I am doing a simple reality check so that I can trust the thermal simulations. I am running into a situation I don't fully understand.
I have two platforms, with a connection by a wire. The top one has a fixed temperature, the bottom one dissipates heat at a fixed rate. When I run the thermal simulation, it shows the temperature distribution of the two platform, with a rainbow along the wire. I am interested in the steady-state temperature of the bottom platform.
Here's the part that's confusing me: When I change the thermal conductivity of the wire (all the way from one billion to one billionth), the steady-state temperature of the bottom platform never changes. According to my physical intuition, the more conductive the wire, the faster heat will travel to the lower platform. Since the lower platform dissipates heat at a constant rate, heat traveling fast into the platform might overwhelm the heat dissipation, causing the steady-state temperature to rise.
I want to know if my physical intuition is wrong, or if there's something with the program that I need to fix. I'll attach my simulation.