Three-dimensional numerical predictions and experimental data have been obtained for natural convection from a 3 × 3 array of discrete heat sources flush-mounted on one vertical wall of a rectangular cavity and cooled by the opposing wall. Predictions performed in a companion paper (Heindel et al., 1995a) revealed that three-dimensional edge effects are significant and that, with increasing Rayleigh number, flow and heat transfer become more uniform across each heater face. The three-dimensional predictions are in excellent agreement with the data of this study, whereas a two-dimensional model of the experimental geometry underpredicts average heat transfer by as much as 20 percent. Experimental row-averaged Nusselt numbers are well correlated with a Rayleigh number exponent of 0.25 for RaLz ≲ 1.2 × 108.
Laminar Natural Convection in a Discretely Heated Cavity: II—Comparisons of Experimental and Theoretical Results
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Heindel, T. J., Incropera, F. P., and Ramadhyani, S. (November 1, 1995). "Laminar Natural Convection in a Discretely Heated Cavity: II—Comparisons of Experimental and Theoretical Results." ASME. J. Heat Transfer. November 1995; 117(4): 910–917. https://doi.org/10.1115/1.2836310
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