Studies on the Convective Heat Transfer from a Rotating Disk : 5th Report, Experiment on the Laminar Heat Transfer from a Rotating Isothermal Disk in a Uniform Forced Stream

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Pressure distributions on the disk surface and along the axis through the stagnation point have been measured. The settling place of rotating disk, the measuring point of velocity, and the dimensions of the disk model have been decided to refer well to the condition assumed in theoretical analysis. The results are summarized as follows. (1) The generalized experimental formulas which contained the effect of natural convection were established for the heat transfer from a rotating disk in the quiescent fluid and a stationary disk in the axial flow. (2) Experimental results in the presence of both rotating and axial stream velocities revealed good agreement with theory (2nd Report). (3) For the rotation alone, our results agreed with Cobb-Saunders and for the axial flow alone due to separation at the edge of the disk, Sogin's experimental data are about 17% larger than our results and theory.