ISSN Online: 2377-424X
International Heat Transfer Conference 5
FORCED CONVECTION HEAT TRANSFER IN THE TRANSITION FROM LAMINAR TO TURBULENT FLOW IN CLOSELY SPACED CIRCULAR TUBE BUNDLES
Abstrakt
Distributions of heat transfer coefficients in axial heat exchangers, consisting of closely spaced tube bundles, were measured with a holographic interferometer. For the
transition from laminar to turbulent flow (Re 500 − 5000) six different spacings were examined. In addition to the local differences, temporal variations could be observed.
A theoretical calculation of the local heat transfer, using the finite difference method, is in good agreement with the experimental results.