Quantitative criteria to define flow patterns in micro-capillaries

Hydrodynamics of gas-liquid systems has been studied by high-speed camera. The flow patterns of CO2/water-based fluids were investigated in three glass microreactors having different geometries. Four main regimes were observed: bubbly, slug, slug-annular and annular flow. The forces being responsible for the pattern formation were quantified using dimensionless numbers: Bond (Bo), Reynolds (Re), Weber (We) and Capillary (Ca) numbers. The study showed that the interfacial tension and the gas inertia are the main forces that drive the interface.


Published in:
Chemical Engineering Journal, 160, 882-890
Presented at:
10th International Conference on Microreaction Technology (IMRET 10), New Orleans, LA, Apr, 2008
Year:
2010
Publisher:
Elsevier
ISSN:
1385-8947
Keywords:
Laboratories:




 Record created 2010-11-26, last modified 2018-03-17


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