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Three-dimensional pulsatile flow through asymmetrically and symmetrically constricted vessels

Three-dimensional pulsatile flow through asymmetrically and symmetrically constricted vessels
Three-dimensional pulsatile flow through asymmetrically and symmetrically constricted vessels
Comparisons are made between two- and three-dimensional pulsatile flow through asymmetrically and symmetrically constricted vessels. Most significantly, mean shear stress distributions and levels of oscillation (which have important implications for the prediction of stenosis pathology) are very different, both qualitatively and with respect to peak values. Maximum mean shear stresses are almost 40% higher for the asymmetric constrictions. They are also approximately 30% higher than produced in two-dimensional simulations. The distribution of oscillating wall shear stress suggests ways in which secondary lesions may develop. We also show that the so-called 'vortex wave' produced by an asymmetric two-dimensional constriction does not exist in a three-dimensional simulation at the Reynolds and Strouhal numbers of 600 and 0.03 considered here.
0791816680
525-526
American Society Of Mechanical Engineers (ASME)
Bressloff, N.W.
4f531e64-dbb3-41e3-a5d3-e6a5a7a77c92
Bressloff, N.W.
4f531e64-dbb3-41e3-a5d3-e6a5a7a77c92

Bressloff, N.W. (2001) Three-dimensional pulsatile flow through asymmetrically and symmetrically constricted vessels. In Proceedings of Bioengineering Conference: Summer Bioengineering Conference. American Society Of Mechanical Engineers (ASME). pp. 525-526 .

Record type: Conference or Workshop Item (Paper)

Abstract

Comparisons are made between two- and three-dimensional pulsatile flow through asymmetrically and symmetrically constricted vessels. Most significantly, mean shear stress distributions and levels of oscillation (which have important implications for the prediction of stenosis pathology) are very different, both qualitatively and with respect to peak values. Maximum mean shear stresses are almost 40% higher for the asymmetric constrictions. They are also approximately 30% higher than produced in two-dimensional simulations. The distribution of oscillating wall shear stress suggests ways in which secondary lesions may develop. We also show that the so-called 'vortex wave' produced by an asymmetric two-dimensional constriction does not exist in a three-dimensional simulation at the Reynolds and Strouhal numbers of 600 and 0.03 considered here.

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More information

Published date: 2001
Additional Information: BED Vol 50
Venue - Dates: Bioengineering Conference: Summer Bioengineering Conference, Snowbird, USA, 2001-06-26 - 2001-06-30

Identifiers

Local EPrints ID: 21894
URI: http://eprints.soton.ac.uk/id/eprint/21894
ISBN: 0791816680
PURE UUID: cecc2851-9522-47bd-9f4c-413b689142b9

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Date deposited: 28 Feb 2007
Last modified: 08 Jan 2022 03:47

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