Search found 58 matches
- Tue May 14, 2024 12:55 am
- Forum: code_saturne usage
- Topic: Cannot use TVD schemes
- Replies: 4
- Views: 64
Re: Cannot use TVD schemes
Thank you, Yvan. I'd like to ask: if I use ischcv=1 and isstpc=3, would I be emulating the TVD Bounded CD scheme? (Using CD whenever boundedness is ensured, and otherwise resorting to upwind 1st order). In essence, my goal, rather than being able to use ischcv=4, is to use a high-order scheme that e...
- Mon May 13, 2024 1:42 am
- Forum: code_saturne usage
- Topic: Cannot use TVD schemes
- Replies: 4
- Views: 64
Re: Cannot use TVD schemes
Hello Yvan, thank you for the response. I tried setting isstpc to 0, 1, and 2 (i.e., all possible values) for velocity, but in all cases, I get the same error message: "invalid value of ischcv". I'm interested in using it for velocity, but now I see that if I try the same for the omega var...
- Sat May 11, 2024 10:10 pm
- Forum: code_saturne usage
- Topic: Cannot use TVD schemes
- Replies: 4
- Views: 64
Cannot use TVD schemes
Hello everyone. I'm trying to use TVD (Total Variation Diminishing) schemes as advective schemes by setting them in cs_user_parameters.c. However, I always encounter this error message as soon as the run starts. ../../../code_saturne/src/alge/cs_convection_diffusion.c:4786: Fatal error. invalid valu...
- Mon Apr 08, 2024 4:28 pm
- Forum: code_saturne usage
- Topic: Possible problem in Treatment of Source Terms in Turbulence Models Implementation
- Replies: 2
- Views: 392
Re: Possible problem in Treatment of Source Terms in Turbulence Models Implementation
Thanks Martin,
Now I can clearly see then that by adding the implicit term, a term with is introduced which cancels out the explicit term.
Thanks for the explanation.
Now I can clearly see then that by adding the implicit term, a term with is introduced which cancels out the explicit term.
Thanks for the explanation.
- Sun Apr 07, 2024 12:01 am
- Forum: code_saturne usage
- Topic: Possible problem in Treatment of Source Terms in Turbulence Models Implementation
- Replies: 2
- Views: 392
Possible problem in Treatment of Source Terms in Turbulence Models Implementation
Hi all, I'm thoroughly analyzing the implementation of hybrid turbulence models, specifically regarding RANS and the k-omega SST model. I'm working with version 8.1. While examining the code in cs_turbulence_kw.c , I've come across something that doesn't quite add up regarding the explicit/implicit ...
- Mon Mar 25, 2024 4:29 pm
- Forum: code_saturne usage
- Topic: Skin friction coefficient calculation
- Replies: 5
- Views: 5199
Re: Skin friction coefficient calculation
Hi Yvan, I've been conducting tests with the 2D turbulent flat plate case, which, as mentioned, provides satisfactory results compared to experimental data using the same setup as for the vehicle (same reference magnitudes, same DDES turbulence model, etc.). I notice that the hybrid_blending_functio...
- Mon Mar 25, 2024 3:58 pm
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 5787
Re: Strange Halting at Half Total Iterations
Hi Yvan, I managed to solve the issue. Just as you suggested, I delved into investigating the changes made by the cluster administrators. We found that due to a memory restriction implemented on the master node, the amount of available memory was lower than what I typically have. This raised the pos...
- Sun Mar 17, 2024 12:45 am
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 5787
Re: Strange Halting at Half Total Iterations
Still conducting tests, but in the meantime, I wanted to highlight something quite peculiar I've noticed: another run halted at the one-quarter mark of the total iterations. Once again, there's no code specifying any particular action at that moment. Again, a .lock file is generated inside the check...
- Fri Mar 15, 2024 5:43 pm
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 5787
Re: Strange Halting at Half Total Iterations
Hi Yvan, In my case, the version is 8.0.1, not 8.1; nevertheless, I shouldn't have the race condition issue in either version, should I? This issue has occurred four times already (I'm simulating external flow around a vehicle, and since the first time it happened, no subsequent simulation has gone ...
- Thu Mar 14, 2024 5:13 pm
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 5787
Re: Strange Halting at Half Total Iterations
Hi Yvan,
I am using version 8.0.1-patch. I have attached the file code_saturne_build.cfg. Additionally, when running a simulation, I have to use this command:
I am using version 8.0.1-patch. I have attached the file code_saturne_build.cfg. Additionally, when running a simulation, I have to use this command:
Code: Select all
export LD_PRELOAD=/share/apps/easybuild/software/GCCcore/10.3.0/lib64/libgfortran.so