ISSN Online: 2688-7231
ISBN Flash Drive: 978-1-56700-497-7
ISBN Online: 978-1-56700-496-0
Proceedings of the 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2019)
Numerical Study of Two-Phase Flow Boiling Phenomena in Boiler Tube
Abstract
In this study, Eulerian multiphase model coupled with the
Rensselaer Polytechnic Institute (RPI) wall boiling model and
SST k-ω turbulence model is utilized to analyse the subcooled flow boiling heat transfer in a circular vertical boiler tube under constant wall heat flux boundary condition. The numerical model is validated with the experimental results
reported in the published literatures. Further, the model is
extended to predict the void fraction, two-phase heat transfer
coefficient and critical heat flux (CHF) and compared with the
available correlations. It is found that the Lockhart-Martinelli parameter based void fraction correlation agrees well with the present numerical predictions and the published experimental results with a maximum deviation less than 1%.