Case Studies of the Human Cardiovascular System - Computational Hemodynamics: Theory, Modelling and Applications - page 189

Fig. 7.8 Comparison of the measured and predicted local axial velocity profile. Velocity profiles
at selected lines of the stenosed carotid bifurcation from a to d are examined using the predicted
and experimental data. Axial velocities are over-predicted around 30-55 % in comparison to the
measurements. It may be noted that the results are relatively accurate for flow in the ECA
noted that the prediction error for the present investigation is comparable to those
that have been obtained through other researchers (Bertolotti et al. 2001; Lei et al.
2001; Zhang et al. 2008), who reported an error ranging from 1 to 47 % when com-
pared to PIV or LDA measurements.
Figure 7.9 illustrates the predicted and measured vector plots of secondary flows
at three selected cross-sectional planes of the stenosed carotid artery. The recircula-
tion regions of secondary flows are successfully captured by CFD and the predict-
ed vortex core locations compared favourably with measurements. The predicted