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ISSN Online: 2377-424X

International Heat Transfer Conference 3
August, 7-12, 1966, Chicago, USA

MEASUREMENT OF LOCAL HEAT TRANSFER FROM A SPHERE IN AN ARRAY

Get access (open in a dialog) DOI: 10.1615/IHTC3.750
pages 336-343

Résumé

To assess the influence of neighbouring spheres on the local convective heat transfer profile of a single sphere, a 3 inch copper sphere was instrumented with a heater and thermal flux metering inserts. Profiles of local surface heat transfer coefficient were obtained with the sphere mounted in arrays of 3 inch wooden spheres and air flows at Reynolds numbers (based on sphere diameter) of approximately 50,000.
The effect of neighbouring spheres was found to depend on their proximity and angular position relative to the stream, and the profile is considerably modified in the region of points of contact or near contact.