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

RE: GUU, GUV and GVV ERROR at boundary

JC
Jessica Chassereau, modified 7 Years ago.

GUU, GUV and GVV ERROR at boundary

Youngling Posts: 15 Join Date: 4/21/11 Recent Posts
Good Afternoon,

I am getting the following error along the entire length of my flow boundary:

*** ERROR Curvi-linear coefficient GUU at 1362 2 = 0, while point is active

I do not understand why I would be getting this error. Can someone please tell me what I am doing wrong? The grid node spacing in my computational grid is 1mx1m. I have attached the diagnostic file to this message to provide extra information.

Thank you,

Jessica
Bert Jagers, modified 7 Years ago.

RE: GUU, GUV and GVV ERROR at boundary (Answer)

Jedi Knight Posts: 201 Join Date: 12/22/10 Recent Posts
Hi Jessica,

This problem is likely caused by a known issue in Delft3D-FLOW 3.61.00.12401 dated Aug 26 2010, which predates the open source release. From our bug tracking system, I conclude that the problem only occurs if there are more than 998 open boundary cells and that it has been solved in Delft3D-FLOW 3.61.00.13327.

It seems that the 4.00.00 and 4.00.01 Delft3D releases with precompiled executables still include the old delftflow.exe with version number 3.61.00.12401. However, if you run a simulation via the user interface it should use the deltares_hydro.exe and flow2d3d.dll which are of later date, so it seems that you are starting your simulation via a batch file. I would recommend to call deltares_hydro.exe from your batch file rather than delftflow.exe. If there is a specific reason to stick with the delftflow.exe, please contact Delft3D support to request the 3.61.00.13327 version (refer to this post for context).

Best regards,

Bert
JC
Jessica Chassereau, modified 7 Years ago.

RE: GUU, GUV and GVV ERROR at boundary

Youngling Posts: 15 Join Date: 4/21/11 Recent Posts
Hi Bert,

First of all thank you for your reply. I realize now that I have to update the version of the code that I am running in order to fix the problem.
I am running the Windows version of the code that was purchased over a year ago, which I received on a disk. Since then I have only updated the license file that have been sent to me from Deltares via email correspondence. In order to update the version of the code, do I have to download the open source code and compile it? If so, how would I take the compiled code and replace the older files that I installed from a disk?

Thanks!
Jessica
Emiel Moerman, modified 7 Years ago.

RE: GUU, GUV and GVV ERROR at boundary (Answer)

Padawan Posts: 84 Join Date: 3/10/11 Recent Posts
Hi Jessica,

Considering the date of your latest post, I conclude that the question you were having is solved.
If this is not the case, please re-post it. Considering that it is a installation/compilation related question, please post the question in the discussion group General, category Questions (obtaining, compiling the code).

Kind regards,

Emiel Moerman
AR
Arie Reath, modified 5 Years ago.

RE: GUU, GUV and GVV ERROR at boundary

Youngling Posts: 4 Join Date: 7/16/12 Recent Posts
Hi Bert,
I ran into a similar issue, except my case is slightly different. I have a working case, 447x362 grid spacing 50 m. I want to make a dry points file, which I have done. There are 714 lines to this file, approximately half my domain is dry. When I run the same working case with this dry points file, it crashes with the same error. " ERROR Curvi-linear coefficient GUU at 33 1 = 0, while point is active." (same for GUV)

Any ideas?

Thanks,
Arie
JH
Josha Humberston, modified 1 Year ago.

RE: GUU, GUV and GVV ERROR at boundary

Youngling Posts: 4 Join Date: 12/23/16 Recent Posts

Hello,

 

Are there any other know circumstances for this type of error message? I am running a coupled FLOW-WAVE simulation using domain decomposition, but my most recent adjustments resulted in many of these error messages:

*** ERROR Curvi-linear coefficient GVV   at     2   35 = 0, while point is active
*** ERROR Curvi-linear coefficient GVV   at     3   35 = 0, while point is active
*** ERROR Curvi-linear coefficient GVV   at     4   35 = 0, while point is active... and so on

I am using FLOW trunk version 6.02.12.7430 on a linux machine. This only seems to happen for one of the domains, but I see nothing different about it. I'm happy to share any files if they'll be helpful. Thank you in advance!

 

- Josh

 

WK
wang kemeng, modified 7 Months ago.

RE: GUU, GUV and GVV ERROR at boundary

Youngling Posts: 1 Join Date: 5/19/17 Recent Posts

Hello everyone

In the Windows version of FLOW, this problem will be solved when you add an enc. file.

The number of girds in my simulation is 385*324, applying a water-level boundary and a river discharge boundary.

Good luck