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




RE: Need help for applying D-Water Quality on 0D

Fatemeh GholamiMahyari, modified 4 Months ago.

Need help for applying D-Water Quality on 0D

Youngling Posts: 23 Join Date: 4/8/16 Recent Posts
Hello Everyone

Thanks to your group I could successfully simulated my pond in D-WAQ. This is 3D model.I would like to do a 0D model and compare my result. But I could not find anything in any manual about that but the sentence 'D-Water Quality can be applied just as easily on 0D, 1DV, 1DH, 2DV, 2DH and 3D schematisations of a water body' in Delft3D Functional Specifications. the link below
Could you help me and introduce some reference that how can do 0D model?

delwaq - water quality delwaq delft 3d flow
Arjen Markus, modified 4 Months ago.

RE: Need help for applying D-Water Quality on 0D

Jedi Knight Posts: 150 Join Date: 1/26/11 Recent Posts
Normally you import the flow field from a hydrodynamic model - ultimately that means that you have the volumes, flows, areas, dispersion lengths and the pointer table that describes the connectivity of the segments from such a model. (Using the graphical user-interface, you do that via the "hyd-file"). But that is only one way. You can provide these data in another form as well - independently from any hydrodynamic or hydrological model.

I have attached an example with four separate segments - as there is no exchange defined between these segments (the number of exchanges is zero), they are four independent 0D models. I use that to examine the details of the various processes (hence also the references to all kinds of include files). It also shows that you can define the geometry independently of any external model. You can even define a flow field if you want to - to have a river coming in/going out for instance. Details are provided in the documentation of the input file.

There are other possibiities too (define a very small hydrodynamic model for instance), but I find this to be the easiest way for this sort of modelling.
Fatemeh GholamiMahyari, modified 4 Months ago.

RE: Need help for applying D-Water Quality on 0D

Youngling Posts: 23 Join Date: 4/8/16 Recent Posts
Dear Arjen

Thanks a lot for your respond, I will try the one with no need for Hydro.