Multiphase Science and Technology A Quarterly

ISSN for PRINT: 0276-1459

For Online Access

Best Paper Award Selection - Editorial Board Site

1994, Volume8

Issue 1-4

786 pages

Issue price - $560.00

A. E. Dukler
University of Houston, Chemical Engineering Department, Houston, Texas, 77204, USA

Professor J. Fabre
Insitut National Polytechnique de Toulouse, Institut de Mechanique des Fluides (UA CNRS 005), Av. C. Soula 31400, Toulouse, France

This contribution begins with a discussion of the occurrence and characteristics of slug flow. Slug flow results in high liquid velocities and hence high pressure gradients and large fluctuations in pressure gradient. However, it does provide a means of transporting large amounts of liquid. The most prevalent model of slug flow is the cell model in which a unit cell encompassing the slug and its associated stratified region is set up. To close this model, various relationships are required (slug velocity, void fraction in the slug, slug frequency etc.) and available relationships of this type are discussed. The mixing zone at the slug front is a particularly important one and is discussed in detail. Evaluation of the statistical characteristics of slug flow can be extremely useful in dealing with design problems (for example the maximum length of a slug which influences the separation equipment) and such distributions are discussed. Finally, the two-equation model for gas-liquid slug flow is presented.

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