3D velocity contour in ANSYS Fluent
 

Hello,

I want to visualize the flow velocity in a 3D channel, I understand that "contours" in graphics tab can only provide 2D contours as i can only select a surface to plot the contours (a plane or an existent geometry surface for example).

But I want to visualize the velocity in 3D. How can I do that?
I have tried the "pathlines" option but again only shows the velocity at the surface (the channel walls in my case).

Is there a way to do that?
Thanks!

select interior instead of boundary