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T O P I C    R E V I E W
kullboys Posted - Feb 01 2018 : 05:20:31
Hello everyone
1 if use the following lst file
* inner
C spherer2.qui 1.0 0.0 0.0 0.0
* outer
C spherer3.qui 1.0 0.0 0.0 0.0

the error can prompt
Warning - capacitance matrix is non strictly diagonally dominant due to row 1

2 I need help about error message:
Running fastcap 2.0 (18Sep92)
Input: D:\Docking\msh2qui2\Debug\hollowhalfsphere.qui
FATAL PROGRAM ERROR: renormalized z=-1.#IND
Thanks
5   L A T E S T    R E P L I E S    (Newest First)
Enrico Posted - Apr 26 2018 : 19:18:31
Hi Kullboys

not sure what you intended to post. Is this a link to a video showing your issue? Can you elaborate?

Enrico

kullboys Posted - Apr 26 2018 : 11:36:13
Chào m#7885;i ng#432;#7901;i
[url=ht*ps://w*w.youtube.com/]bài hát[/url]
Enrico Posted - Mar 31 2018 : 20:41:31
Exactly what it means in English: panels cannot partially or totally overlap, i.e. occupy the same (planar) region of the space.
This is different from what happens in some FEM software, where conductors are actually shorted together if they touch or intersect. FastCap2 and FasterCap uses a Boundary Element Method (BEM) where the field is solved only on the surfaces (i.e. the volume boundaries in 3D). Mutual inductance requires a double integral between panels; if panels overlap, the integral becomes singular (the distance of some of the points on the panels is zero). This anyway reflects a non-physical condition: two boundaries cannot occupy the same space at the same time.

Best Regards,
Enrico
Dixion Posted - Mar 30 2018 : 18:14:45
Hi Enrico, what does 'overlapping' mean exactly in this case? I'm just curious.
Enrico Posted - Feb 01 2018 : 08:36:52
Where are the sphere2.qui and sphere3.qui in space? Looks like they are overlapping.

Best Regards,
Enrico

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