Dear all,
Using the Ventura example as a blueprint I am trying to simulate the waves outside a port entrance, however the simulation crashes immediately after a couple of seconds because an instabillity occurs behind the breakwater. How can I combat this issue? Is it cause by the sudden elevation increase in front and behind the structure?
Kind regards, Andreas
Hi Andreas,
Thanks for your interest in Celeris. A sudden change in the bathymetry might be the culprit, however, I suggest following changes before trying to smooth out the bathymetry:
1 - Use a smaller time-step, such that the CFL number shown in the GUI is about 0.1.
2 - Use larger epsilon number, but note that the depth is compared to sqrt(sqrt(epsilon)) and the model is not accurate for depth smaller than this value.
Let me know how it goes.
Sasan