Figure 5: Pressure distribution of blood flow for diameter 300 µm
constant permeability. (a) \(\varepsilon\) =0.5. (b) \(\varepsilon\) =1.
Variable Re (0.1, 1, 5).
Figure 6 shows the velocity profiles at two different porosity values.
Due to the curvature of the vessel, the velocity cannot be the same as
in a straight tube. The maximum velocity will move towards the curvature
axis. An increase in porosity will lead to decreases the velocity and it
can move the maximum velocity away from the centre [28]. As it is
pointed out in [29] the variation of flow velocity increases and
accelerate towards the inner diameter of the bent part of the vessel in
the cases of constant porosity (\(\varepsilon\) =0.5, 1). Furthermore,
the Figure 5 shows the magnitudes of streamwise velocities to be
gradually higher with decrease of Re at bend near the inner diameter.
For all Re cases, the numerical results did not predict a huge increase
in velocity along the bend vessel due to the small values of Reynolds
number.