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Thermophysics and Aeromechanics

2019 year, number 1

Features of the vapor formation process near a wall with a gas-droplet film cooling

V.I. Terekhov, N.E. Shishkin
Kutateladze Institute of Thermophysics SB RAS, Novosibirk, Russia
Keywords: концентрация пара, газокапельные струи, параметр вдува, жидкие пленки, канал с адиабатическими стенками, vapor concentration, gas-droplet jets, ejection coefficient, liquid films, channel with adiabatic walls


On the basis of available experimental data, we have performed an analytical study of the concentration of saturated vapor over a liquid film formed from droplets being deposited onto the wall of an adiabatic channel under gas-droplet film cooling. The analysis was carried out by varying the main parameters of the mixing jets, namely, the ejection coefficient, the concentration of the liquid, and the main-flow temperature. An approximating dependence for the concentration of saturated vapor in the presence of the liquid film is obtained, and the effect due to the flow non-isothermality is taken into account.