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.

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. Content
• About the project
• Data management
• Grids
• Calibration

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. 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. 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. Baseline: Geographical database
Bed levels

7. Baseline: Geographical database
Bed levels
Bed levels as 1D lines

8. Baseline: Geographical database
Bed levels
Bed levels as 1D lines
Land usage

9. Baseline: Geographical database
Bed levels
Bed levels as 1D lines
Land usage
Locations

10. Baseline: Variant-measure workflow
Reproducible workflow:
Measures as building blocks to change variants
Variant Measure

11. Discharge Eijsden
2018

12. Changes to the system
Ecology (embankments)Protection for high water Ecology (embankments)

13. Baseline schematisations
1995 2010 2014 2018

14. Baseline schematisations
1995 2010 2014 2018

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. Curvilinear to flexible
Curvilinear grid Flexible mesh

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. Grid generation (Negenoord)

19. Grid generation (Elsloo, Meers)

20. Grid at bifurcation (Pannerdensche Kop)

21. Grid for the future (Maasband)
Current situation Future situation

22. Where Meuse and Rhine Meet

23. Grid cell shapes

24. Timestep per cell
250 m3/s 2260 m3/s 3430 m3/s
Δ𝑡 ≤
Δ𝑥 ⋅ 𝐶𝐹𝐿
𝑢
Courant criterium:

25. Timestep validation
Courant limiting cells worth optimising

26. Statistics: Orthogonality
Soft goal: < 0.02
Hard goal: < 0.10
Computational requirement: < 0.50

27. Statistics: Smoothness
Soft goal: Smooth look
Computational requirement: -

28. Base roughness main channel
North SeaBelgium
Alluvial riverGravel

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. 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. Calibration factor
Smooth transition:
morphological applications
Longitudinal direction
c constant
linear

32. Discharge Eijsden
2018

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. Questions?