In order to make a comparison with the experimental data, a part needs to be created on which to plot the duct wall pressure ratio. This is achieved by intersecting a plane with the surface corresponding to the duct wall, resulting in a line surface.
An interactive in-place dialog will appear on the left of the Graphics window to allow definition of the derived part.
0.0010 for the origin and 1.0 for the normal. Make sure that all other values are zero.
In the intake window, a new node representing the implicit surface just created is added under the Derived Parts node: plane section.
It is now possible to plot data on the new implicit surface.