Search found 72 matches

by JamesMcNaughton
Mon Jul 16, 2012 5:37 pm
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

This seems strange as you should not have changed the runcase file.

But I think the line should read:

Code: Select all

THERMOCHEMISTRY_DATA = None
Maybe the white space is important?

And the restart should be like, for example: DATA.1/RESTART/suiava. So try renaming your RESTART.07161632 to RESTART
by JamesMcNaughton
Mon Jul 16, 2012 2:45 pm
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

Do it once for DATA.1 and once for DATA.2 then
by JamesMcNaughton
Mon Jul 16, 2012 2:04 pm
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

by JamesMcNaughton
Fri Jul 13, 2012 9:51 am
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

I mean here http://code-saturne.org/forum/viewtopic ... t=80#p5991 - it is the same error yes?

Did you try the advice I gave in the following posts?
by JamesMcNaughton
Fri Jul 13, 2012 8:29 am
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

It's the same error as your previous posts! The calculation is diverging. Did you try the things I said previously?
by JamesMcNaughton
Thu Jul 12, 2012 1:10 pm
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

imrgra is an integer so remove the .d0. If you type "code_saturne compile" whilst in the SRC folder it will tell you any issues which might save you time waiting for answers on here. The subroutines you use are up to you. But I believe usclim and usini1 are required yes. You might also wan...
by JamesMcNaughton
Thu Jul 12, 2012 10:05 am
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

Try changing gradient reconstruction to least squares by partial extended neighbourhood. Write in usini1 (in the usipsu subroutine, i.e. near where you set the time-step): imrgra = 3. You currently have it to solve by iterative reconstruction of non-orthogonalities. If you want to stick with this bu...
by JamesMcNaughton
Wed Jul 11, 2012 12:24 pm
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

If you think the coupling is a problem then I think you could (as I previously suggested) make a simpler example in 2D. This way it will be easier to find where the problems are. Afraid I cannot provide help with coupling as I do not use it any more. Having no outlet is fine, just give the surface a...
by JamesMcNaughton
Wed Jul 11, 2012 12:01 pm
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

The Courant number is not set how you suggest, that is merely defining an output. If you're keeping parameters the same but shrinking the cell size you will also need to reduce your time-step to keep the same CFL. Given that your simulation ran previously and you have only changed the mesh then you ...
by JamesMcNaughton
Wed Jul 11, 2012 8:01 am
Forum: code_saturne usage
Topic: turbine modelling
Replies: 123
Views: 54307

Re: turbine modelling

The solver is diverging for turbulent dissipation. It's hard to give advice when that is all the info about the error you give. Given that you've just refined the mesh it could be that your new mesh is not of good enough quality (have you checked for this?). Or the cells are much smaller and you've ...