Re: NEC-LIST:Magnetic field (DC field)

Andrea,
I think you had a hunch that NEC will have a hard time simulating a DC
field. I hope you know that you are dealing with magnetostatics when it
comes to the earth's magnetic field.

You may want to bring this question to a USENET newsgroup where there are
people who have tried out other field solvers. e.g. sci.physics,
sci.physics.electromag, sci.physics.relativity, sci.physics.research.

I suggest you try FEM rather than NEC which is base on MoM. FEM Magnetics
aka Quickfield (Russian).
http://www.quickfield.com/
The Russian program was reviewed in IEEE Spectrum in Dec. 1993. The way I
see it, it is a very good 2-D FEM program.

You might also want to check out PDEase, a FEM program at one time sold by
Macsyma, Inc. i.e. if they are still in bussiness :-) .
http://www.mathstat.com.au/products/mathematics/pdease_2d.htm
At one time they have a lot of ads in IEEE Spectrum and other places. I
would consider it to be a reasonably flexible 2-D FEM program.

AFAIK there was a review of it in Spectrum (someone help me, date and
publication...). You have to write a batch file giving the boundary
conditions, equations, etc.

Just my 2 ¢ worth.
Good Luck,

Tim Foo

                      andrea.lommi_at_lib
                      ero.it To: nec-list_at_gweep.ca
                      Sent by: cc: (bcc: Wan Juang
Foo/ece/staff/npnet)
                      nec-list-admin_at_g Subject: NEC-LIST:Magnetic
field
                      weep.ca

                      09/26/02 12:01
                      AM

Hi to everybody,

do you know how to simulate (using NEC or other tools) the magnetic
field inducted on an object when it is put into a magnetic field like
the earth's one?
Probably NEC is not suitable for this kind of analisys, do you know a
specifical software?

Thanks a lot

Andrea

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