[Getdp] Skin effect

[Christophe Geuzaine]

John M. Correa wrote:
> I am using Getdp for some time with amazing results and capabilities not 
> previously seen with other commercial software. Congratulations for all the 
> crew.
> My questions is about a Magnetodynamic simulation extracted from the Getdp 
> Manual. I ran the example CoreMassive.pro with the resolution MagDyn_av_2d 
> several times but with different frequencies :50, 100,500, 1000 Hz and plot 
> the induced current in the core, from the center to the boundary, but for all 
> the frequencies i dont see the Skin Effect, instead i observe a linearly 
> decaying current from border to center for all the frequencies tested.
> For all parameters involved the skin depth must be in the order of 1 cm. (and 
> the Core is 5 cm. radius) so for 50 Hz we teoretically will see the typical 
> Bessel style function describing the induced current but not a line as my 
> simulation presents. A also refined the mesh but with no change in results.
> Could you please indicate me what is wrong with my analysis, because i tested 
> with other programs the same configuration and with the expected results.
> Thanks in advance
> 

Did you move "Core" from the non-conducting domain ("DomainCC_Mag") to
the conducting domain ("DomainC_Mag")? (Also, don't forget to change the
"Voltage_2D" constraint.)

Christophe

-- 
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org