Search found 7 matches

by Etie
20 Aug 2014, 18:47
Forum: ElmerSolver
Topic: Velocity Flux across boundary
Replies: 3
Views: 2703

Re: Velocity Flux across boundary

Hi
Ive read the chapter but i couldn't find the specific keywords needed to set this particular boundary condition. Maybe there's something im missing, but any hints would be most appreciated

Thanks
by Etie
14 Aug 2014, 22:23
Forum: ElmerSolver
Topic: Velocity Flux across boundary
Replies: 3
Views: 2703

Velocity Flux across boundary

Hi
I'm running a N-S solver, and im trying to impose a constant normal velocity flux boundary condition, but i can't seem to find the right keywords to do so. How would one go about doing this?
Thanks
Etie
by Etie
18 Jul 2014, 18:52
Forum: External tools
Topic: Multiple body STEP meshing with Salome
Replies: 8
Views: 12504

Re: Multiple body STEP meshing with Salome

Hi I managed to create multiple bodies using this method. However, when i reopen the mesh in salome, and look at the individual meshes for each body, it is no longer the shape of the geometry group. Instead, there are elements missing within the mesh and extra elements floating around it. I was wond...
by Etie
15 Jul 2014, 23:53
Forum: ElmerSolver
Topic: Navier Stokes Convergence Issue
Replies: 0
Views: 1840

Navier Stokes Convergence Issue

Hi I am having convergence issues with a coupled thermal and flow simulator. The mesh is of a metal geometry with a block of air above it. At first the simulation converged for the first 40 time steps, but then i realized i had set the initial and boundary pressures to 0 instead of 1e5 (100 kPa). Bu...
by Etie
15 Jul 2014, 19:51
Forum: ElmerSolver
Topic: Dynamic Relaxation Factor
Replies: 0
Views: 1648

Dynamic Relaxation Factor

Is it possible to set a dynamic relaxation factor, as in a relaxation factor that depends on the change in the norm?
Additionally, how would one call the value of a variable from a previous time?
Thanks
by Etie
23 Jun 2014, 19:33
Forum: ElmerSolver
Topic: Solver to pause elmer until a change is made
Replies: 5
Views: 3538

Re: Solver to pause elmer until a change is made

Hi

Thank you for your response. Where could i find the documentation for SystemCommand()?
by Etie
16 Jun 2014, 23:02
Forum: ElmerSolver
Topic: Solver to pause elmer until a change is made
Replies: 5
Views: 3538

Solver to pause elmer until a change is made

Is it possible to write a solver that pauses a transient simulation at a certain time until a text document (or other external file) has been updated?