How to make volume integral in a zone of the computational domain
 

Hello CFDers，

I am performing the flow around an orifice. I do not know how to creat a zone, i.e. around the orifice, in the derived part of STARCCM+ to make the volume integral? Anyone could give me some advice?

Thank you in advance.

I am not entirely sure what you are asking here, however, you might try creating a derived part > threshold based on the position vector (e.g., you could capture all cells between x=0 m and x=1 m). Then create a volume integral report using the threshold part you created.