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Features of metastable superheated water atomization when being discharged through convergent-divergent nozzles at different superheat values

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Published under licence by IOP Publishing Ltd
, , Citation V I Zalkind et al 2021 J. Phys.: Conf. Ser. 2088 012054 DOI 10.1088/1742-6596/2088/1/012054

1742-6596/2088/1/012054

Abstract

Experiments with the metastable superheated water atomization proved the significant increase of the submicron droplets mass fraction at the outlet of convergent-divergent nozzle from 0.45-0.55 to 0.75-0.9 with an increase of the inlet water temperature from170to255°C. Two different approaches to dimensionless treatment of the atomization processdata and determining the boundary of the zone of flashing predominance are compared. The analysis of two approaches to dimensionless treatment of experimental and calculating results concerning transition to predominating role of nucleation in the process of superheated liquid atomization in convergent-divergent nozzles is done.

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