A Study of Diffusion in Turbulent Pipe Flow

[+] Author and Article Information
G. V. Evans

Mechanical Engineering Department, University College, Cardiff, Wales, U. K.

J. Basic Eng 89(3), 624-631 (Sep 01, 1967) (8 pages) doi:10.1115/1.3609669 History: Received July 23, 1965; Revised August 05, 1966; Online November 03, 2011


The paper describes a numerical solution to the problem of diffusion of a dye injected into turbulent pipe flow. Theoretical concentration distributions obtained assuming a uniform distribution of radial diffusivity coefficient and those obtained assuming a parabolic radial distribution of diffusivity are compared with measured concentration profiles at various distances downstream of injection. The effect of flow and injection conditions on the length of straight pipe required for complete mixing of the dye has been found from the theoretical results.

Copyright © 1967 by ASME
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