Nt. Obot et al., CORRELATION OF ADIABATIC 2-PHASE PRESSURE-DROP DATA USING THE FRICTIONAL LAW OF CORRESPONDING STATES, Journal of fluids engineering, 115(2), 1993, pp. 317-323
A method, based on that developed for single-phase flow, is proposed f
or the correlation of two-phase frictional pressure drop data. It is v
alidated using air-water data obtained on small horizontal passages of
rectangular and circular cross-section for values of total mass flux
G in the 50-2000 kg/m2s range. The pressure drop for air- water mixtur
es can be predicted from the proposed correlations provided the critic
al quality (or superficial gas Reynolds number) and the critical press
ure gradient for transition from bubble/plug-to-slug flow are known. A
comparison of the proposed method with that of Lockhart and Martinell
i is presented and discussed.