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5 - Stratified flow

Published online by Cambridge University Press:  05 November 2013

Thomas J. Hanratty
Thomas J. Hanratty
Affiliation:
University of Illinois, Urbana-Champaign
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Summary

Scope

This chapter describes the stratified pattern observed in gas–liquid flows, for which liquid flows along the bottom of a conduit and gas flows along the top. The gas exerts a shear stress on the surface of the liquid. It is desired to calculate the average height of the liquid layer and the pressure gradient for given liquid and gas flow rates. The flow is considered to be fully developed so that the height of the liquid is not changing in the flow direction and the pressure gradient is the same in the gas and liquid flows.

In order to consider stratified flow in circular pipes, the simplified model of the flow pattern, presented by Govier & Aziz (1972), is exploited. The interface is pictured to be flat. At large gas velocities, some of the liquid can be entrained in the gas. This pattern is considered in Section 12.5 entitled “the pool model” for horizontal annular flow.

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Physics of Gas-Liquid Flows , pp. 94 - 110
Publisher: Cambridge University Press
Print publication year: 2013

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References

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  • Stratified flow
  • Thomas J. Hanratty, University of Illinois, Urbana-Champaign
  • Book: Physics of Gas-Liquid Flows
  • Online publication: 05 November 2013
  • Chapter DOI: https://doi.org/10.1017/CBO9781139649421.007
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  • Stratified flow
  • Thomas J. Hanratty, University of Illinois, Urbana-Champaign
  • Book: Physics of Gas-Liquid Flows
  • Online publication: 05 November 2013
  • Chapter DOI: https://doi.org/10.1017/CBO9781139649421.007
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Stratified flow
  • Thomas J. Hanratty, University of Illinois, Urbana-Champaign
  • Book: Physics of Gas-Liquid Flows
  • Online publication: 05 November 2013
  • Chapter DOI: https://doi.org/10.1017/CBO9781139649421.007
Available formats
×