ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
Numerical Study of Slug Flow Heat Transfer in Microchannels
Resumo
Two-phase microchannel slug flow has attracted significant interest among researchers due to its wide range of
applications. This paper will present some as yet overlooked features of slug flow heat transfer in microchannels,
using numerical simulation. Numerical simulations are carried out using ANSYS FLUENT with the
Volume of Fluid (VOF) method with a 2D axisymmetric geometry for a 100?m inner diameter microchannel
with constant wall temperature boundary conditions. Effects of slug flow parameters on heat transfer are discussed
showing the heat transfer rate follows a similar trend to existing numerical results.Our results show a
significant increase in Nusselt number with liquid-liquid two-phase flow compared to single phase flow, by up
to 200%. The study revealed that capillary number, size of the liquid slugs as well as the liquid film thickness
have an important impact on heat transfer.