open TELEMAC-MASCARET The mathematically superior suite of solvers

hello to all
i use a telemac_2d to model floods and river plumes entring the sea..
but after run model the currents are back to the inside of the river...

where is the problem from?

attach( file case and ...)

Hello,

Can you share a clear figure showing your issue, describing where the river, the sea ares, the issue you have, the velocity vectors + upload your BOUNDARY CONDITIONS FILE?

Chi-Tuan

hi
Thank you very much for answering my questions

Hello,

If I understand what you have done, you only have 1 liquid boundary (South-West of your domain) representing your river and you use a solid boundary otherwise, in particular in the North-East? If your sea is in NE, you should rather use a liquid boundary at this location... With something to be prescribed (surface elevation and or velocity, tidal boundary conditions).

Hope this helps,

Chi-Tuan

hi
My study area is the Caspian Sea.. there's no tidal current.
and i do not have boundray (north boundary) because i want to know plume to go forward

«My study area is the Caspian Sea.. there's no tidal current.
and i do not have boundray (north boundary) because i want to know plume to go forward»

Where do you expect the water to go then? You just have an increasing volume of water in your domain.

hi
sorry
My study area is the Caspian Sea.. there's no tidal current.
and i do not have boundray (north boundary) because i want to know (how far) plume to go forward

Hello,

Patrick is right. If you use a closed boundary your sea boundary, the level will increase if the river enters your domain. You should prescribe an elevation at the maritime boundary.

Anyway, why do you use a stage-discharge curve at your river inlet? If prescribing only a flowrate for the river and free water depth (5 4 4 code in the boundary conditions file) and if the bathymetry at the inlet is not bad, it may be better, combined with previous advice.

Be sure that your maritime boundary (north) is far enough so that the boundary location does not have any influence on the plume shape.

Hope this helps,

Chi-Tuan