Lahcen El Moutaouakil
ABSTRACT
The object of this paper is to draw attention to a relatively unknown class of natural convection in enclosed spaces, namely, the thermal flows driven by heating and cooling a single vertical wall. The studied configurations (case 1 and case 2) consist of a cubical cavity with a sinusoidal temperature profile imposed on a single sidewall and adiabatic conditions on all other surfaces. In the case 1, the cooled portion is positioned below the heated part and conversely in the case 2. The present numerical study investigates the effect of the Rayleigh number ranging from 103 to 106 on natural convection under radiation effect of a Cuwater nanofluid. The volume fraction of the nanoparticles and the radiation parameter are fixed at 0.1 and 0.5, respectively. The found results show that the global heat transfer increases with the Ra number. The found results indicate that the case 2 leads in an enhancement of the overall heat transfer through the cubical cavity.
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Cross Ref
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Index Terms
- Natural convection of Cu-water nanofluid under radiation effect in a cubical cavity with sinusoidal sidewall temperature
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