ISSN Online: 2377-424X
ISBN CD: 1-56700-226-9
ISBN Online: 1-56700-225-0
International Heat Transfer Conference 13
DEVELOPING LAMINAR MIXED CONVECTION OF NANOFLUIDS IN A HORIZONTAL TUBE WITH UNIFORM WALL HEAT FLUX
Résumé
We have numerically studied the conjugate problem of laminar mixed convection flow and heat transfer of a particular nanofluid, water-γAl2O3 mixture, inside a horizontal tube submitted to a uniform wall heat flux. Results presented in this paper, obtained for various particle volume concentrations, have shown that the inclusion of nanoparticles has clearly intensified buoyancy secondary flow, in particular within the developing region. The use of nanofluids has also provided a clear augmentation of the heat transfer coefficient and a decrease of the wall friction coefficient with respect to those of the base fluid (water).