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

Starting FLOW run at time other than 00:00:00

Arie Reath, modified 6 Years ago.

Starting FLOW run at time other than 00:00:00

Youngling Posts: 4 Join Date: 7/16/12 Recent Posts
I would like to start a Delft3D run that starts at 2014 03 07 12 00 00. My Tstart is set to 720 minutes, Tend is set to 3600 minutes for a 48 hour run. These times are reflected in my .bct and .bcc files, yet I keep getting an error saying: "*** ERROR Requested time lies before available times for current" then the flow exits abnormally.

I have tried a simple case using the gui, then used those files to start d_hydro.exe.

Any help would be much appreciated.
Adri Mourits, modified 6 Years ago.

RE: Starting FLOW run at time other than 00:00:00

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

All times are related to the reference date. More precisely, time 00:00:00 on the reference date. Your Tstart looks correct.

Are the reference dates in your .bct/.bcc file the same as in the .mdf file?

What happens when the first time used in the .bct/.bcc file is not exactly the same as the start time of the simulation period but a bit more in the past?

If this doesn't help: please zip your input files and attach them to a post on this forum.