Learning Forum

[Luna Chen]

Hi everyone.

I need to measure the average fluid velocity in a specific part of my model, but I'm not sure which function to use within the Function Calculator.

There are four options that I think might be suitable, but the velocity results from these four options vary significantly.

Which one should I use to obtain the correct result? My simulation involves incompressible flow.

1.areaAve 2.ave 3.massFlowAve 4.massFlowAveAbs

[Essence]

Hello,

Since the flow is incompressible, no energy equation solved (simple flow without reversed flow), you know that velocity = (mass flow rate)/(constant density*cross section area). You can determine mass flow rate, density and cross section area. You can then verify with which of the four fits to your application.

[Luna Chen]

Hello Essence,

Thank you for your response.

Actually, my model is quite complicated.So it is hard to determine the velocity using that simple formulation.

And I just want to know the velocity of the upper part of my model.

However, I might use a simple tube model to confirm which function is suitable to use.

I will try it! Thank you so much!

[Essence]

Yes, please use a sample case for the verification and get back in case you need help.