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

segmentation vilation

PD
Peng Dai, modified 6 Years ago.

segmentation vilation

Padawan Posts: 59 Join Date: 8/2/12 Recent Posts
Hi

I received an error message "ERROR: Child killed: segmentation violation" when conducting a 4-layer tidal simulation. Does anyone have a solution to this problem?

Best,
Peng
Qinghua Ye, modified 6 Years ago.

RE: segmentation vilation

Jedi Council Member Posts: 610 Join Date: 3/2/11 Recent Posts
Hi, Dai Peng,

The information is not enough to target the problem. Would you also post the tri-diag file as well?

Regards,

Qinghua
DM
Dina Makarynska, modified 5 Years ago.

RE: segmentation vilation

Youngling Posts: 4 Join Date: 5/21/15 Recent Posts
I've got a similar message "child killed: segmentation violation" when trying to run PART with 2D currents for an instantaneous dye release (6000 particles).
Any ideas on what can be the reason?
Qinghua Ye, modified 5 Years ago.

RE: segmentation vilation

Jedi Council Member Posts: 610 Join Date: 3/2/11 Recent Posts
Hi Dina,

Most probably it is due to too big arrays. But we still need more information to target the problem.

Greetings,

Qinghua
DK
Daan Kuitenbrouwer, modified 5 Years ago.

RE: segmentation vilation

Youngling Posts: 2 Join Date: 3/3/16 Recent Posts
Hi All,

I have the same problem with the a combined flow and wave run. I tried to see what caused it by step by step altering the setup from a setup that worked. I found out that by adding 'MomTrm = yes', the programme d_hydro.exe stopped and I got the error 'child killed: segmentation violation delft3d'. Unfortunately no tri-diag nor a PRINT file was produced. Is there anything I could to to get the model running and still obtain the momentum balance terms (MomTrms)?

Thanks in advance,

Daan
SS
Samuel Schroers, modified 1 Year ago.

RE: segmentation vilation

Youngling Posts: 12 Join Date: 7/1/15 Recent Posts
I stumbled across the same error... tri.diag says something about:

*** WARNING No convergence in UZD at tstep: 995
*** WARNING Mass closure error exceeds    0.100E-05 after 996 timesteps.