You have no source for your magnetic field. Probably it is a current that is passing through you cooper zones. Look to the attachement for example ----------------------------------------------------------------- Alexandru ANDREI andreial@xxxxxxx ----------------------------------------------------------------- -----Original Message----- From: femm-bounces@xxxxxxxxxxxxxxxxxxxxxx [mailto:femm-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Jeff Peery Sent: 26 martie 2004 20:08 To: femm@xxxxxxxxxxxxxxxxxxxxxx Subject: [FEMM] modeling coils??? 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
<<attachment: winmail.dat>>