New method of simulation of volume condensation of supersaturated vapor

Kortsenshtein, N. M.; Samuilov, E. V.; Yastrebov, A. K.

doi:10.1134/s0018151x09010118

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…As in our previous works (see, e.g., [21]), let us consider an immobile vapor-incondensable gas mix ture at a preset initial supersaturation ratio s = /p s (T m ), where p s (T m ) is the saturation pressure over a flat liquid-vapor interface. Let us describe the condensation relaxation process using the kinetic equation for the droplet size distribution function, which, in the case of homogeneous condensation in an immobile medium with no allowance for droplet coagulation, has the following form [10,22]: (20) where f is the mass droplet size distribution function normalized with respect to the number of droplets in mass unit of the vapor-gas-droplet mixture, r is the droplet radius, is the droplet growth rate, I is the nucleation rate, ρ Σ is the density of the vapor-gasdroplet mixture, δ is the Dirac delta function, and r cr is the critical droplet radius.…”

Section: Formulation Of Problem Concerning Condensation Relaxationmentioning

confidence: 99%

Heat exchange between phases and kinetics of condensation relaxation for different regimes of droplet growth

2012

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The mathematical model and numerical solution of the problem relevant to the heat exchange between a droplet and a vapor-gas medium are described for different regimes of the condensation droplet growth. The effect of the heat exchange between phases on the kinetics of the condensation relaxation after supersaturation is instantaneously generated in a vapor-gas mixture is studied based on the results obtained. Cesium-argon and ethane-helium mixtures are considered, with the droplet growth regime being free molecular in the former case and varying from transient to continual in the latter case. The data obtained in terms of the general formulation of the problem and those resulting from the assumptions simplifying the behavior of droplet temperature are compared to determine the applicability domain of the aforementioned assumptions.

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Section: Formulation Of Problem Concerning Condensation Relaxationmentioning

confidence: 99%

Heat exchange between phases and kinetics of condensation relaxation for different regimes of droplet growth

2012

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“…needs to be predicted accurately. On the other hand, volume (or bulk flow) condensation is produced when humid flow achieves dew point conditions without heat release into the surroundings, by means of gas expansion [19] or by mixing with colder flow, being the latter the object of study of this work. In this way, volume condensation may even appear when subsaturated wet streams meet.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%