Citation
Bachok @ Lati, Norfifah and Ishak, Anuar and Pop, Ioan
(2012)
Unsteady boundary-layer flow and heat transfer of a nanofluid over a permeable stretching/shrinking sheet.
International Journal of Heat and Mass Transfer, 55 (7-8).
pp. 2102-2109.
ISSN 0017-9310
Abstract
The unsteady boundary layer flow of a nanofluid over a permeable stretching/shrinking sheet is theoretically
studied. The governing partial differential equations are transformed into ordinary ones using a similarity transformation, before being solved numerically. The results are obtained for the skin friction coefficient, the local Nusselt number and the local Sherwood number as well as the velocity, temperature and the nanoparticle fraction profiles for some values of the governing parameters, namely, the unsteadiness parameter, the mass suction parameter, the Brownian motion parameter, the thermophoresis
parameter, Prandtl number, Lewis number and the stretching/shrinking parameter. It is found that dual
solutions exist for both stretching and shrinking cases. The results also indicate that both unsteadiness
and mass suction widen the range of the stretching/shrinking parameter for which the solution exists.
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