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. 




Sub groups
D-Flow Flexible Mesh
Cohesive sediments & muddy systems



Message Boards

segmentation violation

Zhina Mohammed, modified 3 Years ago.

segmentation violation

Youngling Posts: 23 Join Date: 12/14/15 Recent Posts
I have a problem with having error"segmentation violation" if anyone could help me with

I have this problem when I added another fraction to my model with type"bedload"
if I only have "sand" or "mud" , my model work and it run perfectly but when I added any sediment type of "bedload", I have this error
looking at diag file , it can be seen , there is not any error there.

I attached both error message and diag file

Thanks in advance
Philip Jayson-Quashigah, modified 3 Years ago.

RE: segmentation violation

Youngling Posts: 11 Join Date: 8/13/15 Recent Posts
Any solutions yet?
I am having a similar problem my flow runs alright but when I add sediment to my processes I get this error.
child killed: segmentation violation
the tri-dag file does not give any further information than this:

*** Deltares, FLOW2D3D Version, Mar 9 2017, 13:08:43
*** built from :
*** runid : morphology_dyn3
*** date,time : 2017-06-28, 18:02:20

*** MESSAGE Executable for 64-bits platform.
*** MESSAGE Double precision computation using reals of kind 8

Coordinate System: Spherical

Coordinate System: Spherical

*** MESSAGE Using UNESCO density formulation by default
*** MESSAGE Momentum solver cyclic method is specified
*** MESSAGE DRYFLP and DPSOPT both specified in MD-file. Using DPSOPT: MAX
*** MESSAGE Transport solver cyclic-method method is specified
*** MESSAGE All output files written in single precision.

Any help with this?
Qinghua Ye, modified 2 Years ago.

RE: segmentation violation

Jedi Council Member Posts: 612 Join Date: 3/2/11 Recent Posts
Hi Philip,

From a runing flow model, by adding 1 sediment fraction, you need to specify the transport boundaries as well, did you check that?