixed convective MHD flow of an incompressible viscous electrically conducting fluid past an infinite vertical porous plate with combined heat and mass transfer was presented.A uniform magnetic field was assumed to be applied transversely to the direction of the flow, taking into account the induced magnetic field with viscous and magnetic dissipations of energy.The porous plate was subjected to a constant suction velocity as well as uniform mixed stream velocity.The governing equations were solved by perturbations technique and numerical method.The analytical expressions for the velocity field, temperature field, induced magnetic field, skin-friction and the rate of heat transfer at the plate were obtained.The numerical results were demonstrated graphically for the various values of the parameters involved in the problem.The effects of the Hartmann number, the chemical reaction parameter, the magnetic Prandtl number, and the other parameters involved on the velocity field, temperature field, concentration field and induced magnetic field from the plate to the fluid were discussed.An increase in heat source/sink or Eckert number was found to strongly enhance fluid velocity values.The induced magnetic field along x-direction increases with the increase in Hartmann number, magnetic Prandtl number, heat source/sink and the viscous dissipation.However, it is found that the flow velocity, fluid temperature, and induced magnetic field decrease with the increase in destructive chemical reaction(K0).Applications of the study arise in thermal plasma reactor modelling, electromagnetic induction, magnetohydrodynamic transport phenomena in chromatographic systems and magnetic field control of materials processing.
- MHD,
- perturbation technique,
- network simulation method,
- mixed convection,
- Eckert number,
- induced magnetic field,
- viscous dissipation,
- heat source/sink

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References(21)

References

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