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


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Not able to generate .bct file using Nesting2

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Not able to generate .bct file using Nesting2
64bit format nesting 64 bit d-flow history file .bct nesting2
Answer (Unmark)
12/4/17 6:37 AM
I would bring to your notice something I have observed after the compilation of the latest version of Delft3D.

While doing the 'Nesting 2' operation (Delft3D GUI>Flow>Tools>Nesting2), with a history file generated using the latest version (64bit,), an error was coming up- '***ERROR: reading DELFT3D-FLOW his data file (DT)' . (in the .dia file).
When I did the same operation on a history file generated in a Delft3D version compiled before June 2015 (32bit version), it was working and generated the required '.bct' file.

Here is what I did:
-generated the observation file and administration file using 'Nesting 1', providing the required grid and boundary data as inputs.
-'.mdf' was run using the '.obs' file generated in the previous step.
-Nesting2 was attempted but it stopped with the above mentioned error in the '.dia' file.
History file was opened in QUICKPLOT and it showed all results for all the observation points.

In the older version:
-the same '.obs' and '.adm' files generated in the previous steps were used to run the same '.mdf' in an older version of Delft3D installed in another system.
-the history file generated in older version was used for 'Nesting2' in the old as well as latest version of Delft3D and it worked in both the versions, generating a '.bct file'.

This gives me an impression that the format of the history file is different in the two versions and NESTING 2 in the latest GUI is not compatible with the latest version of Delft3D. (64bit).
Am I right or is there something that I should know/did wrong.?
I was planning to shift to the 64bit version and remove the 32 bit version from the other PC too. Please advise me on this.

Here are the steps I had followed during installation:

Downloaded the source code from tags>7426.
Used the 64 bit compiler in Visual Basic to compile the code.
Obtained and installed the 4.03.00 GUI and license from Deltares. (64bit).
Copied the compiled code into the Deltares folder(C:\program files\Deltares) as mentioned in the installation instructions.

The software has been working fine for all the modules except for NESTING2.
RE: Not able to generate .bct file using Nesting2
Answer (Unmark)
12/6/17 6:58 PMas a reply to Akash Ashok.
I got similar problem. Who have a suggestion?