Liquid entrainment, droplet concentration and pressure gradient at the onset of annular flow in a vertical pipe

@inproceedings{Barbosa2002LiquidED,
  title={Liquid entrainment, droplet concentration and pressure gradient at the onset of annular flow in a vertical pipe},
  author={Jader Riso Barbosa and Geoffrey F. Hewitt and Gregor K{\"o}nig and Stephen M. Richardson},
  year={2002}
}
Abstract There is a dearth of data on flow parameters in the transition region between churn and annular flow. To address this deficiency, adiabatic air–water experiments were carried out in a vertical test section (31.8 mm internal diameter, 10.8 m long) in which an isokinetic probe was employed to measure the local mass fluxes of gas and of entrained liquid droplets in the core region; pressure gradient was also measured. The tests covered pressures ranging from 1.7 to 5 bara and liquid… CONTINUE READING

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