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OpenMI Life Demonstration case “Scheldt”

OpenMI Life Demonstration case “Scheldt”. Use case “Linking sewer flow to river flow”. Sewer case. Sewer model (InfoWorks CS) Drainage area of Leuven (approx. 110000 PE, 120 km 2 ). Leuven model characteristics. Approx. 10000 nodes > 100 outfalls / CSOs Open and culverted sections

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OpenMI Life Demonstration case “Scheldt”

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  1. OpenMI LifeDemonstration case “Scheldt” Use case “Linking sewer flow to river flow” OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  2. Sewer case • Sewer model (InfoWorks CS) • Drainage area of Leuven (approx. 110000 PE, 120 km2) OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  3. Leuven model characteristics • Approx. 10000 nodes • > 100 outfalls / CSOs • Open and culverted sections • Main river (Dijle), larger tributaries, smaller (unmodelled) ditches • Many outfalls unprotected to reverse flows • River sections currently incorporated in sewer model (to be removed) • Model spreads accross 4 main “valleys” • Dijle, Voer, Molenbeek, Abdijbeek OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  4. River case • River model (InfoWorks RS) • Non-tidal part of Dijle river basin (approx. 900 km2) • Model size: 105 km river OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  5. River Dijle characteristics • Dijle flows through city centre of Leuven, splits in 5 branches: • Intense contact with sewer system • More inflow from sewers than natural runoff • OpenMI important for model of Dijle in Leuven OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  6. Linkage description • Quantity links (@ outfalls, CSOs) • Flows from sewer to river • Levels from river to sewer • Flows from river to sewer • Model concept links • Streamlining hydrology of the two models • PDM vs. sewer subcatchments • Flood calculations • Flood cones vs. 2D-flood modelling OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  7. Challenges - pitfalls • Unravelling the overlaps in hydrology • Linking reverse flows – unstabilities • Combinations of open and predefined boundaries • Initialisation • How to include interactions during PDM calibration ? • Selection of rainfall events - dry weather simulations OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

  8. System requirements • Performance • Stand alone simulation times • Sewer model : 1month ~ 6 h simulation • River model :1 month ~ 3 h simulation • Remote linking - licenses • Expect to have a practicable solution by the end of the project • Give priority in OMAssoc. Techn.Comm. OpenMI Life Kick-off meeting - October 3-5, 2006 - Aalst (BE)

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