intro story Coast / Estuary

Coast / Estuary

Coastal systems are among the most dynamic physical systems on earth and are subject to a large variety of forces. The morphodynamic changes occurring to coastlines worldwide are of great interest and importance. These changes occur as a result of the erosion of sediments, its subsequent transport as bed load or suspended load, and eventual deposition. 
 
Estuaries are partly enclosed water bodies that have an open connection to the coast. Estuaries generally have one or more branching channels, intertidal mudflats and/or salt marshes. Intertidal areas are of high ecological importance and trap sediments (sands, silts, clays and organic matter).
Within the Delft3D modelling package a large variation of coastal and estuarine physical and chemical processes can be simulated. These include waves, tidal propagation, wind- or wave-induced water level setup, flow induced by salinity or temperature gradients, sand and mud transport, water quality and changing bathymetry (morphology). Delft3D can also be used operationally e.g. storm, surge and algal bloom forecasting. 
 
On this discussion page you can post questions, research discussions or just share your experience about modelling coastal and/or estuarine systems with Delft3D FM. 
 

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Sub groups
D-Flow Flexible Mesh
DELWAQ
Cohesive sediments & muddy systems

 

 

Message Boards

Problem in starting simulation

AG
alessandro gerevini, modified 2 Years ago.

Problem in starting simulation

Youngling Posts: 4 Join Date: 11/2/17 Recent Posts
hello,
i'm new in this forum.
I'm simulating an easy case of channel (12x100m) with tidal effects. The mesh is 3x3m. When I start the flow simulation, the computation doesn't work, but not errors occurs.
I think happened for wrong boundary conditions introduction.
The domain is square (300x300m)
The model is sea (in the bottom, depth 1m) for 1/3 of the domain, a channel (1m depht) in the middle even for 1/3 of the domain and land for the rest (0m).

What're boundary conditions I have to introduce, only time series water level or other conditions like close boundaries?

thank you
Adri Mourits, modified 2 Years ago.

RE: Problem in starting simulation (Answer)

Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Alessandro,

I don't expect a not working computation without errors.

Are you able to run example "01_standard", see the source code page? If not, something is wrong with your Delft3D installation.

Is there a tri-diag-file in your working directory? This (ASCII) diagnosis file might contain error messages.

Boundaries are closed by default: you don't have to model them. Just one time series water level boundary should be enough to model a simple "harbour".

The manual (Delft3D-FLOW_User_Manual.pdf) contains a tutorial for setting up a model.

Regards,

Adri
AG
alessandro gerevini, modified 2 Years ago.

RE: Problem in starting simulation

Youngling Posts: 4 Join Date: 11/2/17 Recent Posts
Hello,
I resolved the problem. it was an obs point mistaken.
Thank you very much for your help


Alessandro Gerevini