Update: I got it to work! I ran the Paraview 5.8.0 64-bit, & it could open my OpenFoam case files. I did get the velocity vectors to display. I used the Calculator with result=sqrt(U_x^2 + U_y^2) . I didn’t see a reason to include U_z. These vectors had orientation, length, and finally color set by the U_magnitude.
I couldn’t display the Vectors on my cut plane which is midway thru the cells of my domain. It displays duplicate sets velocity vectors on the domain surfaces. Any suggestion on how to fix this?
The old ParaView (possibly pre-4.1) had a detailed panel for Velocity Vectors. This version: 5.8.0 seems to only have these 3-D conical appearing structures? Is there any way to get the flat 2-D appearing arrows?
Velocity Vectors from an old version of ParaView. Illustration found on-line.
Thanks again for any help or suggestions & sorry for too many questions. New PV user here obviously.