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. 
 

** PLEASE TAG YOUR POST! **

 

 

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

 

 

Message Boards

Wind input in online coupled FLOW-WAVE model

BP
Benjamin Phillips, modified 2 Months ago.

Wind input in online coupled FLOW-WAVE model

Youngling Posts: 2 Join Date: 3/1/16 Recent Posts
Dear all,
I am attempting to input spatially and temporally variable wind and pressure fields in Delft3D, in the form of an equidistant grid. I have managed this separately for FLOW and WAVE using *amp, *amu and *amv files, but cannot yet work out how to do this in a coupled model. I have tried the following:
a) Specifying the wind input files in both the MDF and MDW files. When this happens an error is raised stating a point in the flow grid is outside the grid in the x direction.
b) Specifying the wind input files in the MDF file only, and setting FlowWind in the MDW file to 1 (also tried 2). When this happens, a NEFIS message 6004: Group 'WIND' does not exist in data file.
Is there a way to force the communication file to write wind fields, or any other mechanism by which active winds in FLOW can be passed to WAVE? According to the manual there is a means by which this can be accomplished.
I am using the 7545 version of Delft. MDF and MDW files are attached.
Cheers
Ben