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An experimental study of the wake of gas slugs rising in liquids

Published online by Cambridge University Press:  21 April 2006

J. B. L. M. Campos  and
J. R. F. Guedes De Carvalho
J. B. L. M. Campos
Affiliation:
Centre de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua dos Bragas, 4099 Porto Codex, Portugal
J. R. F. Guedes De Carvalho
Affiliation:
Centre de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua dos Bragas, 4099 Porto Codex, Portugal
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Abstract

A photographic study of the wakes of slugs rising in tubes of 19 mm and 52 mm internal diameter is presented. The dependence of the flow pattern in the wake upon the Reynolds number of the rising slug, R, is established for different slug lengths. Values of R covered in this study are in the range 25 to 1.3 × 104. For low values of R the flow pattern in the wake is laminar and axisymmetric and values of wake length and wake volume could be determined from the photographs: these values were correlated with the other variables in the system by means of dimensional analysis.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 196 , November 1988 , pp. 27 - 37
Copyright
© 1988 Cambridge University Press

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