UZ Card
The UZ card is used to create a cylinder that will be solved with the uniform theory of diffraction (UTD).
On the Construct tab, in the Surfaces group,
click the 
Cylinder icon. From the drop-down list, click the 
Unmeshed cylinder (UZ) icon.
Figure 1. The UZ - Specify a UTD cylinder dialog.
Parameters:
- S1
- The start point of the cylinder axis (previously defined with a DP card).
- S2
- The end point of the cylinder axis (previously defined with a DP card).
- S3
- A point on the radius of the cylinder. The angle S2–S1–S3 must be 90°.
- S1 side end-cap
- Select a flat end cap or a semi-infinite end on the side of S1.
- S2 side end-cap
- Select a flat end cap or a semi-infinite end on the side of S2.
Example of UZ Card Usage
The UZ card is used to create a UTD cylinder. Note the absence of discretisation.
Figure 2. Example of cylinder created with the UZ card.