Journal ArticleDOI
Flooding and churn flow in vertical pipes
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TLDR
In this paper, a 32 mm dia vertical pipe with various forms of liquid outlet, namely a porous wall, a tapered outlet, and a square-edged outlet, was used to investigate the effect of churn flow on the penetration rate.About:
This article is published in International Journal of Multiphase Flow.The article was published on 1991-01-01. It has received 103 citations till now. The article focuses on the topics: Water flow & Two-phase flow.read more
Citations
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Journal ArticleDOI
Prediction of the slug-to-churn flow transition in vertical two-phase flow
TL;DR: In this paper, an assessment of the various viewpoints on the slug-to-churn flow transition in vertical upward flow in the light of recent experimental results obtained at Harwell Laboratory is made.
Journal ArticleDOI
Disturbance wave development in two-phase gas–liquid upwards vertical annular flow
TL;DR: In this article, the authors investigated the existence, development and translation of disturbance waves in upward, gas-liquid annular flows. And they found that the frequency of occurrence of the disturbance waves first increases away from the inlet as these waves form, reaches a maximum at a length between 7.5 and 15 pipe diameters, and then decreases again.
Journal ArticleDOI
Liquid entrainment, droplet concentration and pressure gradient at the onset of annular flow in a vertical pipe
TL;DR: In this article, an isokinetic probe was employed to measure the local mass fluxes of gas and entrained liquid droplets in the core region; pressure gradient was also measured.
Journal ArticleDOI
Countercurrent gas–liquid flow in inclined and vertical ducts — I: Flow patterns, pressure drop characteristics and flooding
A. Zapke,D.G. Kröger +1 more
TL;DR: In this article, an experimental investigation into adiabatic gas-liquid counterflow in inclined and vertical rectangular ducts with a square-edged gas inlet is conducted, where water, methanol, propanol, air, argon, helium and hydrogen are used as working fluids.
Journal ArticleDOI
A slugh-churn flow model for small-diameter airlift pumps
F. de Cachard,Jean-Marc Delhaye +1 more
TL;DR: In this paper, a new steady state air-lifts model is proposed to predict the pressure gradient in the riser by a combination of specific models describing slug and churn flow, based on the available literature on two-phase flow.
References
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Book ChapterDOI
A critical review of the flooding literature
S. George Bankoff,Sang Chun Lee +1 more
TL;DR: In the absence of electromagnetic force fields, thermocapillary effects or concentration-capillary effects, countercurrent flow can be sustained only as a result of the difference in the gravitational force per unit volume on the gas and on the liquid as discussed by the authors.
Journal ArticleDOI
The effect of viscosity on the flooding conditions in wetted wall columns
TL;DR: The gas velocities for flooding in a wetted wall column have been measured as a function of liquid viscosity and flow rate as mentioned in this paper, and they were found to be somewhat higher than those predicted by D avidson and S hearer.
Journal ArticleDOI
Flooding in vertical two-phase flow
TL;DR: In this article, the authors describe a series of experiments to observe and photograph the flooding process and show that flooding occurs as a result of the formation and motion of a large disturbance wave on the surface of the liquid film.