ISSN Online: 2377-424X
International Heat Transfer Conference 3
MEASUREMENT OF LOCAL HEAT TRANSFER FROM A SPHERE IN AN ARRAY
Sinopsis
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.
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.