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Coalescence of two gas slugs rising in a vertical column of liquid

Título
Coalescence of two gas slugs rising in a vertical column of liquid
Tipo
Artigo em Revista Científica Internacional
Ano
1996
Revista
Vol. 51 20
Páginas: 45-54
ISSN: 0009-2509
Editora: Elsevier
Indexação
Publicação em ISI Web of Science ISI Web of Science
COMPENDEX
Classificação Científica
FOS: Ciências da engenharia e tecnologias > Engenharia química
Outras Informações
ID Authenticus: P-001-F21
Resumo (PT): This work describes an experimental investigation about the coalescence of pairs of gas slugs rising in vertical columns of liquids covering a wide range of liquid viscosities. The experiments were performed in columns with 19, 32 and 52 mm of internal diameter and slug coalescence was followed by means of a new experimental technique, based on the signals of differential pressure transducers. Important data reported in this work are: - the minimum distance between slugs above which there is no interaction, Imin; - the velocity of approach of the trailing slug as a function of its distance to the leading one. Values of I min are shown to be related to the flow pattern in the wake of liquid behind gas slugs and correlations are provided for the determination of {min; in all cases imin is about four times the wake length, I w.
Abstract (EN): This work describes an experimental investigation about the coalescence of pairs of gas slugs rising in vertical columns of liquids covering a wide range of liquid viscosities. The experiments were performed in columns with 19, 32 and 52 mm of internal diameter and slug coalescence was followed by means of a new experimental technique, based on the signals of differential pressure transducers. Important data reported in this work are: -the minimum distance between slugs above which there is no interaction, l(min); -the velocity of approach of the trailing slug as a function of its distance to the leading one. Values of l(min) are shown to be related to the Row pattern in the wake of liquid behind gas slugs and correlations are provided for the determination of l(min); in all cases l(min) is about four times the wake length, l(w).
Idioma: Inglês
Tipo (Avaliação Docente): Científica
Nº de páginas: 10
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