Biomedical Engineering Reference
In-Depth Information
Figure 9.22
Magnetic forces.
vectors are plotted in Figures 9.23 and 9.24. The situation is similar to the case of
a single wire, but due to the packing of the rods, the repulsive forces are somewhat
smaller.
The second step consists of solving the Navier-Stokes equations for the flow in
the bundle (Figure 9.25, left). As expected, fluid flow is accelerated in the horizontal
gaps between the rods.
The third step is the calculation of the trajectories following (9.17). Particles are
principally captured on the surface of the rods facing the upcoming velocities (Fig-
ure 9.22, right). Few particles are captured in the attraction zones behind the rods;
none are captured on the sides, where there are repulsive forces plus an acceleration
of the flow. Note that we have supposed that the captured microparticles are not
numerous enough to modify the magnetic field and the fluid flow circulation.
Figure 9.23
Magnitude of the magnetic field.
