Search found 25 matches

by konst
Wed Oct 02, 2019 6:36 pm
Forum: Code_Saturne usage
Topic: Default format of probes
Replies: 1
Views: 182

Default format of probes

Hello! I define a set of monitoring probes in the cs_user_postprocess.c: /* Define monitoring probes */ /* A writer (id = CS_POST_WRITER_PROBES) using the format "time_plot" is associated by default to a set of monitoring probes. This is not the case for a profile. */ { cs_coord_t a = 0.00333333; cs...
by konst
Tue Jun 11, 2019 6:12 pm
Forum: Code_Saturne usage
Topic: cs_user_boundary_conditions.c in case of rough surface and Spalart-Allmaras
Replies: 1
Views: 605

Re: cs_user_boundary_conditions.c in case of rough surface and Spalart-Allmaras

I figured it out, maybe it will help to someone. The code is correct, but the problem was coming from the absence of convergence in model. So I found that it is better to use pseudo-coupled velocity-pressure solver and do not mix smooth and rough boundaries while using Spalart-Allmaras model. Best r...
by konst
Fri Jun 07, 2019 6:32 pm
Forum: Code_Saturne usage
Topic: cs_user_boundary_conditions.c in case of rough surface and Spalart-Allmaras
Replies: 1
Views: 605

cs_user_boundary_conditions.c in case of rough surface and Spalart-Allmaras

Bonjour, I am trying to run Spalart-Allmaras model with rough surface and prescribe BC by user-function in this way: f = CS_F_(nusa);//get turbulence energy field int ivar_nu = cs_field_get_key_int(f, keyvar) - 1; //ivar for k cs_selector_get_b_face_list("inlet or outlet", &nelts, lstelt); for (cs_l...
by konst
Fri Apr 12, 2019 11:12 am
Forum: Code_Saturne usage
Topic: Wind tunnel by Launder-Sharma k-epsilon
Replies: 4
Views: 539

Re: Wind tunnel by Launder-Sharma k-epsilon

I have implemented option of Launder-Sharma model to GUI. Looks like it works. There is questions what kind of wall-functions is possible to use with that model. I implemented the same wall functions options as for k-epsilon models, but maybe it should be just two options: 1) wallfunction "all y+" ....
by konst
Wed Apr 10, 2019 6:14 pm
Forum: Code_Saturne usage
Topic: Wind tunnel by Launder-Sharma k-epsilon
Replies: 4
Views: 539

Re: Wind tunnel by Launder-Sharma k-epsilon

Thank you for your reply ! But this will not work with GUI, because setting of GUI has a priority over cs_user_parameters.c, right? If that's right could you provide an example how to use CS6.0 without GUI (all set of necessary files... cs_user_scripts.py maybe). Thanks. PS. I was planning to apply ...
by konst
Thu Apr 04, 2019 3:55 pm
Forum: Code_Saturne usage
Topic: Wind tunnel by Launder-Sharma k-epsilon
Replies: 4
Views: 539

Wind tunnel by Launder-Sharma k-epsilon

Hello,

Could you provide an example of using new Launder-Sharma k-epsilon model in version CS 6.0? It would be great if you can provide wind tunnel with rough wall.

Best regards,
Konstantin
by konst
Fri Mar 08, 2019 3:29 pm
Forum: Code_Saturne usage
Topic: Exceeded memory limit
Replies: 6
Views: 626

Re: Exceeded memory limit

Yvan, thank you for your help! You are right that was a problem of ATHOS. I were running these case on EOLE and it works really well.
Thanks again.

Bon weekend,
Konstantin
by konst
Fri Mar 01, 2019 7:10 pm
Forum: Code_Saturne usage
Topic: Exceeded memory limit
Replies: 6
Views: 626

Re: Exceeded memory limit

Hello, Yvan, thank you for spending time for my case. I have checked this case with a smaller number of processors as you recomend. And anyway I have this error. If there is no memory leaks in there, I have only one guess that this case does not converge at some moment. Thank you again and bon weeke...
by konst
Wed Feb 20, 2019 11:39 am
Forum: Code_Saturne usage
Topic: Rough wall and k-omega SST model
Replies: 0
Views: 743

Rough wall and k-omega SST model

Hello!

Is that possible to simulate properly a flow over a very rough wall by k-omega SST model? I was trying a different tests and it does not gives me a proper velocity profile.

Best regards, Konstantin
by konst
Wed Feb 06, 2019 8:16 pm
Forum: Code_Saturne usage
Topic: Exceeded memory limit
Replies: 6
Views: 626

Re: Exceeded memory limit

Thank you for your reply, Yvan. I was trying the same test but with k-epsilon model and results gives me the same error "exceeded memory limit". So looks like problem not in the turbulence model. I attached zip archive with my setup files I was running on claster ATHOS usng 3 nodes. Best regards, Ko...