Have not looked at the model.
But have you looked at the fan flow rates? Are they what you expect?
To check your setup, can you elaborate on the test environment and what assumptions your analysis makes. That may help you understand the source of error or expected error.
It may also be helpful to know what you are comparing your simulation against and how it may differ from the simulation.
I assume the test performs under default environment conditions which temperature set to be 20.05 celsius and pressure set to be 101325 pa.
Material of heat source and heatsink is copper, the default material is glass insulator.
The entrance surface and exit surface of the box that wraps around the setups are set to have environmental pressures
The initial mesh is in default setting of solidworks(level 3) I didnt change anything in there
I didnt consider any gravity. Walls are set to have a 5.5 W/m^2 heat transfer coefficient with outer environment(i assume the system means the outside of computational domain)
I don't know what other assumptions that you may need.
I also did run the the flow trajectories on the air entrance surface. The motion of the air seems to be correct. So even though I did not check the flow rate of the fan, I think the they perform normally by roughly looking at the speed of air entering the heatsink.
So I am in a heatsink designing process. There is no external reference like experimental results for comparing. Can you help to check is there any obvious mistakes that i made in the model that lead to this result?
With gravity and radiation disabled, you assume there are zero effects from these sources of heat transfer.
Also 5w/m^2 is pretty low, where did you get that value from?
Haven't looked at the model yet but are you using a fan or rotating regions?