Elmer Discussion Forum

Although it is not Discontinuous Galerkin solution, your solution helped me to find a bug in my viscosity value. I was using kinematic instead of dynamic. Thanks!

Hi,

I am trying DG for simple convective heat transfer problem - curved pipe, 2D


Result (temperature dstribution):


Expected result:


Any ideas why this could happen?

Upload your full case including *.sif file.

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...

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

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

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...

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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)"...

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 ...