Search found 148 matches

by daniele
Wed Oct 25, 2023 3:33 pm
Forum: code_saturne usage
Topic: Output forces on surface
Replies: 30
Views: 1336146

Re: Output forces on surface

Hello, In v7 or earlier versions, the simplest way is to create your surface in the mesh, then you can post-process the force using for example the "cs_user_extra_operations.f90" routine. If you want the total x-force on the surface, for example, you simply have to write something as: ! ge...
by daniele
Wed Oct 25, 2023 10:21 am
Forum: code_saturne usage
Topic: Free memory constantly decreasing
Replies: 9
Views: 35007

Re: Free memory constantly decreasing

Hello Yvan, I have realized some further testing on my memory leak issue. I recall that I originally posted a problem of continuously decreasing free RAM memory, that eventually leads the simulation crash because of zero available RAM. I use v7. I added a "export CS_MEM_LOG="mem.log" ...
by daniele
Wed Oct 25, 2023 9:52 am
Forum: code_saturne usage
Topic: prescribing k and omega user profiles at inlet
Replies: 2
Views: 13412

Re: prescribing k and omega user profiles at inlet

Hello Yvan,

After double checking, the routine actually works correctly, sorry for the useless loss of time.

Thank you for your help.
Best regards,
Daniele
by daniele
Tue Oct 17, 2023 1:13 pm
Forum: code_saturne usage
Topic: prescribing k and omega user profiles at inlet
Replies: 2
Views: 13412

prescribing k and omega user profiles at inlet

Hello, I simple question, can I use: call getfbr('INLET', nlelt, lstelt) do ilelt = 1, nlelt ifac = lstelt(ilelt) rcodcl(ifac,iu,1) = 0.5d0 rcodcl(ifac,iv,1) = 0.d0 rcodcl(ifac,iw,1) = 0.d0 rcodcl(ifac,ik,1) = 0.5d0 rcodcl(ifac,iomg,1) = 10000.d0 enddo (values prescribed just as an example) inside c...
by daniele
Mon Oct 02, 2023 10:43 am
Forum: code_saturne usage
Topic: Second order scheme with RANS
Replies: 1
Views: 10351

Re: Second order scheme with RANS

Hello, I found this topic which remained unanswered and would like to ask the same question. Since second order time scheme is available in CS for LES, is there a way to tell the code to use this time scheme in RANS mode, only for the momentum equations, keeping first order for k and epsilon/omega? ...
by daniele
Tue Sep 26, 2023 1:39 pm
Forum: code_saturne usage
Topic: user routine parallelization issues - v7
Replies: 3
Views: 14309

Re: user routine parallelization issues - v7

Hello Yvan,

Thank you very much for seeing so quickly the issue... the problems does seem to come from the allocation of y_v_parall, increasing its size solves the problem.
Thank you also for the suggestion and for the updates about v8.

Kind regards,
Daniele
by daniele
Fri Sep 22, 2023 9:54 am
Forum: code_saturne usage
Topic: user routine parallelization issues - v7
Replies: 3
Views: 14309

Re: user routine parallelization issues - v7

Hello,

I add that the issue seems to come from "cs_parall_allgather_r()", since commenting this line prevents the problem, and printing "k_par" after the "call parcpt(k_par)" shows the correct result.

Thank you.
Kind regards,
Daniele
by daniele
Fri Sep 22, 2023 9:20 am
Forum: code_saturne usage
Topic: user routine parallelization issues - v7
Replies: 3
Views: 14309

user routine parallelization issues - v7

Hello, I am facing issues in making a user routine working correctly, when parallelized. The specific "code" is written inside the routine "cs_boundary_conditions_ale.f90" (subroutine usalcl), in v7. The routine loops on the faces of one boundary surface, and stores the position ...
by daniele
Wed Dec 14, 2022 1:44 pm
Forum: code_saturne usage
Topic: jobs stuck when writing checkpoint - CS v7
Replies: 4
Views: 2835

Re: jobs stuck when writing checkpoint - CS v7

Hello Yvan, I run on supermicro nodes, Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz. For the Infinite Band, the ofed version used is MLNX_OFED_LINUX-5.2-1.0.4.0. The operative system is Centos7.9. It is exactly as you say: the problem appears only for long runs where the first checkpoint is saved after...
by daniele
Mon Dec 12, 2022 4:57 pm
Forum: code_saturne usage
Topic: jobs stuck when writing checkpoint - CS v7
Replies: 4
Views: 2835

jobs stuck when writing checkpoint - CS v7

Hello, I am using version 7.2.0 and observing a problem never faced before. The simulation gets stuck once CS has to write either a checkpoint or a postprocessing periodic output. There is no error appearing, the job continues running, but practically it is stuck in the writing process forever... I ...