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Film boiling of mercury droplets
Author(s) -
Baumeister Kenneth J.,
Schoessow Glen J.,
Chmielewski Charles E.
Publication year - 1977
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450550507
Subject(s) - leidenfrost effect , vaporization , wetting , boiling , mass transfer , mechanics , drop (telecommunication) , thermodynamics , materials science , mercury (programming language) , heat transfer , chemistry , composite material , nucleate boiling , physics , heat transfer coefficient , mechanical engineering , engineering , computer science , programming language
Vaporization times of mercury droplets in Leidenfrost film boiling on a flat horizontal plate are measured in an air atmosphere. Extreme care was used to prevent large amplitude droplet vibrations and surface wetting: therefore, these data can be compared to film boiling theory. For these data, diffusion from the upper surface of the drop is a dominant mode of mass transfer from the drop. A closed‐form analytical film boiling theory is developed to account for the diffusive evaporation. Reasonable agreement between data and theory is seen.