Remarks on Film Condensation With Turbulent Flow

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Abstract
Analogy calculations of the Prandtl-Kármán type are applied to the film condensation of a pure substance on a vertical wall under such conditions that the flow in the condensate layer is turbulent. The results agree with Colburn’s predictions made by the use of his analogy, which predictions are in general agreement with the meager experimental data available. The present results are extended to condensates of low Prandtl number, such as molten metals, and, as has been demonstrated already for the case of flow in closed channels, the contribution of turbulence in this case is found to be small until high Reynolds numbers are attained. Results for the mean heat-transfer coefficient are presented for Prandtl numbers from 0 to 5 and for Reynolds numbers as high as 105.

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