[FEMM] modeling coils???

[Jeff Peery <jeffpeery@yahoo.com>]

Hello, I am new to using FEMM and to electro magnetism - I'm a mechanical engineer fresh out of Univ. or Washington!  I have a new job and I'm jumping right into this stuff.  I'm looking at modeling the field that results from a magnetric flow meter.  I am pretty much following example 2 from the FEMM website; however the example shows a transverse slice of the inductor and I want to model a axial slice so I am confused about how to do this.  I attached my current FEMM file.

 

basicallly I have a simple inductor and I want to know what the mag lines look like.  I setup the geometry, meshed it, applied material properties, and a boundary condition and ran the solution.  the results don't look right. My confusion is that the flux lines should parrallel the inductor, but instead they radiate from the inductor ( in a circular fashion with the inductor at the center). so how does FEMM know how my coils are oriented? From the results it looks as thought FEMM thinks I have a transverse slice of my inductor, however what I want to model is an axial slice. 

 

Can anyone offer some advice? thanks!

 

Jeff

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