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

 

 

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RE: Thin dams / porous plates

PS
Phil Shepperd, modified 4 Years ago.

Thin dams / porous plates

Padawan Posts: 33 Join Date: 5/31/11 Recent Posts
Hi. I'm incorporating a single, one cell, thin dam (U) into an existing well calibrated DD model (innermost grid). I then look at the difference between the "with" and "without" simulations (current magnitudes). I am finding that while the wake from the thin dam is visible in the difference file, there are other changes in the magnitude across the grid area, unrelated to the thin dam's physical presence (i.e .the issue is numerical, not real). These changes are quite significant. Same happens with Porous Plate. Thoughts please?
Qinghua Ye, modified 4 Years ago.

RE: Thin dams / porous plates

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
Hi Phil,

Thanks for reporting this! But It is hard to target what the problem is, if there is a problem. Did you also try if it stays the same without DD? Maybe it is related to the setting of thin dam or porous plate?

Beste Regards,

Qinghua
AA
aliana alis, modified 18 Days ago.

RE: Thin dams / porous plates

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AA
aliana alis, modified 4 Days ago.

RE: Thin dams / porous plates

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