Fluids

Fluids

Error when define new expression in CFD-Post

    • José Mantovani
      Subscriber

      Hello friends!


      So, I make some simulations of BFS using RANS turbulence models. I want plot, for example, Cp vs x/h but, when I define the Cp expression I get this error above. What can be it? I think, the expression is setting in the correct way...



      If I set for example x/h like: X/(0,0098[m]), or other expression I get the same error, and in my look all everything stay correct...


      Someone Can help Me?


      Thanks for opportunity!


      Mantovani.


       

    • raul.raghav
      Subscriber
      Mantovani, you should be using “.” instead of “,”
      For e.g. 0,5 is supposed to be 0.5
      1,225 [kg m^-3] is supposed to be 1.225 [kg m^-3]
    • José Mantovani
      Subscriber

      It's true Rahul... Ansys use the american digit code, I'm from Brazil and here use other digit code... Now it's works well, but I have other doubt.


      When I plot, for example, in FLUENT, Cf vs xH in the line of wall it's work ok, but when I do it in CFD Post I get the error in image below, whats can be it?



       


       


       

    • raul.raghav
      Subscriber

      Can you provide a screenshot of the expressions you defined for 'Cf Variable' and 'xH'? And can you also provide a screenshot of the 'lowerwall' and 'upperwall' polylines?


      For the chart definition, X-axis needs to be the 'wall' polyline and Y-axis needs to be the 'Cf Variable'.

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