Studies on the Convective Heat Transfer from a Rotating Disk : 6th Report, Experiment on the Laminar Mass Transfer from a Stepwise Discontinuous Naphthalene Disk Rotating in a Uniform Forced Stream

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概要

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• The heat transfer coefficient from a disk with any prescribed surface temperature change rotating in a uniform stream may be predicted by means of superposition of a step function factor. The validity of an approximate solution for a step function factor obtained in 4th report has been verified in the case of P_r =S_c =2.5 from the mass transfer analogy by a naphthalene sublimation. In order to make clear the end effects produced by a finite diameter of a disk, the local variations in the mass transfer were measured. The end effect in a rotating disk immersed in a stream is considerable, since a flow separation arises in the circumference of a disk. The fact that the mean mass transfer coefficient in Sogin's experiment gives about 20% higher values than the analytical solution may be explained by using the present empirical relation on the local effect.

• 一般社団法人日本機械学会の論文

著者

• Mabuchi Ikuo

  Faculty Engineering Gifu University

• Tanaka Toshio

  Junior College Of Technology Gifu University

• Kotake Yako

  Toshiba Electric Co. Ltd.

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