[Getdp] help for a 2-D electrostatic problem

[Christophe Geuzaine]

Yu-Cheng Wang wrote:
> Hi,
> 
> I am new to the getDp software. I am trying to use the software to
> compute the capacitance between two metal lines inside layers of
> dielectric materials with different permittivity. My problem is that
> getDp always give "Null right hand side in linear system" warning and
> failed to give a solution. I carefully checked my script and cannot
> figure out what is wrong. I attached the the tar file which include the
> gmsh input as well as getdp input. 
> 
> I really appreciate any help from you to find out what I may have done
> incorrectly. 
> 

The regions where you apply your boundary conditions (M6_left=#401 and 
  M6_right=#402) don't exist in the mesh...


> Thanks you very much in advance.
> 
> Yucheng
> 
> 1/27/2007
> 
> 
> 
> 
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-- 
Christophe Geuzaine
Assistant Professor, Case Western Reserve University, Mathematics
http://www.case.edu/artsci/math/geuzaine