Heat-mass transfer analog of air-cooling rotating disc with naphthalene sublimation

The heat transfer characteristics of rotating disc have been investigated experimentally by means of a mass transfer analog of naphthalene sublimation. Two models are used: a free rotating disk and a shrouded rotor-stator system. Mass transfer test results of the free disk are in good agreement with experimental results of heat transfer and theoretical prediction. The test results of the local Sherwood number are obtained, which are dependent on the rotational Reynolds number, flow coefficient, gap ratio, and shroud-clearance ratio.