Near-wall liquid film ejection with co-current gas flow from nozzle into vacuum

Yarygin, V. N.; Prikhodko, V. G.; Yarygin, I. V.; Vyazov, Yu.N.

doi:10.1016/j.vacuum.2014.04.026

Cited by 9 publications

(1 citation statement)

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“…Gas flows at angles over 90° are usually called backflows. It was shown [3] that under action of backflow near-wall liquid film entering vacuum at the exit edge not only disintegrates into droplets, but also emerges on the external surface of the channel and starts moving in the opposite direction even against gravitational force. Due to this effect operation of orientation thrusters of space vehicles is accompanied by backflows of propellant components droplets, which are usually harmful and should be minimized.…”

Section: Introductionmentioning

confidence: 99%

Interfacial phenomena in films of monoliquids and binary mixtures in vacuum

et al. 2016

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Abstract. The problem of joint gas outflow with near-wall liquid film from an axisymmetric cylindrical channel into vacuum is studied experimentally. It is shown that liquid film at the exit edge of the channel not only disintegrates into droplets, but also emerges on the external surface of the channel and starts moving in the opposite direction to the gravitational force. The phenomenon revealed is strongly dependent on physical properties of liquid and pressure in the surrounding space. Temperature of a film formed on the external surface of the channel is measured. It is shown that due to evaporation in vacuum liquid film is cooled to temperature at which the saturated vapor pressure is close to pressure in vacuum chamber.

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Section: Introductionmentioning

confidence: 99%