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Hello,<br><br>
I'm new with GetDP, and I'm trying to compute the global current flowing
through a L-shape <br>
conductor (3D) in electrical conduction formulation. I now that it is not
something new under the sky, but<br>
I have tried to do this using GetDP Manual <br>
and the very useful information found on your mailing list, and
unfortunately I failed. So I decided to<br>
bother you with a question which was already asked.<br>
I obtained the current density (j) and I tried to integrate it (as others
did) on the surfaces (named "Hot" and "Ground")
<br>
where I imposed the Dirichlet conditions. I retained your advice that Hot
an Ground have to be parts of whole region<br>
(DomainC_Ele) and I used<br><br>
<font face="Courier New, Courier">DomainC_Ele =
Region[{Conductor,Hot,Ground}]; <br><br>
</font>I obtained the solution, but I obtained the messages<br><br>
<font face="Courier New, Courier">GetDP : P r o c e s s i n g . . .<br>
GetDP : Error : Null determinant in
'Get_InverseMatrix'<br><br>
and <br><br>
GetDP : P o s t - P r o c e s s i n g . . .<br>
GetDP : Warning : Zero determinant in
'Cal_PostQuantity'<br><br>
</font>and the current was null.<br>
Then, tried also with DomainC_Ele without Hot and Ground<br><br>
<font face="Courier New, Courier">DomainC_Ele =
Region[{Conductor}];<br><br>
</font>and I obtained the solution without any error message, but
the integral for current on <br>
Hot (or Ground) was (obvious) null. What is wrong?<br>
I attach the problem files.<br><br>
Thank you in advance!<br>
Florin<br><br>
<x-sigsep><p></x-sigsep>
Florin Ciuprina, Ph.D.<br>
Associate Professor<br>
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POLITEHNICA University of Bucharest<br>
Electrical Engineering Faculty<br>
Electrical Materials Laboratory<br>
Spl.Independentei 313, 77206, Bucharest, Romania<br>
Tel: +40.21.402 92 91<br>
Fax: +40.21.410 43 55<br>
e-mail: florin@elmat.pub.ro<br>
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