open TELEMAC-MASCARET The mathematically superior suite of solvers

I everybody,

Project: coupling Telemac2d and Tomawac to study the hydrodynamics induced by a submerged sea wall on cnoidal waves in the Bages-Sigean lagoon. (Study U,V,and HM0).

First, I generated a simplistic bathymetry but close to the one of the lagoon on a 500x500 grid, and I add the sea wall. (see figure bathy-3D)

I applied to the boundaries of my domain: Open Boundary with prescribed UV and H (555) (see figure Mesh-and-boundaries)

The problem is that the water depth does not exceed 1.20m, and I have the impression that the fact of launching the forcing at the limits in shallow water makes the model unstable

I have several problem:

1) I first try to understand and control the system with Telemac 2D. I ran a .cas file where I described the parameters and changed them to match my simulation (see T2DCAS.cas file). But the results show uv velocities that enters through a small section of my border (see fig. bug-uv).

2) I am able to launch models by coupling TELEMAC2D and TOMAWAC, but I would like to launch only waves which will then generate currents, how to specify in the .cas file of telemac2d that the incoming values are equal to 0? (option : see Tom-waves.cas).

Thank you very much for your help.

Best regards,
Mathieu

Hi
I think it's urgent for you to well read the manuals because your steering file shows a lot of strange values...

Initial water level: 0.52
Imposed water level: 3
This automatically create a shock on boundaries...


Friction law: 4 (manning)
Friction coefficient: 20
This is more a strickler value than a manning value!

Advection scheme : 2;5
Better start with default value 1;5 and adapt according to knowledge and first results...


Regards