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

non-hydrostatic simulation Delft3D-Flow z-layer

Francesco Enrile, modified 1 Month ago.

non-hydrostatic simulation Delft3D-Flow z-layer

Padawan Posts: 26 Join Date: 3/25/12 Recent Posts
Hi everyone, I am trying to run Delft3D in non-hydrostatic mode. However, I have some problems since my runs end well but the result is either zero or NaNs. Where can I find a working model or a tutorial for Delft3D-Flow non-hydrostatic?
Besides, in my tri-diag result file, I have:
 WARNING: wrong input for Updwl:
  Updwl     = conteq  
 WARNING: wrong input for Precon:
  Precon    = tridiag 
 WARNING: wrong input for Krylov
  Krylov    = cg      
  Milu      =   0.94999999999999996   

I do not manage to find any reference to these warnings. Is it related to z-layers? Any idea?
Thank you very much.