MIXING INDUCED BY AIR SLUGS RISING IN NARROW COLUMNS OF WATER

• Type: Article in International Scientific Journal
• Date: 1988

Authors

CAMPOS, JBLM (Author) FEUP; DECARVALHO, JRFG (Author) Other

Journal

Title: Chemical Engineering Science

Vol. 43

Pages: 1569-1582

ISSN: 0009-2509

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 15 Citations

ISI Web of Science

Scopus - 16 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14