moved to https://docs.hpc.taltech.ee not changed to rocky yet
ElmerFEM
This page is work in progress
ElmerFEM
Elmer is a multi-physics simulation software developed by CSC. It can perform coupled mechanical, thermal, fluid, electro-magnetic simulations and can be extended by own equations.
Elmer homepage: http://www.elmerfem.org/blog/
Elmer manuals and tutorials: https://www.nic.funet.fi/pub/sci/physics/elmer/doc/
How to cite:
CSC – IT CENTER FOR SCIENCE LTD., 2020. Elmer, Available at: https://www.csc.fi/web/elmer/.
Loading the module
To use ElmerFEM the module needs to be loaded
module load green-spack
module load elmerfem
This makes the following main commands ElmerGrid
, ElmerSolver
available (and ElmerGUI
can be used on viz to setup the case file). The use of ElmerGUI for simulations is not recommended.
Running a tutorial case (quick-start for the impatient)
Copy the tutorial directory (here the linear elastic beam) and go into it:
cp -r /share/apps/HPC2/ElmerFEM/tutorials-CL-files/ElasticEigenValues/ linear-elastic-beam-tutorial cd linear-elastic-beam-tutorial
Start an interactive session on a node
srun -t 2:00:00 --pty bash
Create the mesh
ElmerGrid d 7 2 mesh.FDNEUT
Run the solver
ElmerSolver
Postprocessing would be visualizing the
eigen_values.vtu
file inparaview
on viz.
Setting up a simulation (for new users)
The follwing steps are needed to configure a simulation case (mostly on base).
Create geometry in Gmsh, group and name physical volumes and surfaces (can be done on viz).
Create mesh in Gmsh (large meshes can be created from the CLI in a batch job:
gmsh -3 geometry.geo
Convert the mesh to elmer’s format using ElmerGrid, including scaling if needed:
ElmerGrid 14 2 geometry.msh -scale 0.001 0.001 0.001
- Create a new project in ElmerGUI (can be done on viz).
create project
load Elmer mesh (point to the created mesh directory)
add equation(s)
add material(s)
add boundary conditions
create sif
edit & save sif
Edit the
case.sif
file (mesh directory, some other parameters [e.g. calculate PrincipalStresses] can only be added in the sif file, not in the GUI)Run simulation:
srun ElmerSolver
or create batch file and submit using sbatch.
Postprocessing in ParaView (on viz).