THERMAL SCIENCE
International Scientific Journal
THE EFFECT OF AN EXTERNAL MAGNETIC FIELD ON THE ENTROPY GENERATION IN THREE-DIMENSIONAL NATURAL CONVECTION
ABSTRACT
A 3-D original numerical study of entropy generation in the case of liquid metal laminar natural convection in a differentially heated cubic cavity and in the presence of an external magnetic field orthogonal to the isothermal walls is carried out. The effect of this field on the various types of irreversibilities is analyzed. It was observed that in the presence of a magnetic field the generated entropy is distributed on the entire cavity and that the magnetic field limits the 3-D character of the distribution of the generated entropy.
KEYWORDS
PAPER SUBMITTED: 2009-09-06
PAPER REVISED: 2009-10-27
PAPER ACCEPTED: 2009-11-25
THERMAL SCIENCE YEAR
2010, VOLUME
14, ISSUE
Issue 2, PAGES [341 - 352]
- Magherbi, M., et al., Second Law Analysis in Convective Heat and Mass Transfer, Entropy, 8 (2006), 1, pp. 1-17
- Erbay, L. B., Altaç, Z., Sülüs, B., An Analysis of the Entropy Generation in a Square Enclosure, Entropy, 5 (2003), 5, pp. 496-505
- Baytas, A. C., Entropy Generation for Natural Convection in an Inclined Porous Cavity, Int. J. Heat Mass Transfer, 43 (2000), 12, pp. 2089-2099
- Magherbi, M., Abbassi, H., Ben Brahim, A., Entropy Generation at the Onset of Natural Convection, Int. J. Heat Mass Transfer, 46 (2003), 18, pp. 3441-3450
- Ilis, G., Mobedi, M., Sunden, B., Effect of Aspect Ratio on Entropy Generation in a Rectangular Cavity with Differentially Heated Vertical Walls, Int. Comm. Heat and Mass Transfer, 35 (2008), 6, pp. 696-703
- Varol, Y., Oztop, H. F., Koca, A., Entropy Production Due to Free Convection in Partially Heated Isosceles Triangular Enclosures, Applied Thermal Engineering, 28 (2008), 11-12, pp. 1502-1513
- Dagtekin, I., Oztop, H. F., Bahloul, A., Entropy Generation for Natural Convection in G-Shaped Enclosures, Int. Comm. Heat and Mass Transfer, 34 (2007), 4, pp. 502-510
- Famouri, M., Hooman, K., Entropy Generation for Natural Convection by Heated Partitions in a Cavity, Int. Comm. Heat and Mass Transfer, 35 (2008), 4, pp. 492-502
- Mahmud, S., Fraser, R., Magnetohydrodynamic Free Convection and Entropy Generation in a Square Porous Cavity, Int. J. Heat Mass Transfer, 47 (2004), 14-16, pp. 3245-3256
- Ibáñez, G., Cuevas, S., de Haro, M. L., Optimization of a Magnetohydrodynamic Flow Based on the Entropy Generation Minimization Method, Int. Comm. Heat and Mass Transfer, 33 (2006), 3, pp. 295-301
- Mahmud, S., Tasnim, S. H., Mamun, M. A. H., Thermodynamic Analysis of Mixed Convection in a Channel with Transverse Hydromagnetic Effect, Int. J. Thermal Science, 42 (2003), 8, pp. 731-740
- Tasnim, S. H., Shohel, M., Mamun, M. A. H., Entropy Generation in a Porous Channel with Hydromagnetic Effect, Exergy, 2 (2002), 4, pp. 300-308
- Aïboud-Saouli, S., et al., Second-Law Analysis of Laminar Fluid Flow in a Heated Channel with Hydromagnetic and Viscous Dissipation Effects, Applied Energy, 84 (2007), 3, pp. 279-289
- Kolsi, L., et al., Effect of an External Magnetic Field on the 3-D Unsteady Natural Convection in a Cubical Enclosure, Numerical Heat Transfer, Part A, 51 (2007), 10, pp. 1003-1021
- Borjini, M. N., et al., Hydromagnetic Double-Diffusive Laminar Natural Convection in a Radiatively Participating Fluid, Numerical Heat Transfer A, 48 (2005), 5, pp. 483-506
- Ben Hadid, H., Henry, D., Numerical Study of Convection in the Horizontal Bridgman Configuration under the Action of a Constant Magnetic Field, Part 2, Three Dimensional Flow, J. Fluid Mech., 333 (1996), 1, pp. 57-83
- Mossner, R., Muller, U., A Numerical Investigation of Three-Dimensional Magnetoconvection in Rectangular Cavities, Int. J. Heat Mass Transfer, 42 (1999), 6, pp. 1111-1121
- Di Piazza, I., Ciofalo, M., MHD Free Convection in a Liquid-Metal Filled Cubic Enclosure-I-Differential Heating, Int. J. Heat Mass Transfer, 45 (2002), 7, pp. 1477-1492
- Tagawa, T., Ozoe, H., The Natural Convection of Liquid Metal in a Cubical Enclosure with Various Electro-Conductivities of the Wall under the Magnetic Field, Int. J. Heat Mass Transfer, 41 (1998), 13, pp. 1917-1928
- Kenjere{,S., Hanjali}, K., Numerical Simulation of Magnetic Control of Heat Transfer in Thermal Convection, Int. J. Heat Fluid Flow, 25 (2004), 3, pp. 559-568
- Ozoe, H., Okada, K., Experimental Heat Transfer Rates of Natural Convection of Molten Gallium Suppressed under an External Magnetic Field in either x, y or z Direction, Int. J. Heat Mass Transfer, 114 (1992), 1, pp. 107-114
- Ozoe,H., Okada, K., The Effect of the Direction of the External Magnetic Field on the Three-Dimensional Natural Convection in a Cubical Enclosure, Int. J. Heat Mass Transfer, 32 (1989), 10, pp. 1939-1954
- Saris, I. E., et al., On the Limits of Validity of the Low Magnetic Reynolds Number Approximation in MHD Natural-Convection Heat Transfer, Numerical Heat Transfer, Part B: Fundamentals, 50 (2006), 2, pp. 157-180