Entropy 2010, 12(8), 1867-1884; https://doi.org/10.3390/e12081867
Second Law Analysis of Viscoelastic Fluid over a Stretching Sheet Subject to a Transverse Magnetic Field with Heat and Mass Transfer
1
Department of Mechanical Engineering, Faculty of Sciences and Technology and Matter’s Sciences, University Kasdi Merbah, P.O. 511, Ouargla, 30 000, Algeria
2
Department of Process Engineering, Faculty of Sciences and Technology and Matter’s Sciences, University Kasdi Merbah, P.O. 511, Ouargla, 30 000, Algeria
*
Author to whom correspondence should be addressed.
Received: 26 June 2010 / Accepted: 25 July 2010 / Published: 28 July 2010
Abstract
This paper concerns the second law analysis of a viscoelastic fluid over a stretching sheet subject to a transverse magnetic field with heat and mass transfer. The velocity, temperature and concentration profiles are obtained analytically using Kummer’s functions. The effects of the magnetic and viscoelastic parameters on both the longitudianl and the transverse velocities are investigated. The influence of Prandt number, the magnetic parameter and the heat source/sink parameter on the temperature is analysed. The concentration and its variations with the Schmidt number and the magnetic parameter is presented as well. The velocity, the temperature and the concentration profiles are used to compute the entropy generation number. This number is graphed and studied as function of the magnetic parameter, the Prandtl number, The Schmidt number, the Reynolds number, the dimensionless group, the Hartmann number, the ratio of the dimensionless concentration difference to the dimensionless temperature difference and the constant parameter. View Full-TextKeywords:
heat transfer; magnetic field; mass transfer; second law; stretching surface; viscoelastic fluid
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Aïboud, S.; Saouli, S. Second Law Analysis of Viscoelastic Fluid over a Stretching Sheet Subject to a Transverse Magnetic Field with Heat and Mass Transfer. Entropy 2010, 12, 1867-1884.