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Extreme wave obliquity

TD
Tom Dix, modified 4 Years ago.

Extreme wave obliquity

Capillary Posts: 6 Join Date: 6/5/15 Recent Posts
Hi,

I am running a model where the mean wave direction is set at 235 degrees and am seeing severe instability in the waves at the offshore boundary (image attached). The coastline in which I am trying to calibrate the model against has this angle as the morphological wave so it is the angle I need to capture in the model. The wave model is set up as instat 1 with the following parameters:

instat = 1
dir0 = 235
Hrms = 1.0
Tm01 = 4.1

I have a theta range set of -40 - +40 with the theta bin set at 10. I have seen some improvement if I reduce the theta bin to 5. I have also tried reducing the courant number to improve stability and this does not help.

Can you suggest any ways to improve the stability of waves in this setup?

Thanks,

Tom

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