Abstract
Experiments have been performed to determine convection heat transfer from a single heat source and an in-line, four-row array of 12 heat sources which are flush mounted to one wall of a horizontal, rectangular channel. The experiments were performed with water and FC-77 for channel Reynolds numbers ranging from approximately 1000 to 14,000. Results for a single heat source are in good agreement with those obtained for the first row of the array but exceed predictions based on conventional forced-convection correlations. The average convection coefficient for the rows of the array decreases by approximately 25% from the first to the second row and by less than 5% from the third to the fourth row. The data are in good agreement with model predictions for turbulent flow but are underpredicted for laminar flow.
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