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. 
 

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

 

 

Message Boards

Modelling Thermal Only Discharge

U
James Tomlinson, modified 7 Years ago.

Modelling Thermal Only Discharge

Hi All,

I would like to know if it is possible to model an additional thermal source at a particular location? This is a source of heat only and not of any accompanying flow. For example a heat-exchanger or other warm surface submerged in the water column.

My thoughts so far are:
- Include my additional heat in a modified user provided surface heat input file. However I want to control where the additional heat is inputted in the column, i.e. which layer.
- Include both an intake and outfall in the same cell that cause no net change in mass, but do provide a delta in heat/temperature. I wonder if this would work or whether the numerical scheme would not like it. I think the intake and outfall would need to be linked, i.e. a power station?
- Modify the source code somewhere to add my additional input. This might be tricky... ?


Regards,
James
Qinghua Ye, modified 7 Years ago.

RE: Modelling Thermal Only Discharge (Answer)

Jedi Council Member Posts: 610 Join Date: 3/2/11 Recent Posts
Hi James,

I guess you can try by this way,

1. Specify an intake and an outfall in the same cell, at the same or different layer.
2. The volume of intake and the outfall are the same, only the temp is different.
3. I would not expect any code modification since the functions should be there already unless you encounter some problem already?

Keep us update here and good luck!

Regards,

Qinghua YE
Adri Mourits, modified 7 Years ago.

RE: Modelling Thermal Only Discharge (Answer)

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi James,

As addition on Qinghua's answer:

Look for "power station" in the manual.

Attached are an example src- and dis- file.

Regards,

Adri
U
James Tomlinson, modified 7 Years ago.

RE: Modelling Thermal Only Discharge

Thanks I'll give this a try. I guess my query was whether anything bad would happen if a Power station had intake and outfall in the same location?
Adri Mourits, modified 7 Years ago.

RE: Modelling Thermal Only Discharge (Answer)

Yoda Posts: 1221 Join Date: 1/3/11 Recent Posts
Hi James,

I'm sorry we missed that part of your question.

The intake and the outfall are handled separately, so I don't expect problems when they are in the same location.

Regards,

Adri