[Getdp] generated system is of dim zero

[michael.asam at infineon.com]

Hi Thomas,

the problem is that there are no physical numbers defined in your .geo file. 
GetDP uses those physical numbers in the mesh to identify the regions.
Please add the following lines to the end of your smallVol_gewinde.geo:

Cylinder_vol = 100000;  // Arbitrary unique value
Inner_vol = 100001; 	// Arbitrary unique value
Physical Volume(Cylinder_vol) = {17611};
Physical Volume(Inner_vol) = {17617};

reload it in Gmsh and mesh it again.
Note: By specifying variables (Cylinder_vol, Inner_vol) you get their names
when you choose their visibility via the menu Tools -> Visibility -> List Browser
-> select Physical groups in the lower left of this window.

In your .pro file you have to use the same physical numbers (not the entity numbers):
Group {
    cylin_vol   = Region[100000];
    inner_vol   = Region[100001];
    start_vol    = Region[{cylin_vol, inner_vol}] ;
}

Then it works.

By the way: Instead of the fixed time step size loop you can also use adaptive time
stepping (adjusts automatically to smaller step sizes when the solution changes quickly and
to coarser time steps otherwise), which can be more efficient. You can find an example at:
https://geuz.org/trac/getdp/wiki/TimeLoopAdaptive

Cheers,
Michael



-----Original Message-----
From: getdp [mailto:getdp-bounces at ace20.montefiore.ulg.ac.be] On Behalf Of Thomas.Bock at ptb.de
Sent: Monday, January 26, 2015 2:42 PM
To: getdp at geuz.org
Subject: [Getdp] generated system is of dim zero

Hello,

I tried to calculate the temporal development of a simple looking problem but I get the message "generated system is of dimension zero"
I can not find the problem. Would be very nice if someone could have a
look:


 

I use version 2.4.5-svn of getdp.

Thank you very much in advance
Thomas