Elmer Discussion Forum

Hi! Hi Croco Nice work! This kind of diligent work is needed to push the code into new areas. And actually before your tests this was not possible since the wave equation hadn't been tested for eigen analysis. Cool! I am glad this was interesting for you. A note on the output of eigenmodes. You will...

Hey guys. If you are interested, I did a little accuracy study of the solution. I am quite satisfied. Results are here: https://computational-acoustics.gitlab. ... ed-part-2/.

Cheers!

I see, that clarifies. Thanks. As for your question: The same applies to "Pressure Velocity". That being said, I don't really recall what it would do in harmonic case. Does it play a role whether you have it or not? This is also taken care by the library. I commented out and used a sort of...

So, the eigenvalues appear to be angular frequency squared. If I calculate the associated frequency in Hz I get these values (omitting the first small negative value clearly associated with the 0 order mode, a constant pressure field with 0 eigenvalue): 34.313370192521894 42.900349974920196 54.96344...

Hi, You can just compile the updated solver: elmerf90 -o WaveSolver.so WaveSolver.F90 (or .dll in Windows). -Peter Ha! Nice one. That works! I finally got a solution. ELMER SOLVER (v 8.4) STARTED AT: 2020/08/21 11:59:36 ParCommInit: Initialize #PEs: 1 MAIN: MAIN: ===================================...

I see, thanks for looking into this! I will maybe look into building the devel branch to test it out.

Also, this line: Procedure = "WaveEq" "WaveSolver" Needs to be this instead: Procedure = "WaveSolver" "WaveSolver" I tried the same sif as in the example, a part the few changes mentioned above: Check Keywords "Warn" Header Mesh DB "." &quo...

Hi Peter, Thank you very much for your help. I tried to change the material parameters to this (as in the example): Material 1 Name = "Ideal" Wave Speed = Real 1.0 End But I will get this error: ERROR:: ListInitElementKeywords: Keyword required but not present: Sound speed Wave Speed is no...

Hello! I am trying to solve for the acoustic eigenmodes of a 3D rectangular room by using the WaveSolver. I am using this as a guide. See below my sif file: Header CHECK KEYWORDS Warn Mesh DB "." "." Include Path "" Results Directory "" End Simulation Max Outp...

Hi, thanks for your inputs. I can confirm that my studies run on the VM, and that is how I will run them for the a while. I will be back to this thread when I look back into this.

Thanks!