Search found 12 matches
- Wed Dec 13, 2023 8:05 pm
- Forum: code_saturne usage
- Topic: Time step dependent mesh artefacts
- Replies: 1
- Views: 24850
Time step dependent mesh artefacts
Hi, I have been running pipe flow simulations to better understand the causes of mesh artefacts that can occur in LES simulations. Similar to mesh artefacts previously posted on this forum, this is a time-step issue, with the implication being that this is related to the Rhie-Chow interpolation, as ...
- Sun Apr 11, 2021 9:12 pm
- Forum: code_saturne usage
- Topic: Changing boundary faces to interior faces
- Replies: 1
- Views: 1332
Changing boundary faces to interior faces
Hi, I am using ICEM CFD for mesh generation exporting it to Code_Saturne 6.0.5 via CGNS. I have constructed a quarter model of the domain and used ICEM to mirror the mesh in two directions to create the full domain. Necessarily the surfaces on the interface between the mirrored components contained ...
- Sat Mar 23, 2019 5:50 pm
- Forum: code_saturne usage
- Topic: Using gradient_s subroutine on user defined fields
- Replies: 2
- Views: 2031
Re: Using gradient_s subroutine on user defined fields
Just a further update, I corrected part of the subroutine and it seems to work for the first iteration, but the same error returns on iteration 2. I think this is because on the first iteration the variable (Turbulent Kinetic Energy) is 0, but as soon as the variable becomes non zero on iteration 2,...
- Sat Mar 23, 2019 3:49 pm
- Forum: code_saturne usage
- Topic: Using gradient_s subroutine on user defined fields
- Replies: 2
- Views: 2031
Using gradient_s subroutine on user defined fields
I'm try to use the gradient_s subroutine to find the gradient of a user defined scalar, however I get an error 'Forbidden memory access intercepted' but I'm not sure which part of it is causing it. There are quite a few terms so I may have misinterpreted some of them. If there are other methodologie...
- Thu Mar 07, 2019 3:36 pm
- Forum: code_saturne usage
- Topic: Boundary condition overlay
- Replies: 5
- Views: 3229
Re: Boundary condition overlay
Thanks for the reply, I found out how to select faces rather than nodes in ICEM CFD when the mesh is output. That fixed my problem without the need for cs_user_zones.c.
- Wed Mar 06, 2019 11:18 am
- Forum: code_saturne usage
- Topic: Boundary condition overlay
- Replies: 5
- Views: 3229
Re: Boundary condition overlay
Due to a repeat of this issue that I don't seem to be able to circumvent by regrouping the BCs, I've tried to use the cs_user_zones.c routine (from line 82 in attachment) basing it on one of the examples however it didn't seem to work and I still have the same problem. I just have a few questions ab...
- Sun Mar 03, 2019 4:07 pm
- Forum: code_saturne usage
- Topic: Boundary condition overlay
- Replies: 5
- Views: 3229
Re: Boundary condition overlay
Thanks for the reply, I've managed to solve this particular issue just by redefining some boundary conditions to prevent overlapping.
Best regards
Matthew
Best regards
Matthew
- Fri Mar 01, 2019 12:48 pm
- Forum: code_saturne usage
- Topic: Boundary condition overlay
- Replies: 5
- Views: 3229
Boundary condition overlay
I am producing a mesh on iCEM CFD, exporting via cgns. This usually works fine however on this occasion I am getting an issue which states that some faces belong to multiple boundary conditions, although on ICEM CFD I cannot see a problem. The error states that you can allow boundary faces to overla...
- Sun Feb 24, 2019 2:31 pm
- Forum: code_saturne usage
- Topic: Calling user defined tensors in fortran in versions 5.0 and 5.2
- Replies: 4
- Views: 2742
Re: Calling user defined tensors in fortran in versions 5.0 and 5.2
Ok thanks again for all the help
- Sat Feb 23, 2019 12:52 pm
- Forum: code_saturne usage
- Topic: Calling user defined tensors in fortran in versions 5.0 and 5.2
- Replies: 4
- Views: 2742
Re: Calling user defined tensors in fortran in versions 5.0 and 5.2
Thanks a lot, clarification on the non-symmetric case would be ideal, currently I'm just using the same order as they appear in the listing file.