open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi all,

I'm trying to simulate a flushing scenario in a B=0.61m wide flume and I'm trying to do it with a small sluice gate with 0.05m * 0.05m inlet and outlet crossection. I built a dike which divides the flume into the upstream and downstream part. On the upstream, there's h0=0.25m water depth at the initial moment and I'd just like to see it flow downstream through the culvert. However, the discharge of the culvert is really small, eventhough it should be fine with my given parameters and considering how Telemac computes the culvert discharges. I have the experiment data, that's why I know what the discharge should be.

Can somebody give me some idea if there's a limitation or accuracy I should increas or something else?

I attached the documents.






Thank you in advance!

Sincerely,
Alex