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Multiphase Science and Technology
SJR: 0.124 SNIP: 0.222 CiteScore™: 0.26

ISSN Imprimer: 0276-1459
ISSN En ligne: 1943-6181

Multiphase Science and Technology

DOI: 10.1615/MultScienTechn.v20.i1.10
pages 1-24

STUDIES OF THE SLUG-ANNULAR REGIME TRANSITION IN TWO-PHASE FLOW IN HORIZONTAL PIPES

S. Jamari
Nigerian National Petroleum Corporation, Nigeria
Colin P. Hale
Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
Geoffrey F. Hewitt
Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
S. M. Richardson
Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK

RÉSUMÉ

This paper discusses an investigation of the slug-annular transition in two-phase (air-water and air-oil) flow in a 78 mm internal diameter horizontal tube. The experiments were conducted at pressures of approximately 0.1 and 0.3 MPa (abs). The air and liquid superficial velocities ranged between 5.0−24.0 m/s and 0.05−0.2 m/s, respectively. The transition was investigated using visual observation (aided by video photography), evaluation of pressure drop and average holdup data, studies of slug body holdup, and axial view photography. It was concluded that the slug-annular transition occurred when the slug body holdup fell to around 30%. Using a standard holdup correlation to predict this condition led to satisfactory predictions of the transition.


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