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

Model dimensions too large for DELWAQ

SM
Stefan Mirbach, modified 10 Months ago.

Model dimensions too large for DELWAQ

Youngling Posts: 15 Join Date: 1/3/12 Recent Posts
Hello everyone,
I'm trying to set up a water quality simulation coupled to the results of a Delft3D-Flow simulation. When I run the preprocessor delwaq1 I get the following error message:
ERRORĀ  : real array is too big. Unable to create pointer
I found the related passage in the source code in file dhmmra.f, it's due to an integer overflow of the variable counting the size of an array. If I change the variable to an 8 byte integer, delwaq1 runs without an error. But of course, delwaq2 crashes because the array is used in many other parts of the program.
Is there any way to avoid this error and get DELWAQ to run with large models?
Best regards
Stefan
SM
Stefan Mirbach, modified 10 Months ago.

RE: Model dimensions too large for DELWAQ (Answer)

Youngling Posts: 15 Join Date: 1/3/12 Recent Posts
I already found a solution. There is a branch in the repository for big DELWAQ models.