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DELWAQ

DELWAQ is the engine of the D-Water Quality and D-Ecology programmes of the Delft3D suite. It is based on a rich library from which relevant substances and processes can be selected to quickly put water and sediment quality models together.

The processes library covers many aspects of water quality and ecology, from basic tracers, dissolved oxygen, nutrients, organic matter, inorganic suspended matter, heavy metals, bacteria and organic micro-pollutants, to complex algae and macrophyte dynamics. High performance solvers enable the simulation of long periods, often required to capture the full cycles of the processes being modelled.

The finite volume approach underlying DELWAQ allows it to be coupled to both the structured grid hydrodynamics of the current Delft3D-FLOW engine and the upcoming D-Flow Flexible Mesh engine (1D-2D-3D) of the Delft3D Flexible Mesh Suite (or even other models such as TELEMAC).

'DELWAQ in open source' is our invitation to all leading experts to collaborate in further development and research in the field of water quality, ecology and morphology using Delft3D. Feel free to post your DELWAQ related questions or comments in this dedicated forum space. If you are new to DELWAQ, the tutorial (in the user manual) is a good place to start. A list of DELWAQ related publications is available here.

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Sub groups
D-Flow Flexible Mesh
DELWAQ

Cohesive sediments & muddy systems

 


Message Boards

How is momentum treated with culverts?

NC
Nejc Coz, modified 3 Years ago.

How is momentum treated with culverts?

Youngling Posts: 2 Join Date: 10/12/15 Recent Posts
Hi,

I am using modified culverts to represent the tidal turbines (discharge prescribed with a "Hill chart") in a tidal lagoon. The lagoon is enclosed with thin walls and the intake and outlet of a culvert are in the adjacent cells, one on each side of a thin dam. I am worried about how momentum is assigned at the discharge from the culvert.

In the manual it says that for discharges: "The momentum released to the flow due to a discharge is distributed over the velocity points that bound the quadrant in which the discharge is released." But my understanding is that only the Type=momentum discharge has the functionality where user can specify the direction and magnitude of out-coming velocity.

So how is the momentum then treated with culverts? It doesn't say anywhere in the manual. All I could find is that culverts are considered a special form of in-out discharge

Does anyone know where in the source code the discharges are added to the momentum terms, so I could potentially prescribe the direction manually? I did some investigation myself, however the source code can be quit hard to follow.

Any help will be much appreciated emoticon

Regards, Nejc
MS
Misdacles Smadith, modified 5 Months ago.

RE: How is momentum treated with culverts?

Youngling Posts: 23 Join Date: 5/13/20 Recent Posts
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Tim Johns, modified 1 Month ago.

RE: How is momentum treated with culverts?

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John D, modified 5 Months ago.

RE: How is momentum treated with culverts?

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Jamie Moreno, modified 4 Months ago.

RE: How is momentum treated with culverts?

Youngling Posts: 1 Join Date: 6/30/20 Recent Posts
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chris johnson, modified 4 Months ago.

RE: How is momentum treated with culverts?

Youngling Posts: 9 Join Date: 7/1/20 Recent Posts

Box culvert tidak membutuhkan galian tanah yang dalam, sehingga hal tersebut cukup memudahkan kontraktor. Kemudahan dan kecepatan pemasangan membuat pemakaian box culvert sebagai saluran air semakin diminati. Tata cara memasang box culvert adalah sebagai berikut :

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Benjamin Konrad, modified 4 Months ago.

RE: How is momentum treated with culverts?

Youngling Posts: 1 Join Date: 7/24/20 Recent Posts
The American Society of Testing and Materials (ASTM) Specification C1577, entitled Precast walmart paystub Reinforced Concrete Monolithic Box Sections for Culverts, Storm Drains, and Sewers Designed According to AASHTO LRFD, can be used to design and detail these systems. 
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tellmarcos portal, modified 4 Months ago.

RE: How is momentum treated with culverts?

Youngling Posts: 1 Join Date: 7/28/20 Recent Posts
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Arnold Marlow, modified 10 Days ago.

RE: How is momentum treated with culverts?

Youngling Posts: 1 Join Date: 11/16/20 Recent Posts
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