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DSD-INT 2018 Latest developments in Dutch river applications using the Delft3D FM Suite - de Jong

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Presentation by Jurjen de Jong, Deltares, The Netherlands, at the Delft3D - User Days (Day 1: Hydrology and hydrodynamics), during Delft Software Days - Edition 2018. Monday, 12 November 2018, Delft.

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DSD-INT 2018 Latest developments in Dutch river applications using the Delft3D FM Suite - de Jong

  1. 1. Latest developments in Dutch river applications using the Delft3D FM Suite Jurjen de Jong (Deltares) Delft Software Days – Edition 2018 12 November 2018
  2. 2. Content • About the project • Data management • Grids • Calibration
  3. 3. Models of the Dutch Water System Hydrodynamic models in 1D, 2D, 3D Applications: • Real-time forecast (flood and drought) • Permits • Scenario studies big projects • Strategic long term planning (e.g. climate) • Short term water distribution (e.g. at droughts) • Assessing dikes Available at online servicedesk Meuse
  4. 4. Meuse river • Length: 240 km • Rain driven river: • Minimum: 10 m3/s • Median: 50 to 100 m3/s • Maximum: 3000 m3/s • Possible extreme: 4000 m3/s • Shipping on parallel channels and backwaters of weirs (7)
  5. 5. 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 1993 1995 2006 2008 2009 2010 2011 2012 2013 hr2006 1993 1995 2003 impr. 2012 2013 2014 2015 2017 2018 2019 beno13 beno14 hr2017 beno15 beno172018 2019beno19 1993 1995 2010 2014 WAQUAWAQUADELFT3DFM FourthgenerationFifthgenerationSixthgeneration Generations of models for the River Meuse Calibration Actual situation Future situation Models within a generation: • Uniform model setup for all models • Schematisation using data protocol • Calibration of results • Reproducible workflow • Automation of workflow as much as possible
  6. 6. Baseline: Geographical database Bed levels
  7. 7. Baseline: Geographical database Bed levels Bed levels as 1D lines
  8. 8. Baseline: Geographical database Bed levels Bed levels as 1D lines Land usage
  9. 9. Baseline: Geographical database Bed levels Bed levels as 1D lines Land usage Locations
  10. 10. Baseline: Variant-measure workflow Reproducible workflow: Measures as building blocks to change variants Variant Measure
  11. 11. Discharge Eijsden 2018
  12. 12. Changes to the system Ecology (embankments)Protection for high water Ecology (embankments)
  13. 13. Baseline schematisations 1995 2010 2014 2018
  14. 14. Baseline schematisations 1995 2010 2014 2018
  15. 15. Grid Requirements Main channel: • Curvilinear grid • Alignment with flow direction • Transverse: 6 to 10 cells; at least 10 m; • Longitudinal: 40m; • Aspect ratio: 1:4 Floodplains: • Alignment with • Quadrangles (in contrast to triangles) • Less grid cells, but more labour intensive • 40 meter • Aspect ratio: 1
  16. 16. Curvilinear to flexible Curvilinear grid Flexible mesh
  17. 17. Effect of alignment in the floodplains Upstream of improved alignment Stroomsnelheid (m/s) 5 cm Steep water level gradient of 3 m in 4 km
  18. 18. Grid generation (Negenoord)
  19. 19. Grid generation (Elsloo, Meers)
  20. 20. Grid at bifurcation (Pannerdensche Kop)
  21. 21. Grid for the future (Maasband) Current situation Future situation
  22. 22. Where Meuse and Rhine Meet
  23. 23. Grid cell shapes
  24. 24. Timestep per cell 250 m3/s 2260 m3/s 3430 m3/s Δ𝑡 ≤ Δ𝑥 ⋅ 𝐶𝐹𝐿 𝑢 Courant criterium:
  25. 25. Timestep validation Courant limiting cells worth optimising
  26. 26. Statistics: Orthogonality Soft goal: < 0.02 Hard goal: < 0.10 Computational requirement: < 0.50
  27. 27. Statistics: Smoothness Soft goal: Smooth look Computational requirement: -
  28. 28. Base roughness main channel North SeaBelgium Alluvial riverGravel
  29. 29. Dune height 0.16 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 0 10 20 30 40 50 60 70 80 90 100 Duneheight(m) Distance (km) Dh (m) Hd_fit 13 per. Mov. Avg. (Dh (m)) 130 per. Mov. Avg. (Dh (m))
  30. 30. Calibration factor Roughness Floodplains White Colebrook (51) Manning (53) Chezy (52) Vegetatie (152) Bomen (251) Heggen (202) Combinaties (2) Main Channel White Colebrook (51) Simplified Van Rijn (101) Uniform roughness definition Manning UnifFrictType = 1 Calibrationfactor Momentumequations c 1.0 Q1 Q2 Q3
  31. 31. Calibration factor Smooth transition: morphological applications Longitudinal direction c constant linear
  32. 32. Discharge Eijsden 2018
  33. 33. Calibration • 25 Calibration reaches • 5 Discharge levels • 4 Model schematisations • Procedure with OpenDA Randvoorwaarden Afvoerniveaus in de kalibratiefactor Laag (L) 100 m 3 /s Midden1 (M1) 800 m 3 /s Midden2 (M2) 1700 m 3 /s Hoog1 (H1) 2300 m 3 /s Hoog2 (H2) 2700 m 3 /s 01-11-1993 – 01-02-1994 (V) (V) (V) V V 01-12-1994 – 01-03-1995 (V) (V) V K 01-11-2010 – 01-02-2011 (V) (V) K K 01-07-2014 – 01-07-2015 K V K V
  34. 34. Questions?

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