2010.80: Tube geometry can force switchlike transitions in the behavior of propagating bubbles
2010.80: A. de Lozar, A. Heap, F. Box, A.L. Hazel and A. Juel (2009) Tube geometry can force switchlike transitions in the behavior of propagating bubbles. Physics of Fluids, 21 (101702). pp. 1-4. ISSN 1089-7666
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Microscale process engineering requires precise control of bubbles and droplets. We investigate geometry-induced control and find that a centered constriction in the cross section of rectangular tubes can lead to new families of steadily propagating bubbles, which localize in the least-constricted regions of the cross section. Tuning the constriction geometry can cause a switchlike transition from centered to localized bubbles at a critical value of the flow rate: a mechanism for flow-rate-driven bubble control. The accompanying large change in bubble volume could be significant for liquid recovery applications.
|Subjects:||MSC 2000 > 76 Fluid mechanics|
|Deposited By:||Ms Lucy van Russelt|
|Deposited On:||25 August 2010|