open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi everybody,

I'm having some problems with telemac 2d. I am trying to model a hydroelectric power plant inlet channel in order to understand the pressure drops that we observe in reality.
At the entrance of the channel there is a grid that generates a high pressure drop (10 to 20 cm).
I try to represent these pressure drops by integrating a weir at the input. However, I am not getting the desired results despite many iterations.

I don't know if I set the weir correctly or if my boundary conditions are not too numerous?
To set my model, I start from the values of heights and flow downstream of the canal and on the rest of the borders I impose the observed flows.
I thus try to set the height of the weir in order to have the desired free surface rating upstream.

Can someone help me on the subject? I attach the files necessary for the calculations as well as a screen printout of the result I get on the threshold.

The cas file.

CAS FILE :

Add or change the extension to .txt

Done