Bubble properties of heterogeneous bubbly flows in a square bubble column: draft

Bai, Wei and Deen, Niels G. and Kuipers, J.A.M. (2009) Bubble properties of heterogeneous bubbly flows in a square bubble column: draft. In: 6th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion, 11-15 July 2009, Xi'an, China.

Preview

PDF
99Kb

Abstract:	The present work focuses on the measurements of bubble properties in heterogeneous bubbly flows in a square bubble column. A four-point optical fibre probe was used for this purpose. The accuracy and intrusive effect of the optical probe was investigated first. The results show that the optical probe underestimates bubble properties, such as, bubble velocity, local void fraction. The presence of the probe in the bubble column influences the local flow conditions. Particularly, when the probe is placed close to the liquid surface, this influence is more pronounced. Furthermore, two methods determining interfacial area were compared. The results from both methods agree quite well at low superficial gas velocity, whereas large discrepancies are found when superficial gas velocity increases. Finally, effect of column height on bubble properties was studied. No significant difference was found for the three investigated columns.
Item Type:	Conference or Workshop Item
Research Group:	Fundamentals of Chemical Reaction Engineering (FAP)
Link to this item:	http://purl.utwente.nl/publications/67393
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Show download statistics for this publication

Repository Staff Only: item control page

Metis ID: 263174