A Model For The Bubble Lift-off Diameter In
Subcooled Boiling Flow In A Horizontal Channel
Author(s)
S. Shabannejad & N. Ashgriz
Abstract
Bubble nucleation in subcooled boiling flow in a horizontal annular channel with
a square cross section is investigated. The experiments were performed with
water at pressures of between 1 and 2.5 atm and at low heat and mass fluxes.
Bubble lift-off diameters were obtained from direct high speed videography. The
developed model for the bubble lift-off diameter was obtained by analyzing
the forces acting on a bubble and then a model for the bubble growth rate
constant was suggested. Our proposed model was then validated by experimental
data and it agreed well with the experimental data. The obtained results were also
compared with the available correlations from other researchers.
Keywords: sub-cooled boiling, forced convection heat transfer, bubble lift-off
diameter, flow visualization with high-speed camera, critical heat flux,
horizontal annulus, nucleation.
Keywords
sub-cooled boiling, forced convection heat transfer, bubble lift-off
diameter, flow visualization with high-speed camera, critical heat flux,
horizontal annulus, nucleation.
Related Book
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