Expiratory flow in a rigid three-generation airway with one collapsible segment

X. L. Yang, Yang Liu, J. M. Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

The expiratory flow in a rigid three-generation airway with one collapsible segment was numerically studied using fluid-structure interaction technique. A self-developed finite element method code was used to calculate the nonlinear deformation of the thin-walled structure, whereas a commercial computational fluid dynamics solver was used to resolve the fluid flow. The elastic tube in the second-generation branch collapsed into wave number N =3 mode. The deformation of the collapsible tube increased the resistance to the fluid flow and formed a jet that altered the downstream flow pattern significantly.
Original languageEnglish
Pages (from-to)553-563
Number of pages11
JournalCommunications in Numerical Methods in Engineering
Volume25
Issue number5
DOIs
Publication statusPublished - 20 Aug 2009

Keywords

  • CFD
  • Collapsible tubes
  • Expiratory flow
  • Fluid-structure interaction

ASJC Scopus subject areas

  • Software
  • Modelling and Simulation
  • Engineering(all)
  • Computational Theory and Mathematics
  • Applied Mathematics

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