Published 12 issues per year
ISSN Print: 1091-028X
ISSN Online: 1934-0508
Indexed in
NUMERICAL SIMULATION OF THERMOMAGNETIC CONVECTION OF AIR IN A POROUS CUBIC ENCLOSURE WITH AN ELECTRIC COIL INCLINED IN GENERAL ORIENTATIONS USING A LTNE MODEL
ABSTRACT
The natural convection heat transfer of paramagnetic fluid in porous media can be controlled by the gradient magnetic field. Thermomagnetic convection of air in a porous cubic enclosure with an inclined coil around the Y and Z axes is numerically investigated in the presence or absence of a gravity field. The Biot−Savart law is used to calculate the magnetic field. The Darcy model is used to solve the momentum, and the energies for fluid and solid are solved with the local thermal non-equilibrium (LTNE) models. The flow and temperature fields for the thermomagnetic convection of air are presented and the average Nusselt number on the hot wall is calculated and compared. The results show that both the magnetic force and the coil inclination have a significant effect on the flow field and heat transfer in a porous cubic enclosure, and the thermomagnetic convection heat transfer of air can be enhanced or controlled by applying a gradient magnetic field.
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Nield Donald A., Bejan Adrian, Internal Natural Convection: Heating from the Side, in Convection in Porous Media, 2017. Crossref