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. 
 

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

 

 

Message Boards

Tomas

TM
Tomás Montblanc, modified 8 Years ago.

Tomas

Youngling Posts: 2 Join Date: 9/25/12 Recent Posts
Hi all,

Could anyone help me in how introduce meteo input files? I am trying to evaluate the wind contribution to hydrodynamics conditions during a storm, but I have difficulty with input meteo files.
I have made this meteo files in MATLAB following the user manual instructions , but this error message appears in the -tri-diag file:
***ERROR Meteo input version 1.03 is not supported. Expecting version 1.03. Check the DELFT-FLOW User Manual for changes.
***ERROR Flow exited abnormally

Thank you in advance.

Best regards
U
Joao Lima Rego, modified 8 Years ago.

RE: Tomas (Answer)

hi Tomas

Depending on which version you're running, Delft3D-FLOW will expect a certain "format" of your spatially-varying wind input file header

There are two, slightly different, 1.02 or 1.03. See examples below, and adjust yours accordingly. It should work after that

### START OF HEADER
FileVersion = 1.02 # Version of meteo input file, to check if the newest file format is used
filetype = meteo_on_equidistant_grid # Type of meteo input file:
NODATA_value = -999.000 # Value used for undefined or missing data
n_cols = 172 # Number of columns used for wind datafield
n_rows = 129 # Number of rows used for wind datafield
grid_unit = degree # Unit used for grid dimensions
x_llcorner = 1.50 # Xcoordinate of lower left corner of grid (in units specified in grid_unit)
y_llcorner = 7.50 # Ycoordinate of lower left corner of grid (in units specified in grid_unit)
value_pos = centre # Coordinates given in centre or corner of lower left cell?
dx = .1 # Grid dimension dx (in units specified in grid_unit)
dy = .1 # Grid dimension dy (in units specified in grid_unit)
n_quantity = 1 # Number of quantities prescribed in the file
quantity1 = x_wind # Name of quantity1
unit1 = m s-1 # Unit of quantity1
### END OF HEADER
TIME = 000000.00 minutes since 2008-01-01 00:00:00 +00:00
...

### START OF HEADER
FileVersion = 1.03 # Version of meteo input file, to check if the newest file format is used
filetype = meteo_on_equidistant_grid # Type of meteo input file: meteo_on_flow_grid, meteo_on_curvilinear_grid
NODATA_value = -999.000 # Value used for undefined or missing data
n_cols = 15 # ...
n_rows = 16 # ...
grid_unit = degree # ...
x_llcenter = 3.1250 # ...
y_llcenter = 3.8856 # ...
dx = 0.31250 # ...
dy = 0.31229 # ...
n_quantity = 1 # Number of quantities prescribed in the file
quantity1 = x_wind # Name of quantity1
unit1 = m s-1 # Unit of quantity1
### END OF HEADER
TIME = 78168 hours since 2000-01-01 00:00:00 +00:00
...