[Getdp] Surface charge/ normal electric field strength
Tammo Heeren
Tammo.Heeren at ieee.org
Thu Oct 26 17:08:10 CEST 2006
I have been trying to recreate the given problem and I found a somewhat
strange behavior.
As the postprocessing and postoperation I have:
PostProcessing {
{ Name all; NameOfFormulation for_v;
Quantity {
{ Name v ;
Value {
Local { [ {v} ] ; In Vol ; Jacobian Vol; }
}
}
{ Name e ;
Value {
Local { [ {d v} ] ; In Vol ; Jacobian Vol; }
}
}
{ Name ne ;
Value {
Local { [ Norm[{d v}] ] ; In Vol; Jacobian Vol; }
}
}
{ Name Q ; Value { Term { [ {Q} ] ; In Grouped ; } } }
{ Name V ; Value { Term { [ {V} ] ; In Grouped ; } } }
{ Name C ; Value { Term { [ {Q}/{V} ] ; In Grouped ; } } }
}
}
}
PostOperation {
{ Name all ; NameOfPostProcessing all;
Operation {
Print[ v, OnElementsOf Vol, File "v.pos" ] ;
Print[ e, OnElementsOf Vol, File "e.pos" ] ;
Print[ne, OnElementsOf Vol, File "ne.pos" ] ;
Print[ Q, OnRegion Grouped, Format Table] ;
Print[ V, OnRegion Grouped, Format Table] ;
Print[ C, OnRegion Grouped, Format Table] ;
}
}
}
Which is essentially what is given in the wiki. However, my getdp output is:
GetDP : Loading : Processing data 'Y:\captest1.res'
GetDP : Info : Selected PostProcessing 'all'
GetDP : Info : Selected Mesh 'Y:\captest1.msh'
GetDP : Operation : PostOperation 1/6
GetDP : > 'Y:\v.pos'
GetDP : Info : Generate ExtendedGroup '_BF_Entity_9'
(GroupsOfNodesOf)
Info : Parsing file 'Y:\v.pos'
Info : Parsed file 'Y:\v.pos'
GetDP : Operation : PostOperation 2/6
GetDP : > 'Y:\e.pos'
Info : Parsing file 'Y:\e.pos'
Info : Parsed file 'Y:\e.pos'
GetDP : Operation : PostOperation 3/6
GetDP : > 'Y:\ne.pos'
Info : Parsing file 'Y:\ne.pos'
Info : Parsed file 'Y:\ne.pos'
GetDP : Operation : PostOperation 4/6
GetDP : Operation : PostOperation 5/6
GetDP : Operation : PostOperation 6/6
GetDP : Resources : cpu 0.296875 s
GetDP : E n d P o s t - P r o c e s s i n g
GetDP : E n d
No results are shown for PostOperation 4-6, and also no error message.
Everything else seems to work just fine. Anybody have any idea?
Tammo
On 17 Oct 2006 at 16:55, Kubicek Bernhard wrote:
> Hello Tammo,
> I tried to put together a nice example for capacity calculations in the Wiki just about 10 minutes ago.
> Hopefully this can help you with your goals.
>
> If there are no glitches, maybe somebody else would like to add them to the frontpage. At the moment the example is hiding here:
>
> http://www.geuz.org/getdp/wiki/Capacitor2D
>
> Nice greetings,
> Bernhard Kubicek
>
> freelancer for Arenal Research, Vienna, Austria
>
> -----Ursprüngliche Nachricht-----
> Von: getdp-bounces at geuz.org [mailto:getdp-bounces at geuz.org] Im Auftrag von Tammo Heeren
> Gesendet: Montag, 9. Oktober 2006 22:34
> An: getdp at geuz.org
> Betreff: [Getdp] Surface charge/ normal electric field strength
>
>
> How do I extract the surface charge density or the electric field normal to the
> surface from the solution I optained with getdp and gmsh. The surfaces are
> defined in gmsh a physical lines. My eventual goal is to compute the
> capacitance of this (and other geometries). Any suggestions?
>
> Tammo