Elmer Discussion Forum

Dear Elmer users The Elmer documentation has recently been moved under Creative Commons Attribution-No Derivative Works 3.0 License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nd/3.0/. In practice this means that it is now perfectly ok to redistribute the pdf docume...

Hello everyone, Elmer-project has decided to switch from the mailing list "elmerdiscussion@postit.csc.fi" to a discussion forum: http://elmerfem.org/forum The mailing list "elmerdiscussion@postit.csc.fi" will remain active for a transition period: - ongoing discussion should cont...

Hi Eelis, SaveLine can plot data on boundaries as well as save data in synthethic polylines. However, SaveLine does not support computation of arc lengths. You could use the coordinate values to compute them afterwards. There is an undocumented hack to get the nodal weight resulting from standard in...

The difference between "mean" and "int mean" is that the former is a number average (\sum x_i / n) and the latter an integral mean (\int x dA / \int dA). Physically only the "int mean" makes sense. The number average is the same only when each element is of equal size. ...

There are actually a number of techniques to solve the N-S equations in Elmer. The one referred in the paper is the default. Additionally, there is an own implementation of residual free bubbless that is used often when the standard stabilization fails. The artificial compressibility (AC) in the N-S...

Hi Selim, Unfortunately, ElmerFront is no longer supported. However, it and the new ElmerGUI have the common feature that the .sif file is not the format in which the state of the graphical user interface is stored. Hence, any manual changes made in the .sif file will not be taken into account when ...

Another possibility is to use really large time-steps at the beginning which effectively make the equation steady-state. This makes it possible to have the initalization within the same simulation. However, often there is no steady-state solution and solving with long time-steps will not result into...

It would be interesting to know in what application fields Elmer mostly used in. You may also comment what fields or equations should be further developed to better meet your needs. Also if you solve coupled problems what are the typical combinations?