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Old   April 4, 2008, 07:08
Default Cp as a function
  #1
Mareike
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Hi there,

I try to set the ideal gas Cp as a function of Cp. Therefore I wrote a fortran user routine which calculates a cp for a specific temperature. How can I manage this? Each time I try to set my function NOT as interpolation data the solver crashes. If I interpolate data with a function everything is fine. Is there something wrong with the code? I have a (for testing) fixed value of 2000.0 which I return.

Any ideas? Plz help me
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Old   April 4, 2008, 07:32
Default Re: Cp as a function
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andy2O
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"Cp as a function of Cp"...

Is that a typo? Surely Cp cannot depend on Cp! You would get in a real mess!

Do you really need to use Fortran? If you can do the job using CEL expressions I think your life would be made much easier.

andy
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Old   April 4, 2008, 08:06
Default Re: Cp as a function
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Mareike
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Hi,

sorry, I meant Cp as a function of (T,Pressure).

I really need fortran.

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Old   April 5, 2008, 11:49
Default Re: Cp as a function
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Rogerio Fernandes Brito
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CFX has already this function (CP) inside!
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Old   April 8, 2008, 04:55
Default Re: Cp as a function
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HekLeR
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So this is a real gas then?
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