Learning Forum

[me18s031]

I am trying to creating a user surface from File in CFD Post. This is the file script as given in the documentation of CFD Post:

"""

An abbreviated user surface file, that could be read back into CFD-Post, is shown below:

[Name]
Plane 1
[Data]
X [ m ], Y [ m ], Z [ m ], Area [ m^2 ], Density [ kg m^-3 ]
-1.77312009e-02, -5.38203605e-02, 6.00000024e-02, 7.12153496e-06, ...
-1.77312009e-02, -5.79627529e-02, 5.99999949e-02, 5.06326614e-06, 
.
.
.
[Faces]
369, 370, 376, 367, 375
350, 374, 367, 368, 351
.
.
.
[Name]
Plane 2
.
.
.

This is similar to the polyline data format described earlier (POLYLINE Data Format), except for the connectivity information. Instead of defining lines, this file defines faces (small surfaces), each by 3 (triangle) to 6 (hexagon) points. The points must be ordered to trace a path going around the face. For proper rendering, the faces should have consistent point ordering, either clockwise or counterclockwise. Each face is automatically closed by connecting the last point to the first point. Face connectivity data is listed in the Faces section and references the points in the Data section, where the latter are implicitly numbered, starting with 0.

"""

I am not able to understand the data format for Faces section. Are those node numbers and how to specify them?

[me18s031]

I have created the user surface but CFD post doesn't show the data on the surface by default.
It shows zero velocity everywhere on the user surface
But the actual velocity contour on the surface is as follows:

Why the user surface data is not shown by default?