Post-stenotic flow in an artery

T. J. Barber, E. Jarratt, K. Kabir, A. Simmons

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)

Abstract

Computational fluid dynamics simulation of stenosed arteries, combined with ex-vivo measurement for validation, allows the analysis of fluid dynamic quantities that are difficult to measure in an in-vivo environment. The analysis of fluid dynamics properties such as wall shear stress, velocity, viscosity and pressure is important in understanding the likely causes and ongoing effects of stenosis. In this study, a three-dimensional computational fluid dynamics simulation is conducted of a representative stenosed artery [5]. A physiological inlet condition, representing a femoral artery, is used as the transient inlet condition. Concurrently, an experimental study is conducted of the identical geometry, and laser sheet visualization is used with a continuous Nd-YAG laser to highlight regions of the flowfield, including the post-stenotic jet core field, and the associated recirculation regions. Due to the retrograde flow for a section of the pulsatile profile, a core region surrounded by recirculation regions is also found proximal to the stenosis. High values of wall shear stress and oscillatory values of wall shear stress (varying in both space and time) are observed, which are indicators of possible future cell damage.

Original languageEnglish
Title of host publicationProceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012
EditorsP.A. Brandner, B.W. Pearce
Place of PublicationMelbourne
PublisherAustralasian Fluid Mechanics Society
Pages1-4
Number of pages4
ISBN (Electronic)9780646583730
Publication statusPublished - Dec 2012
Event18th Australasian Fluid Mechanics Conference, AFMC - 2012 - Launceston, Australia
Duration: 3 Dec 20127 Dec 2012

Other

Other18th Australasian Fluid Mechanics Conference, AFMC - 2012
Country/TerritoryAustralia
CityLaunceston
Period3/12/127/12/12

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