CFD Modcling Of Bubbly Flow In A Slug Unit Cell
Author(s)
H. Laux and R. Schulkes
Abstract
CFD modeling of bubbly flow in a slug unit cell
H. ~ a u x ' and R. schulkes2
'SINTEF Materials Technology, Norway
2~orsk Hydro Research Centre Porsgrunn, Norway
Abstract
Slug flow in horizontal pipes filled with oil-gas and water-air mixtures has been
studied by means of CFD. The simulations have been carried out using a twofluid
model for dispersed bubbles of given size. The computational domain has
been the unit cell consisting of the slug and the liquid film underneath the largescale
bubble. The film height could be obtained form a Id unit cell model. CFD
simulations have been conducted mainly in 2d but also in 3d. The deposition of
gas at the bubble rear end, at the bubble front and from the film to the large-scale
bubble has been modeled. Many calculations (numerical experiments) have been
run in which material properties, bubble size, pipe diameter and flow conditions
have been varied. The analysis shows that, in particular in oil-gas systems, gas
carry-over from the film into the slug i
Keywords
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