[Morice]

Hey guys,

I have been unable to find the right syntax to use in calculating the volume-weighted average species mass fraction as tavg is used in the calculation of the volume-weighted average of temperature. Using s0 gives a compiling error C2086: 'real S0avg' redefinition.

Calculation of volume-weighted average of temperature is as the code.

Thank you, much appreciated.

[vinerm]

The code that you attached is improper and used in wrong manner. DEFINE_PROFILE is hooked to a zone, therefore, Domain is not required. It always returns the Thread of the zone it is hooked to. So, no need to compare against anything. However, it is supposed to assign the values to the zone, which is not being done in the code. In a way, the code is serving its purpose.

So, if the objective is to determine volume averaged temperature for a zone, DEFINE_ADJUST or DEFINE_EXECUTE_AT_END makes more sense. For species, you have to use C_YI instead of C_T.

[Morice]

Originally Posted by vinerm

The code that you attached is improper and used in wrong manner. DEFINE_PROFILE is hooked to a zone, therefore, Domain is not required. It always returns the Thread of the zone it is hooked to. So, no need to compare against anything. However, it is supposed to assign the values to the zone, which is not being done in the code. In a way, the code is serving its purpose.

So, if the objective is to determine the volume-averaged temperature for a zone, DEFINE_ADJUST or DEFINE_EXECUTE_AT_END makes more sense. For species, you have to use C_YI instead of C_T.

Yes yes, you are very right, this is a code I just found on the forum and posted to show how tavg has been applied. I did not check to see if it was right. I apologize for that. I used DEFINE_ADJUST in my actual code which is in the other thread that you helped me debug. Yes C_YI is used to define species.

[vinerm]

Then, what is the current issue? Does the UDF not compile or does it give run-time error?

[Morice]

Originally Posted by vinerm

Then, what is the current issue? Does the UDF not compile or does it give run-time error?

Hey Vinerm, sorry for the late response. I have been busy with trying to rectify my geometry and I wasn't able to respond promptly. According to what you suggested, I dismantled the entire UDF and coded and compiled each line. The UDF compiled and I ran the simulation.

Thank you for your assistance, much appreciated.