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RESEARCH PAPERS: Additional Technical Papers

Derivation of Turbulent Transport Coefficients From Turbulent Parameters in Isotropic Turbulence

[+] Author and Article Information
Ramzy G. Abdel-Gayed, Derek Bradley

Mechanical Engineering Department, University of Leeds, Leeds, U. K.

J. Fluids Eng 99(4), 732-736 (Dec 01, 1977) (5 pages) doi:10.1115/1.3448896 History: Received September 12, 1977; Online October 12, 2010

Abstract

A survey of experimental work on mass, momentum, and energy transport at the axis of pipes relates the ratio of turbulent diffusivity to kinematic viscosity, ε/ν, to the flow Reynolds number. A single relationship is applicable for all three transport processes. Measurements of turbulent parameters also are surveyed and related to the flow Reynolds number. From a combination of the two sets of results a correlation is obtained between ε/ν and the turbulent Reynolds number, Rl , which is possibly of general validity for isotropic turbulence. The results are based upon transport transverse to the flow (“y” direction) and yield εy /ν = 11 Rly 0.65 for Rly > 100.

Copyright © 1977 by ASME
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