MIXING INDUCED BY AIR SLUGS RISING IN NARROW COLUMNS OF WATER

• Tipo: Artigo em Revista Científica Internacional
• Data: 1988

Autores

CAMPOS, JBLM (Autor) FEUP; DECARVALHO, JRFG (Autor) Outra

Revista

Título: Chemical Engineering Science

Vol. 43

Páginas: 1569-1582

ISSN: 0009-2509

Editora: Elsevier

Indexação

ISI Web of Knowledge - 15 Citações

ISI Web of Science

Scopus - 16 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

Outras Informações

ID Authenticus: P-001-TMC

DOI: 10.1016/0009-2509(88)85148-0

Abstract (EN): A series of equal-sized slugs of air was injected at the bottom of water columns of internal diameters 19 and 32 mm, respectively. The dispersion of tracer initially contained in the lower half of the columns was measured. A simple physical model was developed based on the idea that dispersion is mainly due to the action of the wakes of slugs, considered to be fully mixed; this model accounts remarkably well for the experimental results observed. An alternative dispersion model, based on the analogy with one-dimensional molecular diffusion, is also presented and the relationship between the two models is discussed. Experiments were performed for a range of values of slug volume, the number of slugs injected and the frequency of slug injection. © 1988.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14