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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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D-Flow Flexible Mesh
DELWAQ

Cohesive sediments & muddy systems

 


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Non-stationary spectral boundary for combined flow-wave case

SL
Sha LOU, modified 1 Year ago.

Non-stationary spectral boundary for combined flow-wave case

Youngling Posts: 6 Join Date: 4/22/14 Recent Posts

Hi, All.

I want to setup a combined flow-wave case with the non-stationary 2D spectral wave boundary.

1. According to the WAVE-Manual A2.9, I thought I can directly set the boundary in "boundary conditions-specification of spectral-select from file", insteady of the keywords in .mdw file. Am I right? 

2.In the example of  a 2D stationary Cartesian co-ordinates file (wave-manual page 169, there has no 2D Non-stationary case file), there has two locations in the file.  I know that the co-ordinates of locations in the 2D spectral files are ignored when SWAN reads this. The boundary location is specified in the "define boundary". so are these two locations the boundary start and end location? should the input 2D spectral file have two locations information, whether I choose the space-varying button or the uniform button?

3.when I run the flow-wave case, the PRINT file says the following message and the calculation was stopped. do you know why? the boundary location are the same as the flow condition in MDF file with the same grid. I don't think it is outside the grid.

  BOUN SHAPE JONSWAP   3.30 PEAK DSPR POWER
    
  BOUN SEGM IJ         62       321       401       321                  &
 ** Error            : Boundary point outside comp. grid
 ** Error            : Boundary point outside comp. grid
                      CON  FILE 's.bnd'  1
 ** Warning          : No points on the boundaries found
 ** Warning          : At least two points needed for a segment
    
  BOUN SHAPE JONSWAP   3.30 PEAK DSPR POWER
    
  BOUN SEGM IJ        401       321       401         2                  &
 ** Error            : Boundary point outside comp. grid
 ** Error            : Boundary point outside comp. grid
                      CON  FILE 's1.bnd'  1
 ** Warning          : No points on the boundaries found
 ** Warning          : At least two points needed for a segment
    
  BOUN SHAPE JONSWAP   3.30 PEAK DSPR POWER
    
  BOUN SEGM IJ        401         2        61         2                  &
 ** Error            : Boundary point outside comp. grid
                      CON  FILE 's2.bnd'  1
 ** Warning          : No points on the boundaries found