Abstract
This paper describes an experimental study aimed at determining the effect of internal partitions on the natural convection heat transfer across an enclosure. Experiments are conducted using a representative cubic geometry differentially heated from the side with an internal partial vertical partition. Two test cells with different working fluids are used, an air ( Pr∼-0.7) and a water ( Pr∼-0.6) cell. Nusselt-Rayleigh-aperture width correlation curves are developed for both the air and the water data using a resistance model. For a constant Rayleigh number, as the aperture width is decreased, the flow field undergoes a transition from a boundary layer regime to a blocked flow bulk density driven regime.
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