The effect of bubble size on void fraction distribution in subcooled flow b
oiling in a vertical annular channel at low pressure is studied numerically
. It is found that a simple linear formula used by Anglart and Nylund [1] a
nd adopted in Reference [2] for calculation of bubble size as a function of
local subcooling lacks a physical and experimental basis limiting the gene
ral application of the model for predicting subcooled flow boiling. A bubbl
e size correlation proposed by Zeitoun and Shoukri [3] has been employed in
this study. The predictions of void fraction profiles and the bubble size
distributions, after incorporating the above bubble size correction, show v
ery good agreement with the experimental data, (C) 1999 Elsevier Science Lt
d.