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

Couple TELEMAC and DELWAQ

JL
Joon Lee, modified 5 Years ago.

Couple TELEMAC and DELWAQ

Youngling Posts: 13 Join Date: 11/6/12 Recent Posts
Hello,

I am now trying to couple TELEMAC and DELWAQ (Open Source Code: Delft3D_4.01.00.rc.07).

Based on the official telemac3d example (delwaq), I applied new .slf and .cli files (a retengle), instead of the duex case. TELEMAC seems to run well, producing .hyd and .waq files. However, when they were coupled with DELWAQ, they lead to a crash at the "Waq (1)" step. When I checked the .lst file, DELWAQ does not seem to properly read/write the boundary conditions (.cli and .inp files). In other words, the .cli file, which I created with BlueKenue) does not seems compatible with DELWAQ.

I wish that I could hear something about the causes of the error and the way to solve the problem. I also have posted necessary files in attachement.

Thank you in advance.

Joon Lee

School of Construction and Environmental Engineering
Kyungpook National University, South Korea

Attachments:

AM
Arjen Markus, modified 5 Years ago.

RE: Couple TELEMAC and DELWAQ

Jedi Knight Posts: 222 Join Date: 1/26/11 Recent Posts
as the developer and maintainer of the GUI, I was able to reproduce this problem. I will look into it.

Regards,

Arjen
AM
Arjen Markus, modified 5 Years ago.

RE: Couple TELEMAC and DELWAQ (Answer)

Jedi Knight Posts: 222 Join Date: 1/26/11 Recent Posts
I found the bug - a matter of counting the boundary cells (which is not entirely trivial).

Please find attached the updated GUI. Could you try and tell me if this works? Just unpack it and replace the original GUI program by this version.
AM
Arjen Markus, modified 5 Years ago.

RE: Couple TELEMAC and DELWAQ (Answer)

Jedi Knight Posts: 222 Join Date: 1/26/11 Recent Posts
One more thing:

Open the scenario file and re-import the hydrodynamics. The latter is important because the scenario file contains erroneous information about the boundary sections. By reimporting the hydrodynamics all such information should be properly updated.
JL
Joon Lee, modified 5 Years ago.

RE: Couple TELEMAC and DELWAQ

Youngling Posts: 13 Join Date: 11/6/12 Recent Posts
Thank you!

I have not expected that I could get the reply so fast.
Thank you again! I will check it now

Regards,
Joon
JL
Joon Lee, modified 5 Years ago.

RE: Couple TELEMAC and DELWAQ

Youngling Posts: 13 Join Date: 11/6/12 Recent Posts
Dear Mr. Markus,

I have tested the new DELWAQ GUI.
It resolved the above problem, but it had a new problem.
The Waq (1) step stopped, and the .lst file showed many errors for setting "Thatcher-Harleman timelags" in Block 4.

For example in the .lst file,
------------------------------------------------------------------
Time lag option: 2
Constant time lags with defaults
Default value : 0Y- 0D- 0H- 0M- 0S
Number of overridings : 240
Number values

ERROR, invalid time lag: 590
ERROR, invalid time lag: 630
ERROR, invalid time lag: 670
ERROR, invalid time lag: 710
ERROR, invalid time lag: 750
ERROR, invalid time lag: 790
...
-------------------------------------------------------------------

Could you check again the files in attachment?

Thank you!

Joon
JL
Joon Lee, modified 5 Years ago.

RE: Couple TELEMAC and DELWAQ

Youngling Posts: 13 Join Date: 11/6/12 Recent Posts
I posted as a new thread, titled as " Couple DELWAQ and TELEMAC - Problems in TH BCs", because the I could not attach the zip file.