A numerical model of stratified wavy gas-liquid pipe flow

C. H. Newton, M. Behnia*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


A numerical model of stratified wavy gas-liquid flow in a horizontal tube has been developed and tested with experimental data. The model solves the steady axial momentum equation together with a low Reynolds number k-ε model of turbulence for the eddy viscosity. The turbulence model is modified to accommodate the irregular geometry of stratified pipe flow, and the computations are performed in the bipolar coordinate system for convenient mapping of the physical domain. A set of boundary conditions for the wavy gas-liquid interface was devised from empirical considerations. Calculations of pressure drop and liquid holdup are observed to compare favourably with experimental measurements, and predicted flow quantities such as velocity and wall shear stress are also satisfactory, provided that the flow conditions at the gas-liquid interface remain steady or quasi-steady.

Original languageEnglish
Pages (from-to)6851-6861
Number of pages11
JournalChemical Engineering Science
Issue number24
Publication statusPublished - 14 Dec 2001
Externally publishedYes


  • Modelling
  • Multiphase flow
  • Numerical analysis
  • Pipe
  • Stratified
  • Turbulence


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