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Fluids

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How to make performance map of an impeller

    • asustark700
      Subscriber

      Hey Guys!
      How are you doing?

      Well, I've been designing an impeller,
      Kindly consider me as a beginner throughout the conversation.

      Now I am trying to generate a performance map {nominal mass flow rate v/s pressure ratio} of the impeller to know the operational range. 
      However, I've gone through the Ansys documentation & YouTube but found no tutorial. 

      If there are already some tutorials, please provide me with any references.
      In case of unavailability, we can continue with the threat. 
      But I don't have any clue how to start.

      It would be warmly appreciated if any replies.

      Sending positive vibes!
      cheap person 😁

    • Federico
      Ansys Employee

      Hi!

      this example is not specific to an impeller case but shows how to conduct a parametric study in Fluent and create relevant reports for each design point. Chapter 9: Performing Parametric Analyses in Ansys Fluent

      I believe this could at least get you started!

      • asustark700
        Subscriber

        Thank you so much Frederico for replying to me!

        After watching this tutorial, I can say "This can get me started!"

        but I have some doubts:

        1. His input parameters are {inlet_temp and inlet_velo}, output parameter is {outlet_temp}, which is not time dependent.
          In my case, My input parameters are {speed} and output parameters are {pressure ratio, mass flow rate}, which is time dependent.

          POV: If I am wrong anywhere please correct me and if there is another method please tell me.

        2. My analysis is going to be transient. I cannot afford high computational costs. so how can I reduce it?

          POV:  I run the steady simulation for 3 hours with 1000 iterations and transient simulation for one and a half hours with 200 time steps with 5 sub-iterations.

        Sending positive vibes... Again!
        cheap person 😁

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