Fluids

Fluids

problem with defining expression in CFX

    • hamda
      Subscriber

      Hi,


      I  want to define the following equation for energy source:


      410040 [W m^-3]*((t^-0.0639 )- (35424000+t)^-0.0639)


       


      My problem is that since CFX is so sensitive to dimension I have to rewrite the equation like this:


      410040 [W m^-3 s^0.0639]*((t^-0.0639 )- (35424000+t)^-0.0639)


      But I still can't run and get error.


       


      It should be mentioned  that in the equation, time is considered without dimension. I mean in the equation just the magnitude of time is important.


       


      I got these messages:


      In Analysis 'Flow Analysis 1' - Domain 'Solid': Transient analyses require that initial conditions are specified unless an Initial Values file is specified at run-time.


      In Analysis 'Flow Analysis 1' - Output Control: No intermediate transient results files have been defined.


       

    • DrAmine
      Ansys Employee

      Try with 410040 [W m^-3]*((t/1)^(-0.0639)-(35424000+(t/1))^(-0.0639))

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