Full Content is available to subscribers

Subscribe/Learn More  >

Propagation of an Air Finger Into a Fluid Filled Bifurcation

[+] Author Affiliations
Benjamin L. Vaughan, Jr., James B. Grotberg

University of Michigan, Ann Arbor, MI

Paper No. SBC2010-19079, pp. 251-252; 2 pages
  • ASME 2010 Summer Bioengineering Conference
  • ASME 2010 Summer Bioengineering Conference, Parts A and B
  • Naples, Florida, USA, June 16–19, 2010
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-4403-8
  • Copyright © 2010 by ASME


The occlusion of pulmonary airways can be caused by many respiratory diseases such as respiratory distress syndrome. It is believed that these occluded airways are reopened by the propagation of an air finger. The mechanics of airway reopening have been studied in-depth for an individual airway [1,2] without considering the frequent branching of pulmonary airways. The presence of a bifurcation leads to the question of whether the propagating air finger will clear both branches of the airway or will propagate through a single branch, leaving the other branch occluded. The propagation of a finite length liquid plug through a fixed bifurcation has been studied experimentally [3, 4]. We wish to develop a numerical model for the propagation of an air finger through bifurcating channel filled with a viscous fluid. In this model, the air finger is driven by a pressure difference between the parent channel and the two daughter branches. The presence of an additional pressure difference between the two branches can cause unsymmetrical splitting of the air finger and, above a critical pressure difference, prevent the clearance of both branches.

Copyright © 2010 by ASME
Topics: Fluids , Bifurcation



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In