Entropy 2010, 12(6), 1391-1417; doi:10.3390/e12061391
Article

Effect of an External Oriented Magnetic Field on Entropy Generation in Natural Convection

1email, 1,* email, 2email and 1email
Received: 28 April 2010; Accepted: 28 May 2010 / Published: 28 May 2010
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.
Abstract: The influence of an external oriented magnetic field on entropy generation in natural convection for air and liquid gallium is numerically studied in steady-unsteady states by solving the mass, the momentum and the energy conservation equations. Entropy generation depends on five parameters which are: the Prandtl number, the irreversibility coefficients, the inclination angle of the magnetic field, the thermal Grashof and the Hartmann numbers. Effects of these parameters on total and local irreversibilities as well as on heat transfer and fluid flow are studied. It was found that the magnetic field tends to decrease the convection currents, the heat transfer and entropy generation inside the enclosure. Influence of inclination angle of the magnetic field on local irreversibility is then studied.
Keywords: heat transfer; convection; magnetic field; cavity; entropy generation; numerical methods
PDF Full-text Download PDF Full-Text [3829 KB, uploaded 28 May 2010 13:28 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

El Jery, A.; Hidouri, N.; Magherbi, M.; Brahim, A.B. Effect of an External Oriented Magnetic Field on Entropy Generation in Natural Convection. Entropy 2010, 12, 1391-1417.

AMA Style

El Jery A, Hidouri N, Magherbi M, Brahim AB. Effect of an External Oriented Magnetic Field on Entropy Generation in Natural Convection. Entropy. 2010; 12(6):1391-1417.

Chicago/Turabian Style

El Jery, Atef; Hidouri, Nejib; Magherbi, Mourad; Brahim, Ammar Ben. 2010. "Effect of an External Oriented Magnetic Field on Entropy Generation in Natural Convection." Entropy 12, no. 6: 1391-1417.

Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert