Search found 4080 matches

by Yvan Fournier
Fri May 06, 2016 10:38 pm
Forum: code_saturne usage
Topic: Wall stress discontinuous at restart
Replies: 3
Views: 2611

Re: Wall stress discontinuous at restart

Hello, usipsu is a better place than usipes to add ineedf = 1, so you should try this first. If this is not enough (ie. there is no improvement), it would be interesting to see if other fieds (velocity, pressure, turbulence variables) also exhibit a "jump" or not. In theory, a restart shou...
by Yvan Fournier
Fri May 06, 2016 10:33 pm
Forum: code_saturne usage
Topic: Axail fan modelling usin cs_fan.h
Replies: 19
Views: 15847

Re: Axail fan modelling usin cs_fan.h

Hello, This seems interesting. Just a note regarding the documentation (or lack thereof). The fan model was implemented and documented in an older code, and the model was recently added to Code_Saturne , but not documented yet. This documentation should be added to the code in the next few months, s...
by Yvan Fournier
Mon May 02, 2016 1:17 pm
Forum: code_saturne usage
Topic: Face Joining, suspected bug
Replies: 7
Views: 5751

Re: Face Joining, suspected bug

Hello, You have no joining, I believe because yoour selection criterion is incorrect: "join5 and join 6" means you select faces that belong both to groups "join5" and "join6" (logical "and"). To select faces that belong either to "join5" or "joi...
by Yvan Fournier
Mon May 02, 2016 1:09 pm
Forum: code_saturne usage
Topic: Axail fan modelling usin cs_fan.h
Replies: 19
Views: 15847

Re: Axail fan modelling usin cs_fan.h

Hello, The number of iterations might be limited by the fact the solver detects an divergence immediately, so stops there (you have a "nan" right away for the velocity). Did you check the same computation without fan modeling ? I assume the error is due to the fan model, but it is safe to ...
by Yvan Fournier
Mon May 02, 2016 12:49 pm
Forum: Discussion
Topic: Oil heat transfer with a low flow speed
Replies: 4
Views: 6081

Re: Oil heat transfer with a low flow speed

Hello,

OK, with these type of boundary conditions, thing should work fine (actually, for the outlet, a default Neumann BC should do. The convective part of the thermal flux is not 0).

Regards,

Yvan
by Yvan Fournier
Fri Apr 29, 2016 1:49 pm
Forum: code_saturne usage
Topic: Mapping boundary conditions
Replies: 15
Views: 38315

Re: Mapping boundary conditions

Hello Fabio,

Not forgotten, but been very busy with other parts of the code. I'll try to check/format that code within a week...

Best regards,

Yvan
by Yvan Fournier
Fri Apr 29, 2016 1:48 pm
Forum: code_saturne usage
Topic: Axail fan modelling usin cs_fan.h
Replies: 19
Views: 15847

Re: Axail fan modelling usin cs_fan.h

Hello, The code actually seems to diverge from iteration 1... Could you try running on a single rank (i.e. non-parallel) for an iteration or 2 ? I don't expect this will change anything, but it is a quick check, so I recommend doing it "just in case". Also, do you have access to or can you...
by Yvan Fournier
Thu Apr 28, 2016 10:46 am
Forum: code_saturne usage
Topic: Two-way coupling code_saturne / code_aster
Replies: 31
Views: 59323

Re: Two-way coupling code_saturne / code_aster

Hello,

I did not find anything obviously wrong, so I am not sure about th cause of th error.

Could you post the whole case (hopefully this first test case is small) so I can try the same case on one of my installs, and see if I have the same issue ?

Regards,

Yvan
by Yvan Fournier
Wed Apr 27, 2016 8:59 am
Forum: code_saturne usage
Topic: Restart on windows
Replies: 1
Views: 2259

Re: Restart on windows

Hello,

This is due to a bug which was fixed, but we need to release an updated Windows version (the latest Windows build for 4.1 is 4.1.0, while version 4.1.3 has been released).

Regards,

Yvan
by Yvan Fournier
Tue Apr 26, 2016 9:51 am
Forum: code_saturne usage
Topic: Stop to avoid exceeding time allocation.
Replies: 7
Views: 4102

Re: Stop to avoid exceeding time allocation.

Hello,

There might be resource limits set on that node.

What does "ulimit -a" (on the login node) report ?

Regards,

Yvan