Learning Forum

[amkum]

Hello all,

I am trying to simulate two-phase flow using thermal phase change model. I am using CEL to impose interfacial area density and interphase heat transfer. However, I am getting this error

Error finding variable "TSUPERH_FL2" within domain CCL is possibly invalid.  

My CEL:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

 LIBRARY: 
  CEL: 
    &replace EXPRESSIONS: 
      BubbleNumberDensity = 50000000[m-3]
      Cpp = H2Ol.Specific Heat Capacity at Constant Pressure
      JakobNumber = (H2Ol.Density*H2Ol.Specific Heat Capacity at Constant Pressure *H2Ol.Superheating)/(H2Og.Density *(Lheat + 1.0E-12[J kg^-1]))
      Jat = JakobNumber
      Kp = H2Ol.Thermal Conductivity
      L = Lheat
      Lheat = H2Og.Static Enthalpy-H2Ol.Static Enthalpy
      Nb = BubbleNumberDensity
      NuWolfert = 12.0*JakobNumber /pi + 2.0*sqrt(PecletNumber /pi)
      Nup = NuWolfert
      PecletNumber = (dp*Urelative)/ThermalDiffusivity
      ThermalDiffusivity = H2Ol.Thermal Conductivity /(H2Ol.Density*H2Ol.Specific Heat Capacity at Constant Pressure)
      Tsup = H2Ol.Tsuperheat
      Urelative = sqrt((H2Ol.Velocity u -H2Og.Velocity u)^2+(H2Ol.Velocity v -H2Og.Velocity v)^2+(H2Ol.Velocity w -H2Og.Velocity w)^2)
      ap = ThermalDiffusivity
      apphaq = H2Og.Volume Fraction
      dp = ((6.0*H2Og.Volume Fraction)/(pi*BubbleNumberDensity))^0.3333333
      liqden = H2Ol.Density
      pe = PecletNumber
      vapden = H2Og.Density
    END
  END
END

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

 

Thanks in advance!

 

Best regards,

Amit

 

[rfblumen]

It's hard to tell from the information provided but it appears related (based on the naming in the error message) to your variable H2OL.Tsuperheat.  To investigate this further, you'll need to submit a service request to Ansys Support.