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DSD-INT 2018 Lumbricus casus Coupling iMODFLOW MetaSWAP D-Flow Flexible Mesh - Hummel

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Presentation by Stef Hummel (Deltares) at the iMOD International User Day 2018, during Delft Software Days - Edition 2018. Tuesday 13 November 2018, Delft.

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DSD-INT 2018 Lumbricus casus Coupling iMODFLOW MetaSWAP D-Flow Flexible Mesh - Hummel

  1. 1. i M O D I n t e r n a t i o n a l U s e r D a y Coupling iMODFLOW – MetaSWAP – D-Flow Flexible Mesh Stef Hummel
  2. 2. iMODInternationalUserDay 2 Integrated modelling: open water/unsaturated zone/groundwater Partners: Water authority Aa en Maas, Water authority Limburg, Deltares, Alterra. ‘Proeftuin Zuid’: ‘De Raam’, Waterschap Aa en Maas. Development of an integrated modelling tool. Application to the catchment De Raam Part of the Dutch program https://www.programmalumbricus.nl
  3. 3. Integrated modelling: open water/unsaturated zone/groundwater • Involved models: • D-Flow FM (Delft3D Flexible Mesh) Open water, 1D and 2D (channels and overland flow) Deltares • MetaSWAP Unsaturated zone Alterra • iMODFLOW Groundwater USGS/Deltares iMODInternationalUserDay 3 • ‘Driver’ Data exchange after each model time step. Derived from the driver for NHI. (Nationaal Hydrological Instrumentatium) Driver MetaSWAP - lib iMODFLOW - lib D-Flow FM - DLL
  4. 4. Data exchange, variables (1) iMODInternationalUserDay 4 Determined by iMODFLOW Determined by MetaSWAP determined by D-Flow FM
  5. 5. Data exchange, variables (2) iMODInternationalUserDay 5 iMODFLOW Ponding volume MetaSWAP D-Flow FM Flux between saturated and unsaturated zone Water level 1D-channels Groundwater level Water level at ground level Phreatic storage Drainage (drains) Irrigation demand Realized irrigation Drainage and infiltration (1D-channels) Irrigation demand Realized irrigation Precipitation Evaporation
  6. 6. Data exchange, locations (1) iMODInternationalUserDay 6 iMODFLOW/MetaSWAP-gridcel (MetaSWAP-SVAT on top of MODFLOW column) MetaSWAP-SVAT iMODFLOW column iMODFLOW column with River-element on top D-Flow FM gridpoint (‘node’) D-Flow FM 1D link Mapping of water levels (n:1) from D-Flow FM nodes to iMODFLOW river cell node to river cell mapping
  7. 7. Data exchange, locations (2) iMODInternationalUserDay 7 iMODFLOW/MetaSWAP-gridcel (MetaSWAP-SVAT on top of MODFLOW column) MetaSWAP-SVAT iMODFLOW column iMODFLOW column with River-element on top D-Flow FM gridpoint (‘node’) D-Flow FM 1D link Mapping fluxes (n:1) from iMODFLOW river cells to D-Flow FM nodes (n:1) river cell to node mapping
  8. 8. Data exchange, time stepping iMODInternationalUserDay 8 V1D iMODFLOW MetaSWAP D-Flow FM T=t T=t+1V1D h2D hmf h1D,t BnB1 A1 Cn C V'ber,tot=Vber,Σ1:n qozvz Bfrea Requested flux Realized flux
  9. 9. Test case: Hoge Raam (1) iMODInternationalUserDay 9 SOBEK 2 model
  10. 10. Test case: Hoge Raam (2) iMODInternationalUserDay 10 iMOD Delft3D Suite SOBEK 2 model D-Flow FM model Mappings D-Flow FM  iMODFLOW MetaSWAP
  11. 11. Test case: Hoge Raam (3) • Status: • All components have been developed • The software has been tested and validated on a small test model • Handling predicted versus realized infiltrations works fine • The model setup for the Hoge Raam has been completed iMODInternationalUserDay 11 • Next steps: • Validate the results for the Hoge Raam model • Plan actions to be taken for providing an operational end user version
  12. 12. terug  sluiten  i M O D I n t e r n a t i o n a l U s e r D a y 12 Thanks for your attention

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