introductory course delft3d-quickin bathymetry schematisation
TRANSCRIPT
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Introductory Course Delft3D-QUICKIN
Bathymetry schematisation
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General strategy
generation, manipulation of FLOW bathymetries
stepwise bathymetry generation• Use a polygon to select your working area. All operations apply
to the area inside this polygon
• high quality data (samples) first
• various interpolation options
• various viewing options
• bathymetry manipulation
generation of non-uniform roughness or other parameter
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QUICKIN - File
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QUICKIN - Operations
Dependent on resolution of sample points versus grid cell size
A method to fill in depths if samples are insufficient
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Example of detailed coverage
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Example of poor coverage
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QUICKIN – View (1)
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QUICKIN – View (2)
Set Time step for Courant numbers in Settings – General
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QUICKIN – Settings (1)
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QUICKIN – Edit (1)
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QUICKIN – Edit – Shortcut keys
C change sample value
D delete (polygon, depth or sample) point
E* delete polygon
I insert (polygon or sample) point
R replace (polygon or sample) point
X* break up polygon
* keep pressed
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QUICKIN - AddSubDel
To transfer depths to another grid
To use Operation – Triangulation
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QUICKIN – Settings (2)
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Example (overall)
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Example (detail)
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Generation of other attributes files
• roughness file
• dry points, thin dams, observation points, dredge and dump areas
Also with Visualisation Area FLOW-GUI
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Hands-on Delft3D-QUICKIN
•build the bathymetry by working with sub-areas
•start with ‘best’ data first
•grid cell averaging when resolution samples > resolution cells
• triangulation when resolution samples < resolution grid cells
• fill in gaps with diffusion or triangulation (first copy depth to sample points)
•save intermediate bathymetries