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Re: B-H Curve MagnetoDynamics2D

Posted: 18 Nov 2013, 11:06
by akirahinoshiro
I think you need the coefficents of the cubic spline function.
In your case file there are german words so I think you can handle this site:
http://www.arndt-bruenner.de/mathe/scri ... spline.htm
I hope this will help.

Re: B-H Curve MagnetoDynamics2D

Posted: 18 Nov 2013, 12:18
by Bavragor
You are right. I'm from germany. Thanx for the link.
But the problem is how to give the coefficients so that elmer understand it.

btw: Thanx a lot for the help.

Re: B-H Curve MagnetoDynamics2D

Posted: 18 Nov 2013, 12:24
by mzenker
Hi,

you can use a table and let Elmer do the cubic spline, see here. That is not exactly what you want, though, and might not solve your problem. You might also try to define your spline using MATC or a user defined function, the latter being favorable in execution time.

HTH,

Matthias

Re: B-H Curve MagnetoDynamics2D

Posted: 07 Jan 2014, 17:39
by Bavragor
Hello again,

I just want to say, that i wasn't able to solve the problem with your help. But I'm hoping that someone will get it and write it in the documentation :)

Thx to all who tried to help me

Re: B-H Curve MagnetoDynamics2D

Posted: 07 Jan 2014, 17:54
by mzenker
Hi,

are you saying that my last post doesn't answer this question:
Bavragor wrote: But the problem is how to give the coefficients so that elmer understand it.
Or what else is your problem?

Matthias

Re: B-H Curve MagnetoDynamics2D

Posted: 07 Jan 2014, 18:02
by mzenker
In the testcase, the H-B curve is given as a table in an extra file. If you can represent your permeability that way, you can take the testcase and try to modify it so that it suits your needs.

HTH,

Matthias