Abstract
The heat transfer characteristics of an oblique impinging round jet with confined wall were investigated experimentally. The parameters investigated were Reynolds number in the range 2000-20000, the jet angle at 45, 60°and 90°measured from the horizontal and dimensionless distance between nozzle and impinged surface, h/D=1.0. The local temperature distribution on the impinged surface was obtained in detail by a thermocamera using liquid crystal. The local heat flux was compensated by using the detailed temperature distribution and numerically solving the equation of heat conduction. Two-dimensional profiles of local Nusselt number and temperature changed with jet angle and Reynolds number. They showed the peak shift and plateau of the local heat transfer.
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