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Entropy 2017, 19(3), 94; doi:10.3390/e19030094

Numerical Study of the Magnetic Field Effects on the Heat Transfer and Entropy Generation Aspects of a Power Law Fluid over an Axisymmetric Stretching Plate Structure

1
Department of Mechanical Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj 6616935391, Iran
2
Eastern Mediterranean University, Civil Engineering Department, Gazimagusa 99450, North Cyprus
3
Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran
4
Young Researchers and Elite Club, Kazerun Branch, Islamic Azad University, Kazerun 7319866451, Iran
5
Department of Aerospace Engineering, Kish International Campus, University of Tehran, Kish 79416-55665, Iran
6
Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea
7
Faculty of Engineering, Chabahar Maritime University, Chabahar 99717-56499, Iran
*
Author to whom correspondence should be addressed.
Academic Editors: Pouria Ahmadi and Behnaz Rezaie
Received: 16 December 2016 / Revised: 12 February 2017 / Accepted: 15 February 2017 / Published: 1 March 2017
(This article belongs to the Special Issue Work Availability and Exergy Analysis)

Abstract

Numerical investigation of the effects of magnetic field strength, thermal radiation, Joule heating, and viscous heating on a forced convective flow of a non-Newtonian, incompressible power law fluid in an axisymmetric stretching sheet with variable temperature wall is accomplished. The power law shear thinning viscosity-shear rate model for the anisotropic solutions and the Rosseland approximation for the thermal radiation through a highly absorbing medium are considered. The temperature dependent heat sources, Joule heating, and viscous heating are considered as the source terms in the energy balance. The non-dimensional boundary layer equations are solved numerically in terms of similarity variable. A parameter study on the Nusselt number, viscous components of entropy generation, and thermal components of entropy generation in fluid is performed as a function of thermal radiation parameter (0 to 2), Brinkman number (0 to 10), Prandtl number (0 to 10), Hartmann number (0 to 1), power law index (0 to 1), and heat source coefficient (0 to 0.1). View Full-Text
Keywords: thermal radiation; forced convection; entropy generation; viscous dissipation; power law; stretching sheet thermal radiation; forced convection; entropy generation; viscous dissipation; power law; stretching sheet
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hooshmand, P.; Gatabi, H.R.; Bagheri, N.; Pirzadeh, I.; Hesabi, A.; Abdollahzadeh Jamalabadi, M.Y.; Oveisi, M. Numerical Study of the Magnetic Field Effects on the Heat Transfer and Entropy Generation Aspects of a Power Law Fluid over an Axisymmetric Stretching Plate Structure. Entropy 2017, 19, 94.

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