Viscous Dissipation Effects on Unsteady Natural Convective Flow Past an Infinite Vertical Plate with Uniform Heat and Mass Flux

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Abstract: Viscous dissipation effects on the unsteady natural convective flow over an infinite vertical plate embedded in a porous medium subject to uniform heat and mass flux is investigated. A variable suction velocity is assumed to be normal to the plate. The governing unsteady, non-linear, coupled partial differential equations are reduced to ordinary differential equations by the method of perturbation. The effects of Prandtl number, Schmidt number, permeability parameter, thermal Grashof number, mass Grashof number, Eckert number on velocity, temperature and concentration are analyzed graphically. It is observed that the fluid velocity increases with an increase in porous medium parameter. An increase in viscous dissipation effects leads to an increase in fluid velocity and temperature. An increase in the combined effects of Prandtl number and Eckert number decelerates the fluid temperature. The fluids considered for the study are hydrogen, helium, oxygen, water vapor, carbon dioxide and ethyl benzene.

WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 9, 2014, Art. #7

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P. Loganathan, C. Sivapoornapriya, "Viscous Dissipation Effects on Unsteady Natural Convective Flow Past an Infinite Vertical Plate with Uniform Heat and Mass Flux," WSEAS Transactions on Heat and Mass Transfer, vol. 9, pp. 63-73, 2014, DOI:
P. Loganathan, C. Sivapoornapriya. Viscous Dissipation Effects on Unsteady Natural Convective Flow Past an Infinite Vertical Plate with Uniform Heat and Mass Flux. WSEAS Transactions on Heat and Mass Transfer. 2014;9:63-73.
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