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Vaporization at the base of bubbles of different shape during nucleate boiling of water
Author(s) -
Hospeti N. B.,
Mesler R. B.
Publication year - 1969
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690150217
Subject(s) - bubble , vaporization , boiling , evaporation , volume (thermodynamics) , thermocouple , nucleate boiling , base (topology) , thermodynamics , chemistry , nucleation , surface (topology) , mechanics , boiling point , materials science , heat transfer , composite material , geometry , heat transfer coefficient , physics , mathematical analysis , mathematics
Differently shaped bubbles were observed growing during nucleate boiling of water at atomspheric pressure. The surface temperature beneath the bubbles was measured simultaneously with a fast response surface thermocouple. The evaporation from the base necessary to account for the observed cooling was calculated. A comparison of the ratio of vapor volume formed at the base to the total volume of the bubble shows a dependency on bubble shape. The ratio is smallest for spherical bubbles, largest for hemispherical and intermediate for oblate bubbles.