A35. Diffraction test with harbour configuration

In this test the procedures of Swan with diffraction are tested for a near-realistic harbour configuration with corners etc. The results are compared for a line in het inner harbour basin.
Tests are carried out for a non-standard orientation of the computational grid.

3 cases are considered:

no diffraction
standard diffraction, option 1, no smoothing
diffraction option 1 with smoothing
diffraction option 2
diffraction option 2 with singularity approximation; enhance factor is 50

Runs A35d and A35e also show a parameter file for one test point; this is used to get an idea of the convergence behaviour. For the same purpose a plot is made of the quantity DHsign; the convergence is the worst in areas where this quantity is large.

© 2012: Nico Booij