Abstract
Numerical simulation of subcooled flow boiling in a vertical rectangular duct was carried out using a one-way bubble tracking method. This method treats each bubble as an individual particle on the Lagrangian coordinates. Whilst, correlations were used to evaluate the parameters including liquid velocity profile, wall superheat, nucleation site density, bubble lift-off frequency, mean bubble lift-off diameter, bubble condensation. Investigation was reformed for the effects of lift-off bubble size distribution on the void fraction. It was demonstrated that the void fraction in subcooled boiling flow is strongly affected by bubble size distribution.
