Hydraulic simulations - PowerPoint PPT Presentation

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Hydraulic simulations

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  1. Hydraulic simulations • Model used • HEC-RAS 4.0b • 1D model • Boundary conditions • Upper: Discharge hydrograph • Lower: Constant sea levels [N60+ 0.50…2.50 m] • Water elevations to Excel (numeric results) and ArcGIS (graphic results) • Output interval: 12 hours (enough?)

  2. Maximum difference: 0.12 m. Luotsimäenhaara Raumanjuopa

  3. Binding RHR and water levels

  4. Flood mapping process

  5. Initial conditions [650 m³/s, 1.50 m] Maximum water level [1243 m³/s, 1.50 m]

  6. Suggestion for output of results • Simulations for discharge-sea level –scenarios • HQ 250, 100, 50, 30 • N60+ 0.5, 1.0, 1.5, 2.0 m • Water levels in main reach cross sections in every 12 hours • Top levels of embankments included in the results • Comments, suggestions? Shall I calculate the rest of the scenariosand deliver the results to VATT?