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9.3  PASS: Gravity waves in a realistic ocean basin

Author
Stéphane Popinet
Command
gerris2D3 nz.gfs
Version
1.0.0
Required files
nz.gfs (view) (download)
nz.gfs bath.gts
Running time
5 minutes 17 seconds

A tilted ocean surface is initialised in a realistic basin (the Cook strait area in New Zealand). The surface oscillates sending complex gravity waves reflecting off the coast and bathymetry (Figure 78). No explicit dissipation is added and Figure 79 illustrates the good conservation of the total energy.

This is a good test of the robustness of the method when dealing with adaptively refined complex bathymetry.

The robustness is controlled essentially by the way face-centred velocity values are computed from cell-centred values.


Figure 78: Surface height at t = 2.


Figure 79: Evolution of the kinetic energy.


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