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Radial distribution of diffusivity in the core of turbulent pipe flow

Authors
Journal
Chemical Engineering Science
0009-2509
Publisher
Elsevier
Publication Date
Volume
28
Issue
10
Identifiers
DOI: 10.1016/0009-2509(73)85067-5

Abstract

Abstract Tests are described which yield the radial distribution of the turbulent diffusivity for enthalpy (eddy diffusivity) for fully-developed flow of water in a smooth straight pipe, with Reynolds number 10 5. It is found that this closely resembles the distribution of the turbulent diffusivity for momentum (eddy viscosity), with an average value of turbulent Prandtl number of 0·977. This is somewhat greater than the value predicted by the Jenkins model.

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