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I have a question which is quite basic regarding specification of prescribed boundary condition for multiple open boundaries.

For example, I have 3 open boundaries with prescribed flow rates in my geometry and I want to prescribe different values for each of them (0, 250,and 500 m²/s respectively). To do that I have something like this in my cas file:
My question is, how does TELEMAC2D figure out which one of the three open boundaries is the first, second and third? That is, how do I figure out the order of the prescribed flow rate values (e.g. 0.0 ; 250.0; 500.0 or 500.0; 0.0; 250.0)?

And the same question for prescribing different liquid boundary conditions in a liquid boundary file. That is, if now I want to prescribe three time-dependent flow rate (i.e. three time series of flow rates) for each of the three open boundaries. I'm assuming I need to use a liquid boundary file (.liq) for this. How should I decide the order of the three time series when I prepare .liq file?

Thanks!

Hello

the safest way to know the boundary numbering is to read the top of the listing. Telemac writes the following:

There are 3 liquid boundaries:
boundary 1 begins with node with global number 1258
and ends with node with global number 25487
boundary 2 ...

in a general way, Telemac starts the numbering by the boundary with minimum x+y and then goes in the trigonometric orientation.

I hope that this helps

with my best regards

Riadh