|
Eric-
I
looked at your problem... One novice to another. I found that your mesh size is
so small compared to the grid specified. You could be there all day waitingor
your computer will hang up like mine did and I had to kill FEMM. Your grid was
100 and your mesh was 0 .10 which is a lot of mesh. This is not necessary
in the air region. I changed the mesh size to 20.
I also
assigned a boudary condition to the outer circle to simulate infinity. I'veseen
this in some of the sample problems. Go under "Properties", "Boundary", "Add
Property". Change the name to "Infinity" or as David likes "Absorbing Boundary".
Select BC type on the pull down to be "Mixed". This make some of the othe boxes
available. Put the value of Co = 6962160 (ask David where this number comes
from). Click OK. Now you have to assign it to the outer circle. Select the arc
button. Right click on each semi-circle and hit the space bar. The pop up window
come up. Set "Boundary Cond." to "infinity".
I got
your model to work with those two changes.
Good
luck!
Kevan
Guy
|