Simulation of electric and magnetic fields using FEMM - FH Aachen ...

Figure 3-2 Problem definition
3.1.3 Draw boundary
Draw a boundary to be the solution region that we are interested in. The shape and area of
this region can be selected as you want. Here, we draw it as a square, so that we can have an
axisymmetric solution. Point nodes at (-5, -5), (-5, 11), (11, -5), (11, 11), then connect them
to make a square boundary.
3.1.4 Create a new coil
Draw 2 squares in the center of boundary to make the core. Point nodes at (0, 0), (0, 6), (6, 0),
(6, 6). Connect the nodes to make the first square. Point nodes at (1, 1), (1, 5), (5, 1), (5, 5),
connect them to make the second.
Figure 3-3 Core
Point nodes at (-0.25, 4.5), (-0.25, 1.5), (0, 4.5), (0, 1.5), (1, 4.5), (1, 1.5), (1.25, 4.5), (1.25,
1.5). Then connect them as shown to make the coil.
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Figure 3-4 Coil