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

How add a new input to a subroutine in processes?

Gholamreza Shiravani, modified 1 Year ago.

How add a new input to a subroutine in processes?

Padawan Posts: 65 Join Date: 6/25/16 Recent Posts

Dear D3D-Delwaq community,

I want to define a new variable as fine Sediment concentration in calsed.f subroutine. I see different IPs (IP(1)=IPOINT(1) to IP(12)=IPOINT(12)) which refferes to Input Parameters/functions/seg-functions. Then using PMSA-array the values of These IPs are assigned to variables (e.g.  N       = PMSA( IP4 )). The question is, when I want to define a new variable should :1-assign a new IP-number (e.g. IP(14)=IPOINT(14)) and then using PMSA(IP14), assigne the value to the new variable. Is it true that PMSA-function reads the Input data (.inp-file) and assigne the variables with the same name in processes variables the  predifined values in .inp-file? Moreover, the IPs do not show whether they are Input- or Output-variables, how can it distinguish between Input and outpout variables?