The heat transfer characteristics of a confined offset turbulent plane jet impinging a flat surface is investigated numerically in this paper. The parameters of particular interest are the jet offset distance and jet exit temperature. The jet exit temperature was held constant at 100~0 C while the plate temperature was uniform at 23~0 C. For the mentioned jet temperature, the offset distance normalized with jet exit width is varied from 0.5 (wall jet) to 4. For all cases, the jet exit Reynolds number was 4000. The resulting aerodynamic characteristics of the impinging jet and its consequent heat transfer behavior were studied using the commercial software ANSYS FLUENT. The configuration which yielded the maximum heat transfer was identified. Once the wall jet developed, beyond a certain distance downstream of the stagnation point, the velocity and temperature profiles displayed similarity behavior. Results for the 2-D and 3-D cases have been discussed. The velocity and thermal boundary layers were tracked following impingement and compared to that of a simple flat plate. The thermal behavior could be predicted based on the velocity trends.
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