Abstract
An investigation has been carried out to study the dynamics of the transfer of heat from a circular cylinder in a turbulent air stream with emphasis on the wake region. The results, obtained over a Reynolds number range from 3000 to 9000, clearly indicate that the wake is comprised of two distinct regions; the secondary and the main vortex regions. The former extends between 85 and 130–150° from the front stagnation point, while the latter covers the remaining area of the wake. These two regions are shown to react differently to variations in the free-stream conditions.
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