Abstract
A model of turbulent transfer processes modified to take into account the effect of density fluctuations is proposed. The model is used for finding expressions for the turbulent transfer coefficients (viscosity, thermal conductivity, and diffusion of admixtures) in flows of the boundary-layer type in the presence of small density gradients. The turbulent Prandtl number distribution in the far wake behind a heated cylinder is compared with the results of measurements.
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