I am new to SimScale and I am trying to achieve a thermal solution for my system. My goal is to cool a Power Electronics Board with 6 GaN Switches, each with a power loss of 40W with safety margins included. I have ran a natural convection simulation for the board. The system includes the switches, Inductors, a vapor chamber for a set of three switches, and a heat sink that goes on the vapor chamber, respectively for the simulation.
I worry that the results that I have been getting are incorrect because I feel that there should be a larger heat gradient between the GaN switches and the Heat Sink. My questions is that am I running a natural convection simulation? If so, what are some ways that I may improve my simulation to get more accurate results?
Here is my simulation link: https://www.simscale.com/workbench/?pid=4061368265025402731&rru=b542769e-c7d5-4da2-879f-d7f04ab678bd&ci=6b320c4a-d6b6-4ad5-bb67-c9901ab64929&mt=SIMULATION_RESULT&ct=SOLUTION_FIELD