SPE Journal
Volume 16,
Number 3,
September 2011,
pp. 692-697
Summary
The model presented in this study unifies the predictions of liquid
wetted-wall fraction, film gravity center, and flow-pattern transition between
stratified and annular flows. It is based on the instability of the liquid film
in an equilibrium stratified flow proposed by Taitel and Dukler (1976) for
flow-pattern transition prediction from stratified flow to nonstratified flows.
The geometrical relationship between the wetted-wall fraction and the gravity
center of the liquid film is established based on the double-circle model
proposed by Chen et al. (1997), and is further simplified with explicit
approximation. The predictions of the present model are compared and agree well
with experimental wetted-wall-fraction measurements and flow-pattern
observations from different authors.
© 2011. Society of Petroleum Engineers
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History
- Original manuscript received:
7 July 2009
- Revised manuscript received:
26 February 2011
- Manuscript approved:
4 March 2011
- Published online:
16 June 2011
- Version of record:
15 September 2011