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Secondary Flow and Upstream Dynamics in Double Bifurcation Model

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dc.contributor.author Leong, Fong Yew
dc.contributor.author Smith, Kenneth A.
dc.contributor.author Wang, Chi-Hwa
dc.date.accessioned 2007-02-06T12:00:00Z en_US
dc.date.available 2007-02-06T12:00:00Z en_US
dc.date.issued 2007-01
dc.identifier.uri http://hdl.handle.net/1721.1/35876
dc.description.abstract Flow behavior in bifurcation models is of great importance to health risk assessments and pulmonary drug delivery. This is particularly true of secondary flow behavior in multi-bifurcation models. Previously, both numerical and experimental methods have shown that four-vortex secondary flow structures can develop in the cross-sections of grand-daughter branches. This work shows that the development of secondary flow in the grand-daughter tubes is due to local stretching of vortex lines in the upstream DT. Scaling arguments have been used to derive two critical parameters governing this particular vorticity transport problem. A simple model for vorticity generation and transport is proposed, taking into account the geometric limitations imposed by the rigid walls of the tubes. en
dc.description.sponsorship Singapore-MIT Alliance (SMA) en
dc.language.iso en en
dc.relation.ispartofseries Chemical and Pharmaceutical Engineering (CPE) en
dc.subject Bifurcation en
dc.subject Lung en
dc.subject Secondary Flow en
dc.subject Vortex Stretching en
dc.title Secondary Flow and Upstream Dynamics in Double Bifurcation Model en
dc.type Article en


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