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Magnetic Insulation not applying correctly
Posted 8 mag 2017, 02:07 GMT-4 2 Replies
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Hi everyone,
I'm working on a figure-8 coil model that is widely used in medical treatment for neural diseases.
I have successfully modeled the kind of coil I wanted and created a boundary volume around it.
I'm interested in simulating its magnetic field intensity in both 2D planes and in 3D volume.
I have a problem that the magnetic insulation boundary conditions apply themselves to the coil itself - not to the boundary volume as planned, causing the results to appear only inside the conductors. For the boundary volume it tells that magnetic insulation is "not applicable".
I have attached a screenshot of the compiled result I got.
Would anyone have any ideas what could cause this.
Thank you for the help!
I'm working on a figure-8 coil model that is widely used in medical treatment for neural diseases.
I have successfully modeled the kind of coil I wanted and created a boundary volume around it.
I'm interested in simulating its magnetic field intensity in both 2D planes and in 3D volume.
I have a problem that the magnetic insulation boundary conditions apply themselves to the coil itself - not to the boundary volume as planned, causing the results to appear only inside the conductors. For the boundary volume it tells that magnetic insulation is "not applicable".
I have attached a screenshot of the compiled result I got.
Would anyone have any ideas what could cause this.
Thank you for the help!
Attachments:
2 Replies Last Post 11 mag 2017, 04:07 GMT-4
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Posted:
8 years ago
Maybe I was wishing too much... The guides/tutorials of Comsol aren't very comprehensible and the applications they demonstrate are very limited.
I looked up comments about using axisymmetrical 2D models but those just don't work when you need several axis for the coil. The round single axis coils are getting fewer and fewer especially at more modern applications.
I really hoped to get help from the community but this is rather sad. Even after 6 months of studying the use I'm glad I have used this on student licence - defiantly not worth the money considering the guides and support you get for learning. I guess I just have to find some other program.
I looked up comments about using axisymmetrical 2D models but those just don't work when you need several axis for the coil. The round single axis coils are getting fewer and fewer especially at more modern applications.
I really hoped to get help from the community but this is rather sad. Even after 6 months of studying the use I'm glad I have used this on student licence - defiantly not worth the money considering the guides and support you get for learning. I guess I just have to find some other program.
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Posted:
8 years ago
Hi Pauli,
Don't give up so quickly!! As you surely know, COMSOL applies continuity to interior boundaries by default (if you finish your geometry with a Union, as you did; otherwise, you can set that condition manually).
Apart from that, the infinite elements are very useful to model the far fields, did you use them?
If you share your model, perhaps the rest of us can help you a bit.
Regards,
Jesus.
Don't give up so quickly!! As you surely know, COMSOL applies continuity to interior boundaries by default (if you finish your geometry with a Union, as you did; otherwise, you can set that condition manually).
Apart from that, the infinite elements are very useful to model the far fields, did you use them?
If you share your model, perhaps the rest of us can help you a bit.
Regards,
Jesus.