Formation and Evaporation of Near-Wall Fluid Films under Expansion from a Nozzle to the Vacuum
V. N. Yarygin, V. G. Prikhod’ko, I. V. Yarygin
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Keywords: пристенная пленка жидкости, спутный газовый поток, межфазное взаимодействие, срыв капель, истечение в вакуум, испарение пленки, near-wall liquid film, co-current gas flow, phase interaction, droplet detachment, expansion into vacuum, film evaporation
Abstract
Expansion of near-wall films of liquids with different physical properties accompanied by high-velocity co-current gas flow from a nozzle into vacuum is studied experimentally. Local parameters of liquid films inside the nozzle are measured. Gas-droplet flow structure behind the nozzle exit cross-section is examined. Limiting temperatures of liquid films formed on the nozzle outer surface are measured.
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