Effect of Bubble Column Dimensions on Flow Regime Transitions

0166226 - UCHP-M 20013082 RIV GB eng J - Článek v odborném periodiku
Růžička, Marek - Drahoš, Jiří - Fialová, Marie - Thomas, N. H.
Effect of Bubble Column Dimensions on Flow Regime Transitions.
Chemical Engineering Science. Roč. 56, 21-22 (2001), s. 6117-6124. ISSN 0009-2509. E-ISSN 1873-4405
Grant CEP: GA ČR GA104/01/0547
Grant ostatní: INCO-COPERNICUS(XE) ERB IC15-T98-0904
Výzkumný záměr: CEZ:AV0Z4072921
Klíčová slova: stability * dimension * bubble column
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
Impakt faktor: 1.547, rok: 2001

For the first time, detailed and consistent experimental data are presented on the effect of column size on the homogeneous-heterogeneous regime transition in bubble columns. Systematic measurements were performed in air-water bubble columns of diameters 0.14, 0.29 and 0.4 m and heights between 0.1 and 1.2 m. The critical point where the homogeneous regime looses stability and the transition begins was evaluated from the drift-flux plot. The results show that both the column height and width destabilize the homogeneous regime and advance the transition. Our data were compared with predictions of two available stability theories. Both the theories agree with the data relatively well. Our results also suggest that the column aspect ratio alone cannot replace the simultaneous effect of the column height and width.
Trvalý link: http://hdl.handle.net/11104/0063362