Search found 24 matches

by vencels
02 Aug 2018, 09:53
Forum: ElmerSolver
Topic: Magnetodynamic 3d convergence issue
Replies: 6
Views: 283

Re: Magnetodynamic 3d convergence issue

Upload your full case including *.sif file.
by vencels
25 May 2018, 13:18
Forum: External tools
Topic: EOF-Library - Introducing Elmer FEM and OpenFOAM coupler
Replies: 0
Views: 829

EOF-Library - Introducing Elmer FEM and OpenFOAM coupler

Hi! With this post I want to introduce EOF-Library project and bring Elmer and OpenFOAM communities a bit closer. To my knowledge there is no other proprietary simulation tool that can couple FVM and FEM more efficiently in terms of performance as this tool so lets use this time advantage in our fav...
by vencels
22 Feb 2018, 00:10
Forum: ElmerSolver
Topic: Computing convective heat loss without air
Replies: 1
Views: 330

Re: Computing convective heat loss without air

If you know heat transfer coefficient [W/(m2*K)] then your problem reduces to simple heat conduction. This is easy-peasy for Elmer.

Tests that are solving heat equation with "heat transfer coefficient" shown in picture
by vencels
10 Feb 2018, 20:54
Forum: ElmerSolver
Topic: Synchronizing target variables and fields of EOF-Library
Replies: 4
Views: 505

Re: Synchronizing target variables and fields of EOF-Library

Hi Anil,

1) Yes, Joule heating in Elmer is in W/m3.
2) Not sure whether you need to use alphaEff or nu()/Pr. Thinking about kappa (thermal conductivity) I think it is typically measured for non-moving fluids and gasses. To be on safe side, better ask someone with CFD knowledge :)
by vencels
29 Jan 2018, 23:49
Forum: Installation & compilation
Topic: Compiling the Latest Elmer on Linux Mint 17
Replies: 7
Views: 1141

Re: Compiling the Latest Elmer on Linux Mint 17

For me compiling/installing Elmer on many different Linux distros was a piece of cake, comparing with other open-source software. Elmer has very few dependencies and for most users build-in iterative solvers are enough, they simply work out-of-the-box. For those who really need third-party solvers I...
by vencels
06 Oct 2017, 12:11
Forum: Software development
Topic: VxB fof WhitneyAVHarmonic
Replies: 1
Views: 549

VxB fof WhitneyAVHarmonic

Hi! I am using WhitneyAVSolver as a reference and trying to implement VxB term into WhitneyAVHarmonicSolver and CalcFields . Next step is sending conductive fluid velocity from OpenFOAM to Elmer. I think that from Elmer side I need to feed this velovity to the variable "lorentz_velo(3,27)". Question...
by vencels
16 Aug 2017, 16:03
Forum: General
Topic: Steady state performance of WhitneyAVHarmonicSolver
Replies: 1
Views: 466

Steady state performance of WhitneyAVHarmonicSolver

Hi, I am doing coupled Elmer and OpenFOAM simulation using EOF-Library. Both meshes have ~1M elements/cells. Simulation is running on 8+8 MPI processes. For every Elmer steady state computation (it takes 170sec) there are ~8 OpenFOAM timesteps (all combined ~30sec). Basically, Elmer is taking about ...
by vencels
13 Jun 2017, 10:47
Forum: ElmerSolver
Topic: Boundary conditions for 3D WhitneyAVHarmonicSolver
Replies: 0
Views: 879

Boundary conditions for 3D WhitneyAVHarmonicSolver

Hi, I am trying to solve inductor in the air, see picture attached. Inductor is made from highly conductive material and frequencies are about 1kHz so skin effect should be taken in account. Lets say I have 1kA current flowing in the inductor. I see two options to model this: 1) Set appriximate curr...
by vencels
26 May 2017, 00:42
Forum: ElmerSolver
Topic: Save scalars and segmentation fault
Replies: 4
Views: 1082

Re: Save scalars and segmentation fault

You could try to recompile Elmer in debug mode

cmake -DCMAKE_BUILD_TYPE=Release ../elmerfemhen you

Then you will get a file name and line number where this error happens.