106
Dynamics
of
the Vascular System
m-
<a-
E
20-
U’
H
-
15-
-
i4
g
5-
Y
10-
JI
I
I
1
’
I
I
I
I
I
I
Fig.
4.3.4:
Apparent phase velocity compared to true phase velocity in a viscoelastic tube.
The influence of wave reflections on apparent phase velocity at
low
frequencies is clearly
seen. At high frequencies the two velocities approach a somewhat constant value. (From
Li
et al. (1 980).
