Preliminary experimental study of forced air-cooling of rectangular blocks encountered in electronic equipment

Document Type

Conference Proceeding

Date of Original Version



Experiments have been carried out to study heat transfer and pressure-drop characteristics in forced convection cooling of arrays of blocks deployed along one wall of a rectangular channel. Results were obtained for several combinations of dimensionless parameters characterizing channel height and array density, and for different values of Reynolds number, based on the height and velocity above the modules, in the range 500 to 10,000. The effect of increasing the height of the passage above the modules is to increase both the friction factor and Nusselt number, whereas an increase of the spacing between the modules tends to decrease these parameters. Both the heat transfer and the pressure-drop data correlate well when the geometrical parameters are combined together to give a new dimensionless parameter, called the packing density.

Publication Title

American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD



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