[mariconeagles96]

hi all!

Im doing some CHT on one model project and was thinking of using a fan curve (momentum source) and compare it with my actual fan blade model project. I already have the results and it was in good relation with the actual thermal test.

So now, I will use the fan curve using the momentum source technique and had found some good points here in this thread. However I did encounter some problems on my own. First I compared the fan curve and simulated model using the momentum source option and had good relation with the fan curve data. I also made a simple blockage to check if the fan curve reacts to whatever resistance that is in front of it and results were ok.

fansub: CEL
x=0 [kg m^-2 s^-2]
y=0 [kg m^-2 s^-2]
z=fanQ*rho*velF/volF

where fanQ = fancurve(delP)
delP = abs(fanOUT-fanIN) <-- these are the faces of the fan
velF = volumeAve(Velocity)@fansub
volF = fanArea*FanLength

As for the fan curve:
Argument: Pa
Result Unit: m^3

Now using these expressions and put it on my actual project, my components temperature were very high and flowrate was about the same.. maybe 10% lower from my previous actual blade simulation.

Can you guys help me out? thanks a lot! =)