Three-dimensional simulation of a three-phase draft-tube bubble column

Citation
Nt. Padial et al., Three-dimensional simulation of a three-phase draft-tube bubble column, CHEM ENG SC, 55(16), 2000, pp. 3261-3273
Citations number
25
Categorie Soggetti
Chemical Engineering
Journal title
CHEMICAL ENGINEERING SCIENCE
ISSN journal
00092509 → ACNP
Volume
55
Issue
16
Year of publication
2000
Pages
3261 - 3273
Database
ISI
SICI code
0009-2509(200008)55:16<3261:TSOATD>2.0.ZU;2-J
Abstract
Three-dimensional simulations of a three-phase flow in conical-bottom draft -tube bubble columns were performed using a finite-volume flow simulation t echnique. Simulated gas volume fraction and column circulation times agree with the experimental observations of Pironti el al. (Chemical Engineering Journal, 60, 155-160). Furthermore, the simulations showed the same loss of column circulation as observed experimentally when the column was operated with the draft-tube in its highest position. The simulation code employed an unstructured grid method along with a multifield description of the mult iphase flow dynamics. Modeled physical phenomena included momentum exchange and turbulence due to both sheer and slip among phases. (C) 2000 Elsevier Science Ltd. All rights reserved.