Elmer Discussion Forum

Dear developers, I figured out, that for thermal radiation simulations the keyword "Equation" must be "Heat Equation" (with the space). My previous heat simulations (without radiation) used "HeatEquation" (without space) and run without any issues. Manual: " Solver...

Dear Rich_B, thank you for considering this issue. First of all sorry for the minor bugs in my python code. I extracted the relevant part from my jupyterlab notebook without individual testing. I will fix the mentiond issues in the original code block and check this for an individual run (adding sim...

Dear devolopers, I found an even simpler case of a single cylinder where gmsh mesh of version 4 produced a wrong result while the gmsh mesh of version 2 gives correct results (using pure installation compilied 2023-07-26). The mesh of the cylinder in gmsh version 2 created by following python code (...

Dear devolopers, I found a second work around that works for a pure 2023-07-26 installation (no mixed installation as proposed before). Hence, explicitly saving the gmsh msh file as version 2 does create the correct output (with no inner boundary conditions). Therefore, the issue is most likely due ...

Dear devolopers, my current solution as short time fixture is to use the best of both versions. Hence, I use the elmergrid of 2022-08-22 and the solver from 2023-07-26 by the following installation procedure. 1. Install the 2022-08-22 version and copy the "elmergrid.exe" to another folder....

This is the summary of both elmergrid results as proposed in the previous post.

Dear developers, I have an issue with different solutions between the versions 2022-08-22 and 2023-07-26, as shown in the image. DifferentResultVersions.PNG The left image (old version) shows the expected result, while on the right side (new version) two inner boundary conditions appear in the cente...

Dear kevinarden, thank you for the solution with "Heat Flux = Real -250". First, I was thinking this works, as the energy through the object (-250 W) is the same as the leaving energy (-250 W). Therefore, I set "Heat Flux = Real -500" to see the effect on the fluxes and the summe...

Dear kevinarden,

thank you for the question. The mesh has 376 Nodes on surface 2 as shown by the image. Same surface consist of 690 triangles.
Scaling with 376 is fine here and the solution as expected.

However, do you have a clue for the "-distribute" tag?

Regards

Danny

Hi Peter, I think the "-distribute" keyword is indeed what I'm looking for. However, it does not have the wished effect run in Version: 9.0 (Rev: Release, Compiled: 2022-08-02, Windows 10). First, I post the files with the expected result. I applied -250W/376 nodes = -0.66489361702 Tempear...