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2008.98: Anomalous bubble propagation in elastic tubes

2008.98: Alexandra Heap and Anne Juel (2008) Anomalous bubble propagation in elastic tubes. Physics of Fluids, 20 (081702). ISSN 1070-6631

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DOI: 10.1063/1.2963495

Abstract

Airway reopening is an important physiological event, as exemplified by the first breath of an infant that inflates highly collapsed airways by driving a finger of air through its fluid-filled lungs. Whereas fundamental models of airway reopening predict the steady propagation of only one type of bubble with a characteristic rounded tip, our experiments reveal a surprising selection of novel bubbles with counterintuitive shapes that reopen strongly collapsed, liquid-filled elastic tubes. Our multiple bubbles are associated with a discontinuous relationship between bubble pressure and speed that sets exciting challenges for modelers

Item Type:Article
Subjects:PACS 2003 > 47 Fluid dynamics
MIMS number:2008.98
Deposited By:Ms Lucy van Russelt
Deposited On:06 November 2008

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