code_saturne User's Forum

Hello. I'd try to compile with OpenMPI 1.8.4 because I found newer versions of OpenMPI cause unpredictable hangs of calculation on my system (local CentOS-7.5 machine). Newer does not mean better not only with music, in many cases with software also. For example, old versions of Torque and Ganglia ...

Hello. Sorry, was busy with our cluster maintenance. Thanks for advice.
Here is what I discovered.
1. Temperature definition and CS_F_(h) coredump. These errors was fixed with current " 9.0-alpha " development version from GitGub. So, generally, initial questions I posted are solved with current ...

Hello, thanks for your answer.
Actually, I don't need specific operations with turbulence field. I just need to add relaxation because it stabilizes the solution. Is it enough to set Rij relaxation factor and flux reconstruction flag not touching tensor components? I mean:

field=CS_F_(rij ...

Hello. I updated Saturne from 7.0.2 to 8.x and found multiple compile errors that I don't know how to resolve correctly.

Configuration is:
==========
Hardware setup: Local server (Dell R620, 24 cores, local MPI)
OS: CentOS 7.5 KDE + vault repo
Kernel: 3.10.0-1160.66.1.el7.x86_64
System gcc: 4.8.5 ...

Sorry if I'm wrong, but, if you have MPI problems you can try to compile against OpenMPI-1.8.4 or 3.1.6. I run Saturne-7.0.2 with OpenMPI 1.8.4 and, for now (after 4.5 months), I haven't noticed any stability problems. But I don't use OFED on this setup (workstation). OS version is CentOS-7.5 ...

Thanks for your recommendations for LES. My method is for static (steady state) simulations only and for widely-used turbulence models (k-epsilon and SST, maybe for RSM) . I noticed that most effective things are relaxation and limitation. Relaxation cannot be used in dynamics while small time step ...

Hello.
I found that partial SOLU scheme (with blencv =0.7...0.8), deactivating flux reconstruction or tweaking some other numerics is not so strong as pressure/velocity limiting and relaxation. I mentioned it in other posts but I think it's relevant here too, it's important for many users. Here are ...

Hello.
If you need user post-processing functions, I can't help because I never used it.
If you need to print results, use this:
bft_printf("Zone volume: %.2f [m3]\n",zoneVlm);
zoneVlm : variable to print.
%.2f : format substring, variable value will be printed instead of it. Digit means number ...

Add this in pointers section:

Sorry, my first example is more abstract, for all cells of current thread or for entire domain if used with cs_parall_sum (second fragment is for particular zone). I hope the following will give you summary volume of "solid" zone and volume-ave temperature in units used by the solver (Celsius or ...