Yun Whan Na*
, J. N. Chung†
Frontiers in Heat and Mass Transfer, Vol.11, pp. 1-14, 2018, DOI:10.5098/hmt.11.36
Abstract Flow instabilities of convective two-phase boiling in a trapezoidal microchannel were investigated. using a three-dimensional numerical model.
Parameters such as wall temperature and inlet pressure that characterize the instability phenomena of flow boiling with periodic flow patterns were
studied at different channel wall heat fluxes and flow mass fluxes. Results were obtained for various wall heat flux levels and mass flow rates. The
numerical results showed that large amplitude and short period oscillations for wall temperature and inlet pressure fluctuations are major characteristics
of flow instability. The wall temperature fluctuations are mainly initiated by the transition from bubbly to slug… More >
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