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3 Posts

Posted - Oct 03 2017 :  01:57:58  Show Profile  Reply with Quote
I'm modeling two coils using input data with two different units. This isn't a problem for FastHenry as the .Units command is interpreted correctly.

I can see how FastModel wouldn't normally need units, since none are shown nor need to be to get an idea of relative sizes.

This seems to fail when using two different units in a single FH input file. Is this expected behavior? Is the only work around to convert the units to being the same?


Here's an example file that shows the problem for FastModel:

*Unitless Model*
.default nwinc=1 nhinc=1 h=10 w=10 
.default z=0 

.Units um 
N111 x=100 y=0 z=100
N112 x=100 y=100 z=100
E11 N111 N112

N121 x=100 y=100 z=100
N122 x=0 y=100 z=100
E12 N121 N122

N131 x=0 y=100 z=100
N132 x=0 y=0 z=100
E13 N131 N132
N141 x=0 y=0 z=100
N142 x=90 y=0 z=100
E14 N141 N142
.external N142 N111

.Units mm
N211 x=100 y=0 z=0
N212 x=100 y=100 z=0
E21 N211 N212

N221 x=100 y=100 z=0
N222 x=0 y=100 z=0
E22 N221 N222

N231 x=0 y=100 z=0
N232 x=0 y=0 z=0
E23 N231 N232
N241 x=0 y=0 z=0
N242 x=90 y=0 z=0
E24 N241 N242
.external N242 N211
.freq fmin=1e6 fmax=1e6


350 Posts

Posted - Oct 03 2017 :  08:46:59  Show Profile  Reply with Quote
It is expected behavior as this feature is not at present supported by FastModel. However, as we provide the full source code of FastModel, you have the full control on the funcionality and you may, if you have some coding skill, implement the feature yourself.

As an alternative, if you need it on a short schedule, we are fully willing to extend FadtModel based on your specifications as a consulting service. In this case, kindly contact us via any of the channels indicated in the "Contacts" page.

Best Regards,
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3 Posts

Posted - Oct 03 2017 :  18:12:27  Show Profile  Reply with Quote
Thanks Enrico. I'll take a look at the source. In the mean time converting the affected units isn't too much trouble.
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