Book contents
- Frontmatter
- Contents
- Preface
- List of Symbols
- 1 One-dimensional analysis
- 2 Flow regimes
- 3 Film flows
- 4 Inviscid waves
- 5 Stratified flow
- 6 Influence of viscosity on large Reynolds number interfacial waves; effect of spatially and temporally induced oscillations on a turbulent flow
- 7 Large-wavelength waves; integral equations
- 8 Bubble dynamics
- 9 Horizontal slug flow
- 10 Particle dispersion and deposition
- 11 Vertical annular flow
- 12 Horizontal annular flow
- Index
- References
5 - Stratified flow
Published online by Cambridge University Press: 05 November 2013
- Frontmatter
- Contents
- Preface
- List of Symbols
- 1 One-dimensional analysis
- 2 Flow regimes
- 3 Film flows
- 4 Inviscid waves
- 5 Stratified flow
- 6 Influence of viscosity on large Reynolds number interfacial waves; effect of spatially and temporally induced oscillations on a turbulent flow
- 7 Large-wavelength waves; integral equations
- 8 Bubble dynamics
- 9 Horizontal slug flow
- 10 Particle dispersion and deposition
- 11 Vertical annular flow
- 12 Horizontal annular flow
- Index
- References
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.
- Type
- Chapter
- Information
- Physics of Gas-Liquid Flows , pp. 94 - 110Publisher: Cambridge University PressPrint publication year: 2013