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 language | English |
---|---|
Title of host publication | Proceedings of the 18th Australasian Fluid Mechanics Conference, AFMC 2012 |
Editors | P.A. Brandner, B.W. Pearce |
Place of Publication | Melbourne |
Publisher | Australasian Fluid Mechanics Society |
Pages | 1-4 |
Number of pages | 4 |
ISBN (Electronic) | 9780646583730 |
Publication status | Published - Dec 2012 |
Event | 18th Australasian Fluid Mechanics Conference, AFMC - 2012 - Launceston, Australia Duration: 3 Dec 2012 → 7 Dec 2012 |
Other
Other | 18th Australasian Fluid Mechanics Conference, AFMC - 2012 |
---|---|
Country/Territory | Australia |
City | Launceston |
Period | 3/12/12 → 7/12/12 |