I've been thinking I have a problem with multi-material thermal simulations. But recently I've been getting weird results with just two bodies of the same material.
Here I have two 10mm cubes of FR4. Applied to the right side is a 1mW heat source. The left side dissipates heat at 10W/k/m^2 into an ambient room of 300K. I was expecting an even heat gradient from the right to the left, but instead I get heating in the lower center and cooling in the upper right?! In contrast, Calculix says both bodies are at 301K (which makes sense, since the left face will dissipate 1mW for every degree above 300K)
What am I doing wrong??
I'm using FreeCAD 0.21 due to a few bugs in the Elmer plugin.
Code: Select all
OS: Arch Linux (Budgie:GNOME/Budgie Desktop)
Word size of FreeCAD: 64-bit
Version: 0.21.29529 (Git)
Build type: Unknown
Branch: makepkg
Hash: 1bb9699c9a174acfdf3e854a953913b159f3e8ef
Python 3.10.5, Qt 5.15.5, Coin 4.0.1, Vtk 9.1.0, OCC 7.5.3
Locale: English/United States (en_US)
Installed mods:
* Manipulator 1.4.9
* kicadStepUpMod 10.13.3