Elmer Discussion Forum

I have occasionally had that issue, but ElmerGrid has worked. Open a terminal window and change to the directory where the unv file is.

type ElmerGrid, hit enter to get help info.

Convert unv to Elmer mesh is

ElmerGrid 8 2 mymesh.unv

Go to GMSH help. current options and workspace, search for mesh.format, change it to a value of 2, goto file save mesh, GMSH will then save it as a *.unv file that ElmerGUI ro ElmerGrid can read.

Since I updated to the most recent GMSH it doesn't work for me either. Linux Mint installation. I assumed it was because GMSH started using a new mesh format. I work around it by going to GMSH parameters and change mesh.format=2 which saves the mesh as a universal file. Attached is a msh file that d...

Peter,

Good information to know, thanks. However, for material plasticity the element stiffness matrix needs to be updated every step is this something Elmer already does?

Kevin

attached is an example of a multi-material 3D radiating model in steady state and transient. The temps are in kelvin. Steady_state_column.zip transient.zip The study files are the salome models, from salome export unv and use file open in ElmerGUI. SInce I added the project files you can go to Elmer...

You may also consider setting initial conditions, heat equation, temperature, for each body otherwise each body starts at 0.

Transient should have number of time step intervals and time step sizes set. For example if you want to run the simulation for 30 seconds at a time step of .5 seconds each. Then Time Step Size = 0.5, and Time Step Intervals = 60.

60 steps at 0.5 seconds each = 30 seconds

You are doing steady state. If the boundaries do not radiate or do not radiate fast enough then eventually everything would get to constant temperature. Might try doing it in a transient to see how the heat conducts in the solids.

I believe convection works with the fluid flow solver

I have read if you use the diffuse gray you have to check the open radiation boundary. You could try the idealized model as well.