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

Error initializing Nested FLOW run

Robert Jenkins, modified 4 Years ago.

Error initializing Nested FLOW run

Youngling Posts: 11 Join Date: 7/28/15 Recent Posts
Hi All,

I'm still very new to delft3D
Recently I'm trying to set up a nested FLOW run, and I get the following error while initializing the inner grid.

*** ERROR Nr. of opening points too large.

The overall grid runs fine, and the nesting tools report no issue. So far I've found no documentation on this error message.
Any insight would be great!
Adri Mourits, modified 4 Years ago.

RE: Error initializing Nested FLOW run (Answer)

Yoda Posts: 1224 Join Date: 1/3/11 Recent Posts
Hi Robert,

You have too much open boundary points.

The easiest solution is to reduce the number of open boundary points.

The more complex solution is to change the source code:
In file "....\src\engines_gpl\flow2d3d\packages\data\src\allocation\decarr.f90", line 216:
nopest = 4 * (nmax+mmax)

Increase the value of nopest and recompile the source code.

The neat solution is to remove this hard coded maximum for the number of open boundary points. That's on our To Do list.


Shereen Nazer, modified 1 Year ago.

RE: Error initializing Nested FLOW run

Youngling Posts: 4 Join Date: 8/17/18 Recent Posts

hi....can you help me by explaining the procedures for doing the nesting tool in flow module