Perimeter of surface
 

Hello,

I have one question regarding post-processing.
So what I did for post-processing.
I created a plane of constant coordinate (let’s say x). An then clipped it to a area I am interested in (surface-isoclip). With the surface integral function in fluent I can calculate the "area" of this surface. But how can I get the perimeter? I need the perimeter to calculate the hydraulic diameter.

Thanks in advance.