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

Figure 1-16 X-Y plot of field Values dialogue box
But before that, we need to select a contour to decide which part of the object which we are
interested in.
Switch to Contour mode by pressing the Contour Mode toolbar button. Now we can define a
contour along which the properties will be plotted. There are three methods to add points or
areas to a contour :
1. Left Mouse Button Click adds the nearest input node to the contour;
2. Right Mouse Button Click adds the current mouse pointer position to the contour;
3. Key displays a point entry dialog that allows you to enter in the coordinates of a
point to be added to the contour.
Here we need the plot along a radius. So we press and right click on (0,0) and (14.1, 14.1)
to draw two points, making up a segment as following. The contour is a vector so we have to
decide its direction as well. If we left click on the graph, then the program will automatically
choose the nearest node as the point.
Figure 1-17 Contour
Now we can draw the plot we need to analyze the properties along the contour. We need E,t
plot (tangential electrical field intensity) here.