thermal flow integration on an apdl surface

[MarshallDTeach]

Hello!
I am carrying out a thermal analysis in ansys apdl on a 3d model.
I would be interested to calculate the total thermal flow on a solid surface.
Is there any function already implemented in apdl to do this?
thanks for the help

 

[MarshallDTeach]

through the command sueval I can carry out the integration of the flow through
a surface.. .
but I have difficulty understanding how to select the surface
of integration. Help!