Experimental investigation of carotid artery haemodynamics in an anatomically realistic model. (11th November 2009)

• Record Type: Journal Article
• Authors: Buchmann, Nicolas A.; Jermy, Mark C.; Nguyen, Chuong V.
• Is Part Of: International journal of experimental and computational biomechanics. Volume 1:Number 2(2009)
• Page Start: 172
• Page End: 192
• Publication Date: 2009-11-11
• Subjects: wall shear stress -- WSS -- particle image velocimetry -- interfacial PIV -- carotid artery -- haemodynamics -- patient specific -- experimental bimechanics -- modelling -- fluid mechanics -- cardiovascular disease -- blood flow -- simulation; Human mechanics -- Periodicals; Biomechanics -- Computer simulation -- Periodicals; Biomechanics -- Methodology -- Periodicals; 612.76
• Languages: English
• ISSNs: 1755-8735

Abstract

Fluid mechanic forces play a key role in the early development and progression of cardiovascular diseases, which predominantly occurs in areas of disturbed flow and low wall shear stress (WSS). In the present study, we perform particle image velocimetry (PIV) measurements in an anatomically realistic transparent flow phantom of a human carotid artery. Steady blood flow conditions are simulated and a novel interfacial PIV technique (iPIV) is introduced to measure WSS with increased spatial resolution and accuracy compared to conventional methods. The branching of the carotid artery introduces significant secondary flow motion with flow separation and reversal only occurring in the external carotid artery. Wall shear stress is measured along the inner and outer vessel walls and is on average higher in the internal carotid and lower in the external carotid artery. Furthermore, results are compared to those in a geometrical idealised model and with previously published WSS data.