That makes sense.

Talking about the cell volume, I am not clear about it. I have a 2D axisymmetric mesh, and I am trying to figure out what Fluent considers as "cell volume". 

Based on the data, I found it to be the "cell-volume-2d" times "y-coordinate" (radial coordinate). That means it considers 1 unit rad in axisymmetric angular dimension. 

May I ask if I am correct on this?