Search found 38 matches

by thomasatelmer
18 Apr 2021, 18:15
Forum: Installation & compilation
Topic: [SOLVED] Compiling ElmerFEM from source on a Raspberry 4B
Replies: 2
Views: 691

Re: Compiling ElmerFEM from source on a Raspberry 4B

Good afternoon, Thank you Kevin for checking this, even on a Sunday - appreciate this! In the meantime, after sleeping over this issue, I got a creeping thought in my mind that it might be linked to the armhf architecture, that I used in the Ubuntu kernel. I setup a new SD card with Ubuntu with arm6...
by thomasatelmer
18 Apr 2021, 02:35
Forum: Installation & compilation
Topic: [SOLVED] Compiling ElmerFEM from source on a Raspberry 4B
Replies: 2
Views: 691

[SOLVED] Compiling ElmerFEM from source on a Raspberry 4B

Hi, I took off on a quite crazy endeavour by trying to get ElmerFEM running on a Raspberry 4B. So far no luck... But maybe with the help of the people in this forum, this might change - as this is one of the most responsive forums that I know !! The subject: On the Raspberry, there is Ubuntu 18.04 i...
by thomasatelmer
14 Apr 2021, 23:15
Forum: ElmerGUI
Topic: Anisotropic heat expansion coefficient in ElmerGUI
Replies: 2
Views: 597

Re: Anisotropic heat expansion coefficient in ElmerGUI

Thank you Peter for answering this - I shall try to use the proposed nomenclature in the xml snippet for the respective material. As to my second question - well, I was afraid that would be the answer. But anyhow, just another reason to learn about UDFs :-). Regards and keep up the good work and sup...
by thomasatelmer
14 Apr 2021, 01:30
Forum: ElmerGUI
Topic: Anisotropic heat expansion coefficient in ElmerGUI
Replies: 2
Views: 597

Anisotropic heat expansion coefficient in ElmerGUI

Hello alltogether, this time I am hitting with a fairly simple question - so simple that I cannot believe that it has not been asked and answered before. But one and a half hour of heating google's servers did not provide me any hints. So sorry if this is a dull question ;) I am trying to model an a...
by thomasatelmer
30 Mar 2021, 00:18
Forum: External tools
Topic: [SOLVED] ElmerGrid failing to set partitioning on nodes
Replies: 4
Views: 964

Re: ElmerGrid failing to set partitioning on nodes

Hi Peter and interested readers, succeeding on the partitioning thanks to Peter's input, the calculation is underway for now about 5 hours (a fairly big one). Convergence is good, and so I'd expect everything to run smoothly from hereon, and I'll mark this thread as closed. Thanks and have a good ni...
by thomasatelmer
29 Mar 2021, 17:21
Forum: External tools
Topic: [SOLVED] ElmerGrid failing to set partitioning on nodes
Replies: 4
Views: 964

Re: ElmerGrid failing to set partitioning on nodes

Hi Peter, thank you very much for the quick answer. I tried the setting, and Elmergrid worked without error message. Partitions were written like intended. So in short words - I ordered Elmergrid to use a different partitioning routine, not only based on nodal connections, but also element connectio...
by thomasatelmer
29 Mar 2021, 14:48
Forum: External tools
Topic: [SOLVED] ElmerGrid failing to set partitioning on nodes
Replies: 4
Views: 964

[SOLVED] ElmerGrid failing to set partitioning on nodes

Hello, dear fellow Elmer users, I am currently trying to use Elmer on a multi-body mesh coming from Salome with quadratic elements. I am trying to have ElmerGrid partiion the mesh in multiple partitions, in the attached example 3 partitions. Up to the point that ElmerGrid sets the partition info on ...
by thomasatelmer
13 Oct 2020, 21:18
Forum: ElmerSolver
Topic: BDF order setting on the example "Vortex shedding"
Replies: 8
Views: 2456

Re: BDF order setting on the example "Vortex shedding"

Good evening, Kevin, thank you for your assessment and what you tell me sounds quite logical to me. So I thought about what to do... I didn't want to mesh my volume so fine as to minimize the effect, so I decided to model a 1mm thick layer of air around the cylinder and set this layer also to 373K a...
by thomasatelmer
12 Oct 2020, 21:57
Forum: ElmerSolver
Topic: BDF order setting on the example "Vortex shedding"
Replies: 8
Views: 2456

Re: BDF order setting on the example "Vortex shedding"

Hello, Elmer forumists, and thank you for your thoughts on my questions so far. I went a little further with my trials and modeled a 3D case of a steel cylinder of T=373K in surrounding resting air of 293K. I was able to get convection (ok, no turbulence, but it looks quite similar to reality, with ...
by thomasatelmer
07 Oct 2020, 17:27
Forum: ElmerSolver
Topic: BDF order setting on the example "Vortex shedding"
Replies: 8
Views: 2456

Re: BDF order setting on the example "Vortex shedding"

Thank you, Kevin & Peter, for the as-always swift replies. I understand your statements such, that BDF orders should generally not change the overall characteristics of the solution result, but can increase stability when higher orders are used. If a physically instable problem like the vortex s...