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. 




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



Message Boards

Double domain in Delft3d

Md Bin Siddique, modified 7 Years ago.

Double domain in Delft3d

Padawan Posts: 42 Join Date: 12/17/12 Recent Posts
I want refiine a grid locally . I attach a image. When I try to locally refine all horizontal grid are refined. Please solve my problem
Dmitry Kushnir, modified 7 Years ago.

RE: Double domain in Delft3d

Jedi Knight Posts: 107 Join Date: 11/9/12 Recent Posts

If you want to refine your grid locally, you'd better use the Domain Decomposition technique in this case . See Appendix B.14 of Delft3D User Manual.


Arnold van Rooijen, modified 7 Years ago.

RE: Double domain in Delft3d

Hi Md,

Perhaps it is not suitable for your application (it is a bit hard to assess with such little information), but besides domain docomposition you could consider nesting, which is basically creating a chain of two or more models (from large-scale to small-scale) that are coupled in an offline manner (results of the larger scale are used as boundary forcing for the smaller scale model(s)).

The Delft3D software package includes a handy tool for this, see also Appendix F in the Flow manual.