open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello everyone,

Currently im doing a simple hydrodynamic simulation of a lagoon here in malaysia with tidal as its main input data and after that im planning to add complexcity to the simulation for callibration.

When i run the model, it ended with " exceeding maximum iteration". Ive tried to change the "TREATMENT OF THE LINEAR SYSTEM", "Solver" and "solver accuracy" as recommended in the forum but would still end up the same. Im not sure if the problem is due to my some errors in my boundary conditions or my steering file setup

The steering file that i had is probably a simplified version. i hope you guys could give me some advice and recommendation on some important coefficient or parameters that have to be key in even for a basic coastal hydrodynamic simulation.


Ive attached the input files along here. Really hope you could help.

Thanks

Don

Hi
the problem you encountered is just a problem of inconsistency between your initial condition and the boundary condition at the beginning of the computation.
Your initial water level is -1 and at t=0 you impose 1.45m on the tide boundary.
This leads the computation to try to propagate a water wall in your model which is probably not possible with your mesh and time step...

Try to start your boundary condition at -1 and increase the water level smoothly

regards

hi coulet, thanks for the immediate reply. As you suggested, i should start my boundary condition at -1 . in my steering file, my initial level is set at "-1. /flat boundary start, average"

but i also tries to change it to 1.45 just like in my tide data at t=0 but would still end with "maximum iteration at 50" when i run the model

am i doing it wrong or there could be other ways to do it?

thanks again..

Don