Integrate heat flux over an area to find total heat transfer

[rcfanatic]

Hi Everyone,

I am using ANSYS Mechanical (Workbench) version 13.0. I have a radiation solution that tells me the heat flux over a surface. I need to integrate all of the nodal solutions on that surface in order to determine the total heat transfer passing through it.

I have tried outputting the MAPDL database file and using OUTRES, ALL, ALL, but when I read it into APDL and list the heat flux solutions I get the error


*** WARNING *** CP = 40.576 TIME= 18:10:40
The requested TF data is not available. The PRNSOL command is ignored.


Is there some other way to integrate these solutions, or output to the APDL?

How do you all generally determine the total heat transfer through a surface?


Thanks,
Adam

 

[sayuri]

I had same problem.

Add set,last in the beginning of your code.

After the function of that you are using for tf, write *stat
Like this (you can check this at output file)
*vget,QRes(1),node,1,tf,z
*stat,QRes
For my case, it works.
"apdl database is not holding the information that it should hold"
but with printing it, it holds.

 

[rcfanatic]

Thank you, Sayuri!

Where should I list these commands? In the ANSYS Workbench Mechanical application, I can add commands under Steady-State Thermal, but it says they will only run prior to the SOLVE command.