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Theory of Heat Transfer in Smooth and Rough Pipes (1942)

Mattioli, G. D.

In: CASI

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Publication Date: 2019-07-13

Description: The heat transfer accompanying turbulent flow in tubes has been treated by a new theory of wall turbulence, and a formula for smooth tubes has been derived which is asymptotic at Re approaches infinity. It agrees very well with the data available to date. The formula also holds for the flow along a flat plate if lambda is based on the velocity far away. For rough tubes, the unit conductance is shown to be a function of kv*/upsilon; the two empirical constants (delta(r), n) which appear in equation (52) cannot yet be determined because of lack of experimental data.

Keywords: Fluid Mechanics and Thermodynamics

Type: NACA-TM-1037 , Forschung auf dem Gebiete des Ingenieurwesens, Bd. 11; 11; 4; 149-158

Format: application/pdf

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