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

Nested model and spiderweb use

Anonymous, modified 8 Years ago.

Nested model and spiderweb use

Posts: 1
I have a nested model generated from an overall course model. The overall model uses a spiderweb, but I am not sure if I have to use the spiderweb file for the Nested model.
Joao Lima Rego, modified 8 Years ago.

RE: Nested model and spiderweb use

Dear Anonymous

You need to "call" the spiderweb meteo file in both cases, i.e. the larger and the nested model. Since the *.spw file is in "absolute coordinates" (see e.g. header below), you use the same file.

grid_unit = degree
spw_radius = 1000000.00
spw_rad_unit = m
n_quantity = 3
quantity1 = wind_speed
quantity2 = wind_from_direction
quantity3 = p_drop
unit1 = m s-1
unit2 = degree
unit3 = Pa
Abnet legesse, modified 8 Years ago.

RE: Nested model and spiderweb use (Answer)

Youngling Posts: 10 Join Date: 12/2/11 Recent Posts
Dear Joao,

Thanks for the reply.