1975•Geophysical Research LettersRequires access

Equations of turbulent diffusion in shear flows

S. K. Kao

Abstract

An analysis of the characteristics of the eddy diffusivity is made, and the equations for turbulent diffusion in shear flows are derived. It is shown that the coefficients of the eddy diffusion can be expressed in terms of the stress tensor of the turbulent motion, a characteristic time and the velocity shear of the mean flow, which can be readily determined.

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Key concepts: Eddy diffusion, Turbulent diffusion, Turbulence, Mechanics, Shear (geology), Shear flow, Shear velocity, Thermal diffusivity