I am trying to set up a conjugate heat transfer simulation of an electronic enclosure and I am not able to set fixed temperature boundary conditions for the ICs. I get the error that “Multiple boundary conditions or interface assignments for the following entities: face35@CAM_IC”. The simulation seems to run when I give an absolute power source. What am i doing wrong?
The issue arises when I try to set fixed temperature BC on one of the contact surfaces. I would like to keep the IC temperature a constant and study the surrounding variations.
Essentially, in a conjugate heat transfer simulation, it’s not possible to define a boundary condition to an interface (it ends up being overspecified). The interfaces are already defined under the contacts tab:
If you want to run a conjugate heat transfer, as you pointed out, you’d have to set up a power source;
If you absolutely want to fix the temperature on that face, you can try running a “Heat transfer” analysis (which allows you to see the temperature on the solid domain) or a “Convective heat transfer”, which allows you to evaluate the temperature in the flow region.