Odd "corner effects" in coupled tsunami simulations

[Carly Ringer]

Hello FUNWAVE community,

I am using FUNWAVE to simulate tsunami inundation and morphological change on the Oregon coast. I have coupled existing output from SCHISM to my grid in FUNWAVE. At the start of my simulations, I see these "corner effects" that propagate through the grid, which you can see in the attached video and plots. I am wondering if this is expected when forcing the FUNWAVE grid boundaries with the timeseries from another model output, or if it is a problem with my grid/bathymetry/grid resolution. Any input or suggestions are very much appreciated!

Thank you,
Carly Ringer

[Fengyan Shi]

Carly

It was probably caused by the three nesting boundary conditions which are not zero at the beginning. You may imagine that three water columns from the left, upper and lower boundaries collapsing inside the domain. So you may try starting the nesting from an earlier time (before waves reach the boundaries). 

-Fengyan

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