Search found 37 matches

by Ionut G
Tue Jul 07, 2020 3:34 pm
Forum: Code_Saturne usage
Topic: Post-process uet and uk
Replies: 3
Views: 296

Re: Post-process uet and uk

Hello Yvan, Thank you very much for your support! I tried to initialize uet, but I keep having the same error SIGSEGV signal, as in the first post. Could you give me some more guidance or some examples on how to save variables from cs_wall_functions.h subroutine? I attached the files that I am using...
by Ionut G
Mon Jul 06, 2020 3:41 pm
Forum: Code_Saturne usage
Topic: Post-process uet and uk
Replies: 3
Views: 296

Post-process uet and uk

Hello everyone, I am running k-omega SST, with no wall function, simulations on a straight channel. I need to save to the post-processing results the friction velocities uet(ustar) and uk. From the forum discussions I understand that I need to use the "cs_user_postprocess_var.f90" file in order to s...
by Ionut G
Fri May 15, 2020 9:42 am
Forum: Code_Saturne usage
Topic: CGNS error:Invalid index ranges.
Replies: 5
Views: 1377

Re: CGNS error:Invalid index ranges.

Hello Yvan, I could not find the tools for testing the CGNS file format mesh for the windows platform, I am using windows 10. I managed to solve the problem by reinstalling all the software, Code_Saturne and Icem CFD. Now the simulations are working again. Thank you very much for your support. Best ...
by Ionut G
Mon May 11, 2020 8:46 am
Forum: Code_Saturne usage
Topic: CGNS error:Invalid index ranges.
Replies: 5
Views: 1377

Re: CGNS error:Invalid index ranges.

Thank you Yvan for the quick reply! I am using ICEM CFD 16.2. I did not updated the version of any software that I am using. I am using the same software versions as in the past, Code_Saturne 5.0.7 and ICEM CFD 16.2, and everything was fine on the same geometry. When I am using a mesh that I made wi...
by Ionut G
Sun May 10, 2020 9:30 pm
Forum: Code_Saturne usage
Topic: CGNS error:Invalid index ranges.
Replies: 5
Views: 1377

CGNS error:Invalid index ranges.

Hi all, I want to run an k-epsilon turbulence model simulation with Code_Saturne 5.0.7, windows version. The mesh that I use for simulation is made using ICEM CFD. The mesh file si saved as CGNS, version 3.1 ADF. In the past I use the same CGNS file type having no error. Now when I use the mesh, the...
by Ionut G
Wed Apr 22, 2020 6:25 am
Forum: Code_Saturne usage
Topic: Turbulence modelling k-omega SST
Replies: 1
Views: 632

Turbulence modelling k-omega SST

Hi, Can someone guide me where to find the theory for turbulence modelling for the k-omega SST turbulence model? I could not find it in the theory manual from Code_Saturne. I am interested on how is computed the production of turbulence and what conditions are applied to it. Thanks in advance, Ionut
by Ionut G
Wed Mar 11, 2020 6:41 pm
Forum: Code_Saturne usage
Topic: Problem about 'Residual', 'Drift', 'CFL number'.
Replies: 15
Views: 5182

Re: Problem about 'Residual', 'Drift', 'CFL number'.

Thank you very much Yvan!

Best regards,

Ionut
by Ionut G
Tue Mar 10, 2020 10:31 pm
Forum: Code_Saturne usage
Topic: Problem about 'Residual', 'Drift', 'CFL number'.
Replies: 15
Views: 5182

Re: Problem about 'Residual', 'Drift', 'CFL number'.

Hi all! After some searching on this forum and the functions from code_saturne, I found that norm.residual is the residual I should check in order to see if the simulation is converging or not. From the file ecrlis.f90 , the drift or derive residual is defined as DRIFT=((x_n-x_(n-1) )^2*cell volume...
by Ionut G
Wed Feb 12, 2020 11:36 am
Forum: Code_Saturne usage
Topic: Problem about 'Residual', 'Drift', 'CFL number'.
Replies: 15
Views: 5182

Re: Problem about 'Residual', 'Drift', 'CFL number'.

Hi all! After some searching on this forum and the functions from code_saturne, I found that norm.residual is the residual I should check in order to see if the simulation is converging or not. From the file ecrlis.f90 , the drift or derive residual is defined as DRIFT=((x_n-x_(n-1) )^2*cell volume)...
by Ionut G
Thu Oct 03, 2019 3:58 pm
Forum: Code_Saturne usage
Topic: Velocity at the wall
Replies: 3
Views: 546

Re: Velocity at the wall

Hi Yvan, thank you for helping me. I made another simulation in Code_Saturne using the k-omega SST turbulence model, ensuring that the no wall function it was selected, my mesh y+ is smaller than 1. The mesh generation I made in ICEM CFD. If I process the results in ParaView the velocity at the wall...