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Thermophysics and Aeromechanics

2013 year, number 6

Interfacial friction and mass transfer at gas flow into vacuum through a nozzle with a near-wall liquid film

V.N. Yarygin, V.G. Prikhodko, I.V. Yarygin, and A.D. Nazarov
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: near-wall film, co-current flow, droplets, mass transfer, interfacial friction
Pages: 739–747


The cycle of experiments on interaction between the co-current gas flow and the near-wall liquid film were carried out at high gas flow velocities, including the supersonic ones. The local parameters of the near-wall film were measured by the capacitance probes. It is shown that the co-current gas flow affects the near-wall film significantly, causing intensive wave formation, droplet detachment from the film surface, and their entrainment by the gas flow. It is determined that a relative amount of liquid entrained by the co-current flow is generalized by the Weber number of this gas flow.