Local Heat-Transfer Performance and Mechanisms in Radial Flow Between Parallel Disks
نویسنده
چکیده
An experimental study is conducted to determine local heat-transfer performance and mechanisms in radial flow through two parallel heated disks. Three distinct heat-transfer mechanisms are disclosed along the flow passage: steady laminar, periodic laminar, and turbulent. The heat-transfer performance is enhanced proportional to the 0.5 and 0.8 powers of Reynolds number, in the steady periodic and turbulent ranges, respectively. The local and average heat-flow maps are constructed to define the domain or range of the transfer mechanisms. The locations for the onset of both steady laminar and turbulent mechanisms shift upstream with an increase in the flow rate.
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