[petsc-users] TS tutorial 11 and periodic DM

[Thibault Bridel-Bertomeu]

Dear all,

I am trying to figure out a working set of options for TS tuto ex11
involving the 3D Euler Linear Wave test. I cannot seem to go anywhere as it
keeps crashing saying the physics did not compute the wave speed ... anyone
could advise ?

It is not however completely about ex11. I am trying to figure out how to
set up periodic boundary conditions for a box mesh. I tried to get some
infos here and there following examples : I got that you have to set
DM_BOUNDARY_PERIODIC for the dimensions that you want in the array that you
pass to DM Create Box Mesh, but i am not clear whether I have to do
anything else after. Do I have to call DM Set Periodicity ? I also saw
sometimes calls to DMLocalizeCoordinates ? ... ?
And are there any constraints regarding the number of cells in the periodic
dimensions ? I would like to just have 1 cell in Y dimension for instance
to have a pseudo 1D computation, is that ok ?

Thank you for your help,

Thibault
-- 
Thibault Bridel-Bertomeu
—
Eng, MSc, PhD
Research Engineer
CEA/CESTA
33114 LE BARP
Tel.: (+33)557046924
Mob.: (+33)611025322
Mail: thibault.bridelbertomeu at gmail.com
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