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


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RE: Where i can find a manual about using ice module?

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Where i can find a manual about using ice module?
manuals manual delf3d ice ice module ice modelling
Answer (Unmark)
8/16/17 12:29 PM
Hello everyone.

I have downloaded Delft3D with ice-module from and successfully compiled it. So where i can find a manual about using this module?
RE: Where i can find a manual about using ice module?
Answer (Unmark)
9/11/17 11:46 AMas a reply to Mitya Menshikov.
Dear Mitya,

Thanks for your interest in our Delft3D ice module! There is no manual for modelling ice in Delft3D-FLOW, but it is quite simple. The extra keywords for ice read:
Ice = #Deltares#
(NB. There is also another ice model, but you should use this keyword so that the Deltares’ ice model is switched on.)

The snow fall is modelled via
Fileva = #input.eva#
(If the air temperature in the *.tem file is below zero, then it is assumed that the rain fall is in the form of snow)

Only the MAP file (and not the HIS-file) contains ice output: ice thickness, snow thickness ice concentration (i.e. fraction of a computational cell that is filled with ice) and the U-velocity of ice and the V-velocity of ice. Noted that the U- and V- ice velocities can only be visualized separately yet (thus no as vectors).

The horizontal transport of ice and snow can be switched on or off, via
Dynice = #N#
The latter saves computation time.

If you provide me with your e-mail address (by e-mailing to, then I will send you a few example models.

With kind regards,

Erik de Goede