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Hi,

I want to model a case where water is being pumped through an intake channel.
The water is pumped at the rate of 5.55 m3/sec.
I have made a simulation where I have imposed tide and current at the outer boundaries, varying through time and space.

At the end of the intake channel I have imposed a negative flow rate -5.55 m3/sec (boundary Q(1)). The flow rate is given through a liquid boundary file.

Is this a proper method of modeling a water intake channel?

Secondly if the water is taken through a pipeline which implies that water is directly taken from the river or estuary, then how is it possible to model the scenario in TELEMAC-2D. In other words how to create the condition for intake in a water body, because the nodes (at the intake) will not be at the boundary of the mesh.

I have attached the simulation case, which models the channel intake.

Thanks,
Gourish

Hi
Yes a negative discharge at an impose boundary is a good solution to model a water intake;

For the second question, you could use the source point, with a negatice discharge. In such case, the size of intake should be small in comparison to your mesh size.

Regards

Hi Christophe,
Thanks for the reply.

I had another two queries.
Firstly how can I give a source point, is it the same method as giving the tracer source with Q imposed?

Secondly the channel intake boundaries consists of 6 nodes, so when I give a intake value of -5.5 m3/sec, does it mean that each intake node is drawing water at the rate of -5.5 m3/sec. If yes then I suppose I have to distribute the inflow rate throughout the 6 nodes of the intake boundary, that is the intake boundary should have inflow value of -0.9166 m3/sec.

Regards,
Gourish