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

Using HYCOM Data as Boundary

Mansur Ali Jisan, modified 4 Years ago.

Using HYCOM Data as Boundary

Youngling Posts: 8 Join Date: 1/19/14 Recent Posts

I am curious to know whether it is possible to use the HYCOM data as boundary input in Delft3D? I looked at some scripts at open earth tools but not sure which way should I proceed? Any suggestions will be very helpful for my research.

Fernando Barreto, modified 4 Years ago.

RE: Using HYCOM Data as Boundary

Padawan Posts: 74 Join Date: 6/21/12 Recent Posts
Hi Mansur,

yes, it is possible to use HYCOM Data as boundary condition to Delft3D. Actually, one can use almost any data to input a model, the problem is which type of boundary condition to apply, and how to create the boundary files. Regarding Hycom, the most suitable boundary condition is Riemann, in which one uses normal current velocity (V component in north/south and U component in east/west if your delft3d grid is not rotated in relation to Hycom's) and elevation (hycom elevation plus tide, for instance) to build Riemann invariants. To date, I don't know if there is a software to generate .bct and .ini file from HYCOM. I have generated my own code, and aim to make them available in a near future (they are Ready, but still very confusing).


Baogan Liao, modified 1 Year ago.

RE: Using HYCOM Data as Boundary

Youngling Posts: 16 Join Date: 1/15/19 Recent Posts

Hi Fernando.

I wonder if the software for generating  .bct and .ini file from HYCOM is available.