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Fluids

Fluids

Topics related to Fluent, CFX, Turbogrid and more.

Function choose in Function Calculators

    • luna6362
      Subscriber

      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
      Ansys Employee

      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.

      • luna6362
        Subscriber

        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
      Ansys Employee

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

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