Transient flow in a tube with prescribed moving wall

Hao Liu, Takami Yamaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interaction between blood flow and vessel in terms of three-dimensional, complex geometry with moving wall can show complicated variability in flow pattern as well as in shear stress. Transient flow in a tube with prescribed moving wall was numerically studied by using a newly developed, FVM (finite volume method)-based computational mechanical system that has been verified to be robust and efficient in resolving highly unsteady, vortex flow in blood vessel in an ALE manner. In this study, we present preliminary results of unsteady flows in a model of coronary artery with Muscle Bridge that constricts the artery. The transient flow downstream the moving constriction were observed, that was characterized by complicated combination of a train of longitudinal vortex wave and strong secondary flow. This time-varying vortex flow resulted in significant time-dependence of the wall shear stress distribution both in space and in time.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Bioengineering Division (Publication) BED
PublisherASME
Pages231-232
Number of pages2
Volume42
ISBN (Print)0791816117
Publication statusPublished - 1999 Dec 1
Event1999 Bioengineering Conference - Big Sky, MT, USA
Duration: 1999 Jun 161999 Jun 20

Other

Other1999 Bioengineering Conference
CityBig Sky, MT, USA
Period99/6/1699/6/20

ASJC Scopus subject areas

  • Engineering(all)

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