Elmer Discussion Forum

Hi Matthias, Your impression is partly right, and partly wrong. For the sake of clarity let me explain briefly the reason for my taking interest in Elmer, and posting on this forum. The attached pdf document describes a project that somewhat resembles our aim and illustrates the subject in more deta...

Vencels, are you part of the Elmer development or management team?
Did you write the compilation instructions on this page?
http://www.elmerfem.org/elmerwiki/index ... sing_Cmake

Hi Peter, Thanks for the explanation. This opens the door to modifying the code, which is very useful, and I might use it in the future. The original goal of compiling Elmer instead of installing a pre-compiled binary is twofold. First, there are many Linux distros out there, which are likely to be ...

Hi Peter, In this first step approach I am not expecting a PML to be functional in the CompressibleNS solver; we didn't get that far yet. In fact, right now I would be satisfied even with having the only possible form of excitation to be the claimed body force. If only we could get even this setup t...

Hi, There is a solver called CompressibleNS, which is very briefly described as “Model 12 Large-amplitude wave motion in air” in ElmerModelsManual.pdf. Unlike in the Helmholtz solver, I don't see any possibility to define boundary conditions, nor excitation sources, except for a body force. Am I mis...

Hi Peter, Thanks for the fix, it is one step forward. Unfortunately there are some more steps to take before the Helmholtz Solver could be actively used for general practical problems (this will be explained in another thread). Even if the developers have no time to fix some issues in the software a...

Hi, Thanks Matthias and Peter for the tips, and for finally revealing the cause of the failure. I prefer to wait until the developers fix the problem, and enable us to perform a smooth and error-free compilation of the complete package. While you are at it, please also show/explain how to include Pa...

Hi Adam, The FluxSolver has been briefly described in ElmerModelsManual.pdf Model 42: Flux Computation, and it is used universally in different physics to calculate additional variable fields that are not computed by the main solver (like the acoustic velocity). The problem with this solver has been...

Hi, I am using Paraview, as it has been already discussed in this thread, and the vtu file is written in every sif I posted. I don't mind if the Elmer Postprocessor is not included in the installation; it is just useful to know whether it was deliberately left out from the installation binary, or it...

Hi, The questions in this post are primarily to the Elmer team, but if anybody else also knows the correct answers, then please comment. The next step in post-processing acoustic simulations with ElmerSolver would be to calculate the acoustic (sound) Intensity (RMS), which can be calculated from the...