Jr. Chen et al., MODELING OF 2-PHASE BLOWDOWN FROM PIPELINES .2. A SIMPLIFIED NUMERICAL-METHOD FOR MULTICOMPONENT MIXTURES, Chemical Engineering Science, 50(13), 1995, pp. 2173-2187
A simplified numerical method is proposed to solve general two-phase f
low equations for multi-component mixtures. The method is applied to s
olve the marginal stability model proposed in the first part of this p
aper. Case studies are performed and validated against experimental da
ta for the blowdown of pipelines containing one- or two-component mixt
ures. The results show that the marginal stability model performs bett
er than the simple homogeneous model for blowdown from short pipes. Fo
r blowdown from long pipes, the results of both models are quite simil
ar. Concentration stratification is found to be insignificant in the o
verall blowdown predictions.