Learning Forum

[Noelly]

Hello,

I ran a simulation in Icepak and I am post-processing the results in CFD post. I have air flowing through two compartments (left and right shown on the first picture) and I am trying to output the mass flow rate in each section.

I created a plane and clipped it so that I have the left and right sides separated but when I try to output the mass flow rate using the function calculator, I get an error.

For now I am using the average velocity in each side for comparison purposes but I was wondering is there was a way to get the mass flow rate.

Thanks

[CFD_Friend]

Hi 

If Mass flow is not working, please try this expression, which is equivalent to the mass flow rate

MassFlow = areaInt((Velocity u * Normal X + Velocity v * Normal Y + Velocity w * Normal Z)*Density)@IsoClipName

Evaluate this expression to get the mass flow rate.

[Noelly]

Thanks you! I have another question, how can I calculate the pressure drop between the inlet and outlet of the fan? For now I am drawing a line in Icepak and then plotting the pressure:

 

[CFD_Friend]

Hi 

If you can run the result through CFD-Post, you can calculate the pressure difference at inlet planes and outlet plane using a function calculator. Find the area averaged pressure at both locations and then calculate the difference.