Hello,
I took a look at your model.
Here below my remarks:
If you use the spectrum type N°6, you have to set a non null significant wave height at the boundaries (you set Hs=0). In order to simulate the wind-induced wave generation, you must have non-null sea-state conditions. (By the way in the version V6P1 there is a new wind generation model, a linear wave growth model, which permits to start a wave simulation from a nil wave spectrum). Since you set a nil wave spectrum at the boundaries, the model cannot run properly.
Just try to set a spectrum type N°6 at the boundaries, with a small Hs, and compare the case with the wind and the case without the wind: you should see a difference.
When you use the spectrum type N°1 at the boundaries, the wind speed you set to calculate the wind source term is also used to calculate the boundary spectrum at the boundaries (see subroutine speini.f). That's why you have an Hs of 3m at the boundaries. In this case the effect of the wind on the waves is much smaller than the finite-depth induced dissipation and therefore the wave height decreases.
Those boundary conditions are not realistic in your case. The spectrum type N°1 is used to set wave spectra on liquid boundaries that are directly exposed to an open-sea: the wave spectrum is calculated based on the speed and on the fetch of the wind blowing over all the water area that is not included in your domain.
In your case I guess the the boundaries over which you set a b.c. of type 1 are the inner harbour boundaries and therefore they are not exposed to open-sea conditions, so you cannot impose a wave spectrum of type 1.
If you want to analyse the effect of the wind-sea, the best approach in the version V6P0 is to set b.c. of type 6, specifying a very small wave height, to be able to evaluate the impact of the wind on the model results. An approach which is even better is to switch to the version 6.1 and use the linear growth wnd generation model (the manual of the version 6.1 should be online very soon)
A final, but very important, remark. The application domain of TOMAWAC does not include the harbour areas and, more generally, all those
cases in which the effects of reflection on structures and/or diffraction may not be ignored. So be very careful in using the results of your TOMAWAC simulation for your study.
If you want to analyze the effect of a wind sea enetering the harbour, in this case I would recommend to calculate the spectrum generated by the wind field at the entrance of the harbour and then propagate the wave conditions in the harbour using a phase-resolving model (such as Artemis).
Hope it helps,
Giovanni
