## A34. propagation along a wave guideThe purpose of this test is to verify whether waves propagating
along a wave guide are indeed trapped. The wave guide consists of a straight
shallow through a deeper area.
The axis of the shallow area is in N-S direction.
4 cases are considered: - A34a
- Swan without diffraction with standard grid orientation
- A34b
- Computation with diffraction on a standard grid, with enhanced smoothing
- A34c
- Computation with diffraction on a standard grid, with moderate smoothing
- A34d
- Computation with diffraction on a standard grid without smoothing
It is seen that the solutions, both with and without diffraction, show considerable error. Apparently the model loses wave energy to the sides. |

## Swan Tests |