Elmer Discussion Forum

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...

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...

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...

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...

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...

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 ...

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...

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 ...

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...

Hello, Elmer users and creators, I have so far used Elmer in various physical disciplines sufficiently successful (time-dependent thermomechanics, coupled FSI, magnetics ...). Now I am on to assessing the thermal air flow by convection. For this, I firstly ran the GUI example for the vortex shedding...