Abstract
In the present paper, we report on the results of an experimental study of the transfer of heat and flow structure in the inter-tube space of in-line and staggered tube (cylinder) bundles in a pulsating external flow. For two values of the relative pitch in the bundles, the average heat transfer of a cylinder, and the distributions of the components of flow velocity and rms pulsations of that velocity in the inter-tube space, were measured. It is found that the change in the heat transfer of a bundle cylinder under forced flow unsteadiness correlates well with the level of the energy of velocity pulsations in the cylinder wake. The possibility of enhancement of heat transfer in a cylinder bundle using forced flow oscillations is demonstrated.
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