[Getdp] [Fwd: a coupled problem]

Christophe Geuzaine Christophe.Geuzaine at ulg.ac.be
Tue Aug 21 08:08:09 CEST 2001


jmwei wrote:
> 
> Dear Christophe Geuzaine,
>          I am a student at the University Duisburg. I have found getdp at the internet recently.  I think it is a very wonderful and useful
> software. During my current work, I have encountered a electrical field -- space charge coupled problem. Basically, this
> problem can be described using the following two equations:
> 
>                              div (epsilon*e)  + rho = 0                                  and
>                              div (rho * ( -k*e + U) )   = 0
> 
>  here epsilon , k (ion mobility) and U ( velocity field ) are all constant; while e is the electrical field and rho the space charge density.
>  I wonder if Getdp can be used to solve such a coupled problem. If it can, how can I define the formulation? In the 2nd equation
> , there is a term including the product of two unknowns, i.e.  rho*e. But getdp only allows one dof in a Galerkin definition.
> 
> 
>          Express my great thanks in advance!
>          Best regards !
> 
>            Wei
>             wei at uni-duisburg.de

-- 
Christophe Geuzaine

Tel: 32 (0) 4 366 37 10    http://geuz.org
Fax: 32 (0) 4 366 29 10    mailto:Christophe.Geuzaine at ulg.ac.be



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