| Titre |
Effect of Constant Magnetic Field on Convective Heat Transfer through Anisotropic River Beds |
| Auteurs |
YOVOGAN JULIEN [1],
DEGAN GÉRARD [2],
FAGBEMI LATIF ADÉNIYI [3],
|
| Journal: |
Journal of Crystallization Process and Technology |
| Catégorie Journal: |
Internationale |
| Impact factor: |
0 |
| Volume Journal: |
8 |
| DOI: |
https://doi.org/10.4236/jcpt.2018.82004 |
| Resume |
An analytical investigation is conducted to study the effect of magnetic field
on convection heat transfer through packed porous beds which consists of a
horizontal fluid layer (river bed) and a porous zone with anisotropic permea-
bility and underlined by a surface heated by a constant temperature T1 . The
free surface of the fluid layer overlying the horizontal porous layer receives
solar rays to length of day and is then considered heated isothermally at tem-
perature T 2 such as T 1 < T 2 . Flow in porous medium is assumed to be go-
verned by the generalized Brinkman-extended Darcy law and in the fluid layer
by the Navier-Stokes model. The Beavers-Joseph condition is applied at the
interface between the two layers. The influence of Hartmann number and hy-
drodynamic anisotropy on the convective phenomenon is investigated analyt-
ically. It is found that the magnetic field, the anisotropic permeability and the
thickness of the porous lining, ε , have a strong influence of the geothermal
convective flow and the heat transfer rate. |
| Mots clés |
Hartmann Number, Hydrodynamic Anisotropy, Convection Heat Transfer |
| Pages |
57 - 71 |
| Fichier |
(PDF) |