Robuta

https://www.nist.gov/publications/convective-heat-transfer-coefficients-near-horizontal-two-phase-flow-nitrogen-and
Correlations for convective heat transfer coefficients are reported for two-phase flow of nitrogen and hydrogen under low mass and heat flux conditions.
convective heat transfertwo phase flowcoefficientsnearhorizontal
https://www.ornl.gov/publication/improvements-ctf-closure-models-modelling-two-phase-flow
two phaseimprovementsctfclosuremodels