Abstract
The model for calculating the thickness of a turbulent film moving under the action of gravity and shear stress of the gas flow friction is proposed. The simplest approximation of turbulent viscosity giving the cubic damping law in a viscous sublayer and logarithmic asymptotics of velocity at a distance from the wall was used. The study is aimed at derivation of explicit formulas for the film thickness depending on Reynolds number and friction factor of a gas flow. According to comparison of model calculations with published experimental data, the deviation is maximal at the laminar-wavy flows and it can be up to 10–20 %.
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