Nuo kair 023 Re Pr

All air properties are taken based on the mean bulk air temperature with the Prandtl number (Pr) for air as 0.71.

Overall uncertainty for the regionally averaged heat transfer coefficient is predominantly dependent upon the difference between the wall temperature and the bulk air temperature, the net heat flux input and the ability to maintain a steady mass flow rate. As with most experiments, the uncertainty for this investigation decreases with the increasing magnitude of input parameters. For higher Reynolds numbers, the uncertainty has been determined to be nearly 7%. However, for lower Reynolds numbers (Re=5000), the uncertainty could be as much as 20%. The uncertainty analysis was performed using the Kline and McClintock [12] uncertainty analysis procedure.

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