TELEMAC-MASCARET Forum: Salinity stratification leading to high velocities in surface layer(s) (1/1)

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TOPIC: Salinity stratification leading to high velocities in surface layer(s)

Salinity stratification leading to high velocities in surface layer(s) 8 years 2 months ago #23701

Joanna

Hi!

Im building a 3D-model for an area in and around a port. A very defined salinity profile arises when the outflow (700 m3/s) exits the port gate and meets the ocean. The fresh water "slides" on top of the salt water and since the top layer(s) (where the fresh water flow occurs) have a smaller cross sectional area compared to the harbour channel the velocity increases quite drastically, see attached jpg. (wind = SW 10 m/s).

Is this stratification and increase in velocity realistic? It seems to be flowing with this pattern for quite some 1000 m up along the coast aswell. Ideas or keywords to increase the mixing?

I have tried without wind and with a smaller flow (70 m3/s) resulting in the same velocity increase at the port gate.

Thanks in advance :)

Joanna

Attachments:

Velocity_.jpg (112KB)
Klaipeda_v1-20.cas (7KB)

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Salinity stratification leading to high velocities in surface layer(s) 8 years 2 months ago #23766

OBD OFFLINE Junior Boarder Posts: 33 Thank you received: 16	Hi Joanna, It seems not bad. Most of the time we have the problem of mixing and we have to define a new damping function to increase the stratification. Without more information, it is not possible to say much more! Regards, Olivier
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