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DSD-INT 2018 Latest developments in hydrology - hydrodynamic modelling using the Delft3D FM Suite - van Dam

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Presentation by Arthur van Dam (Deltares) 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 hydrology - hydrodynamic modelling using the Delft3D FM Suite - van Dam

  1. 1. Latest developments in hydrology - hydrodynamic modelling using the Delft3D FM Suite Arthur van Dam and Mark Hegnauer
  2. 2. Modelling from catchment to coast 12 November 2018
  3. 3. Extreme weather: time and place matters Evacuating people as the early effects of Hurricane Sandy are felt in the Red Hook neighborhood of Brooklyn (EPA)
  4. 4. Water availability in 2018 12 November 2018
  5. 5. Water availability in 2018 12 November 2018
  6. 6. Water availability in 2018 Precipitation deficit in The Netherlands in 2018 Nationwide average over 13 stations 5% most dry years Median Record year 1976 Year 2018: currently 296 mm
  7. 7. 2018 Innovation projects 4 options for hydrological modelling with Delft3D FM
  8. 8. 0) Distributed hydrology (do it all in the D-Flow FM module) 1) Lumped hydrology: domain coupling with RR 2) Fully distributed with MetaSWAP and MODFLOW 3) Distributed hydrology: vertical coupling with wflow 4) Distributed hydrology: domain coupling with wflow 4 options for hydrological modelling with Delft3D FM 1. 2.3.4.
  9. 9. Option 0: Do it all in the D-Flow FM module Fully distributed: grid covering entire domain, and all interception/evaporation/infiltration/etc. computed by D-Flow FM Movie by Herman Kernkamp
  10. 10. Software development
  11. 11. Option 1: Lumped hydrology: domain coupling with RR 12 November 2018 - RR-unpaved ( id 1) and RR-Sacramento ( id 2) - Coupled to 1D laterals with id 5 and 6 - 1D channel - trapezoidal cross-section - upstream boundary (id 3) Q=1 m3/s - downstream boundary (id 4) h=1m Joint work with Geert Prinsen and Martijn Russcher
  12. 12. Lumped concepts, known from SOBEK RR Coupled with D-Flow FM module (online/in timeloop) Only lumped or semi-distributed modelling, using concepts like Sacramento, HBV, Walrus, polder model with Capsim, HWRW Urban runoff model, SCS, .. Option 1: Lumped hydrology: domain coupling with RR DIMR DIMR-configuratie Lumped concepts Initialize Perform_ Timestep Finalize Set (varId) Get (varId) D-Flow FM (1D-2D-3D) timeloop Initialize Perform_ Timestep Finalize Set (varId) Get (varId)
  13. 13. Option 1: Impact on-line coupling depends on lumped concept - RR-Sacramento: not depending on 1D water level - RR-Unpaved: there is impact of 1D water level - Test using constant water level 0.0 or on-line level from D-Flow FM (1D), approximately 1.0
  14. 14. 12 November 2018 Whole simulation Detail – zoomed in Conclusion: It works! D-Flow FM - RR on-line coupled gives very similar results as SOBEK 1DFLOW - RR combination (but not identical) SOBEK-RR, no on-line coupling SOBEK, on-line 1D level D-Flow FM on-line coupled to RR Option 1: Comparison: Delft3D FM Suite and SOBEK 2 Suite
  15. 15. Option 1: Lumped RR in practice: Westamstel 6 december 2018
  16. 16. 1D surface water 2D surface water 2D unsaturated zone (soil moisture) 2D/3D groundwater Option 2: Fully distributed with MetaSWAP and MODFLOW Detailed coupling “LUMBRICUS” project
  17. 17. 12 November 2018 Option 2: Fully distributed with MetaSWAP and MODFLOW
  18. 18. From: the Lumbricus project Option 2: Fully distributed with MetaSWAP and MODFLOW
  19. 19. Option 3 and 4: Coupling with wflow ▪ Distributed hydrology: vertical coupling with wflow ▪ Distributed hydrology: domain coupling with wflow wflow = An open source hydrological modelling framework Key strengths: ▪ Directly links to available (gridded) datasets ▪ Multiple hydrological concepts included ▪ Open Source – easy to work together / share knowledge ▪ Strongly linked to other products, modules, platforms and tools (e.g. MODFLOW (BMI), Delft-FEWS (wflow-adapter) and OpenDA (BMI)) 12 November 2018 Connectivity via: ▪ BMI ▪ NETCDF-CF ▪ Open standards
  20. 20. Usage of the wflow framework wflow is used by Universities, Research Institutes, Consultants and Governments around the world 12 November 2018 wflow model available
  21. 21. Example projects using wflow ▪ “RWSOS Rivieren” (forecasting Rhine / Meuse flows into The Netherlands) ▪ Indonesia (nation wide water availability) ▪ Sava Flood Forecasting System (forecasting) ▪ Ganga River Basin Model for strategic basin planning (IWRM)
  22. 22. What is wflow? A hydrological modelling framework: ▪ Based on PCRaster / Python framework ▪ Fully distributed hydrological model ▪ Different hydrological concepts available ▪ HBV ▪ SBM ▪ FlexTopo (beta) ▪ W3RA ▪ PCRGLOB-WB ▪ Different modules available: ▪ Routing module ▪ (Simple) reservoirs module ▪ Crop growth module (LINTUL)
  23. 23. Characteristics of the wflow model ▪ Grid based hydrological modelling 12 November 2018 Snowpack simulation in Albania Runoff simulation in France
  24. 24. Goal: ▪ Better description of hydrological processes in Delft3D FM Suite ▪ Sharing code in a hydrological library ▪ Experiment with hydrological modelling on unstructured grids 12 November 2018 Option 3: Distributed hydrology: vertical coupling with wflow wflow wflow framework • Kinematic wave • Sub-surface flow • Reservoir module • … Delft3D FM Suite framework • Dynamic wave • 1D network • 2D grids • … Hydrological lib • Snowmelt • Interception • Evaporation • Infiltration • Percolation • …
  25. 25. Goal: ▪ “From catchment to coast” models ▪ Simulate each process with the right model wflow D-Flow FM Option 4: Distributed hydrology: domain coupling with wflow
  26. 26. More information Open Source Software portal: ▪ https://oss.deltares.nl/web/delft3dfm ▪ https://oss.deltares.nl/web/wflow Online technical documentation wflow: ▪ http://wflow.readthedocs.io/en/latest/ 12 November 2018

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