Search found 18 matches

by kchinembiri
Mon Feb 11, 2019 10:00 pm
Forum: Code_Saturne usage
Topic: Reduction in time step leads to divergence of velocity
Replies: 1
Views: 168

Reduction in time step leads to divergence of velocity

Hi all, I have puzzling problem. If i reduce the time step for my LES simulations the velocity diverges. If increase the time step back to its original value (2e-4), no divergence occurs and I can get past the point where the solution diverges with the smaller time step. I want to reduce the time st...
by kchinembiri
Thu Jan 17, 2019 1:37 pm
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Re: Interpolate results onto a different mesh

Hello Yvan,

I think you forgot to attach the file containing the patch. Additionally, I will also keep a lookout for the next version releases. I appreciate the time you took to help me.

Thank you again & regards

Kenneth
by kchinembiri
Wed Jan 16, 2019 5:12 pm
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Re: Interpolate results onto a different mesh

Hi Yvan,

I have attached the compile.log. I had taken off all user sources and was testing on just the example subroutine (cs_user_boundary_conditions-medcoupling_remapper_2d.c). I have attached it aswell.


Thank you for your time & regards,

Kenneth
by kchinembiri
Tue Jan 15, 2019 4:27 pm
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Re: Interpolate results onto a different mesh

Hi Yvan, Yes i believe so. During configuration i used with-medcoupling=<path to med_coupling library> . When I check the config-log I have cs_have_medcoupling='yes' . I have attached the config-log. Is there another check you think I can make ? Additionally, I tried compiling the example "cs_user_b...
by kchinembiri
Mon Jan 14, 2019 10:53 pm
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Re: Interpolate results onto a different mesh

Hi, Thank you for the quick reply. To confirm, I have #include "cs_medcoupling_remapper.hxx" at the top of cs_user_initialize.c. I have used the option --disable-medcoupling-as-plugin but I still have the same problem. At compile i get fatal error: cs_medcoupling_remapper.hxx: No such file or direct...
by kchinembiri
Mon Jan 14, 2019 3:39 pm
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Re: Interpolate results onto a different mesh

Hi Yvan, I have installed Code-Saturne 5.3.1 with MEDCoupling support enabled, but i have errors relating to MEDCoupling when i try to compile cs_user_initialize.c . For example, initially I got an error when compiling stating code-saturne could not find cs_medcoupling_remapper.hxx I then specified ...
by kchinembiri
Thu Jan 10, 2019 9:24 pm
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Re: Interpolate results onto a different mesh

Thank you for the suggestion Yvan. I will try and use the MEDCoupling approach first.
by kchinembiri
Wed Jan 09, 2019 11:17 am
Forum: Code_Saturne usage
Topic: Interpolate results onto a different mesh
Replies: 18
Views: 901

Interpolate results onto a different mesh

Hi all, I am currently using Code_Saturne(5.2.0) for LES simulations in a sealed rod bundle. I have noticed a region of the mesh which could do with some additional refinement(I would be making some fairly slight adjustments, essentially shifting the cells and/or adding a few additional cells in the...
by kchinembiri
Fri Jul 27, 2018 12:36 am
Forum: Code_Saturne usage
Topic: LES in enclosed rod bundle not converging
Replies: 2
Views: 374

Re: LES in enclosed rod bundle not converging

Hi Yvan, Thank you for the prompt reply. I have looked at the cross flow vectors and the region does not appear to be a re-circulation zone. Additionally, I ran the simulation for longer and it appears to move across the domain(please see attached). My courant number also peaks within this zone(Osci...
by kchinembiri
Mon Jul 23, 2018 12:11 pm
Forum: Code_Saturne usage
Topic: LES in enclosed rod bundle not converging
Replies: 2
Views: 374

LES in enclosed rod bundle not converging

Dear all, I am trying to simulate buoyant flow in an enclosed rod bundle, but the simulation is not converging. Looking at the results it appears there are a couple of cells near the domain boundary where I have non-physical velocities. I have tried switching on EXTRAG for pressure, but the problem ...