Search found 19 matches
- Mon May 15, 2023 2:26 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
uwestoehr, thank you a lot of! I will try it.
- Mon Jan 30, 2023 9:41 am
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
Thank you! New version of Elmer solved this issue.
- Sun Jan 29, 2023 3:06 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
Hello! Sorry for very long answer. Now I want to continue investigation of Elmer. But last version of FreeCAD (commit e188802ca6997d2564e7570ab648462e6a059f87) goes wrong trivially zero result. I tried my example that before worked fine. Also I created simple Flow example and it also has this proble...
- Sun Sep 18, 2022 9:45 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
And I updated my tube example:
https://github.com/mist90/FreeCAD-FEM-e ... y-3d.FCStd
Now it uses FC pressure condition. I increse inlet velocity so difference of pressure also increses and became appr. 0.8 atm.
https://github.com/mist90/FreeCAD-FEM-e ... y-3d.FCStd
Now it uses FC pressure condition. I increse inlet velocity so difference of pressure also increses and became appr. 0.8 atm.
- Sun Sep 18, 2022 6:42 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
Thank you for work! But I found mistake in your example: priority of heat equation above than flow equation so first heat equation calculated and then flow equation. But heat equation depends on velocity-field that calculated in flow equation. So temperature in your example is calculated for case wi...
- Thu Aug 04, 2022 7:52 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
Thank you for this information! So is really faster. I hope this will help me to create another model of natural convection.
- Tue Jul 26, 2022 9:23 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
Concerning the pressure, I meant a condition for the bulk pressure. I think one need to specify that the initial pressure of the water is in your example 1.0 bar and due to the heat it will be locally maybe 1.1 bar. However, I haven't had time yet to investigate how this is done that Elmer uses thi...
- Tue Jul 19, 2022 3:31 pm
- Forum: FEM
- Topic: [announcement] multi-threading for Elmer
- Replies: 5
- Views: 1876
Re: [announcement] multi-threading for Elmer
Thanks! I have tried to run multi-thread - all works. If I set one core in pereferences then Elmer runs one thread for assembling matrices stage and four threads for calculation stage (I have four thread CPU). If I set four cores then Elmer runs four threads on all stages. But there is error in pere...
- Tue Jul 12, 2022 6:05 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041
Re: PR 7100: FEM WB Elmer viscosity bug fix
You example file shows that Elmer is not using all CPU cores. I will have a look at this as well. I did and it was much more work than expected. Here is a PR that adds multi-thread support for Elmer: https://github.com/FreeCAD/FreeCAD/pull/7159 Thank you! I can also try to add Pressure Boundary Con...
- Tue Jul 12, 2022 6:01 pm
- Forum: FEM
- Topic: PR 7100: FEM WB Elmer viscosity bug fix
- Replies: 27
- Views: 7041