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Fluids

Fluids

Topics related to Fluent, CFX, Turbogrid and more.

Detecting stagnation in Fluent

    • An_Engineering_Student
      Subscriber

      I am analyzing the flow through a channel, and I need to detect if there is any stagnation in the channel and quantify it so that I can compare different channel designs. ChatGPT told me about creating a cell register to locate cells having lower than a threshold velocity. Upon doing this, I i obtained the following image. 

      I would like to know if this is the correct way or if there is a better way. One thing that I noticed is that the cells marked are only the ones attached to the wall and not inside the channel. What ChatGPT said was to take the volume of the cells marked and take its percentage with respect to the total volume of the channel to compare different channels. 

       

       

       

       

       

       

       

       

       

       

       

    • Rob
      Forum Moderator

      There's also a scalar approach, look for "mean age of air" in the Knowledge base. You'll need to correct diffusivity to water! 

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