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Old   May 23, 2003, 04:15
Default UDF reading the temperature gradient
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does anybody know how to acces the z-component of the temperature gradient with an UDF? My UDF works well as long as I define a certain value to the temperature gradient, but when I try it with :

' dT_dz = C_T_G(cell,thread)[3]; '

FLUENT gives me an Error:

' FLUENT received fatal signal (ACCESS_VIOLATION) '

Greetings Fabian

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Old   May 29, 2003, 20:18
Default Re: UDF reading the temperature gradient
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Gradients are not defined at the first iteration. Put that command in an if like this:

if(Data_Valid_P()) { ... }

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