FME Usage in Dynamic Flood Calculations
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FME Usage in Dynamic Flood Calculations

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When performing fully dynamic 1D + 2D flood calculation, digital terrain models and result processing is essential. This presentation will desrcibe how FME can be used to manipulate digital terrain ...

When performing fully dynamic 1D + 2D flood calculation, digital terrain models and result processing is essential. This presentation will desrcibe how FME can be used to manipulate digital terrain models and postprocess flood results.

See more presentations from the FME User Conference 2014 at: www.safe.com/fmeuc

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FME Usage in Dynamic Flood Calculations FME Usage in Dynamic Flood Calculations Presentation Transcript

  • CONNECT. TRANSFORM. AUTOMATE. FME Usage In Dynamic Flood Calculation Henrik Thorén Civilengineer, Hydraulic Specialist
  • Rambøll !  Engineering consultancy company !  Around 10 000 employees worldwide !  Originates from Denmark !  Denmark, Sweden, Norway, Finland and United Kingdom !  About 200 offices in 20 countries C Bella Sky Hotel Rambøll Head Office Femer Bælt Tunnel
  • Henrik Thorén !  Sweden !  Climate Adaption and Storm Water Management !  Dynamic flood mapping with DHI software (Danish Hydrology Institute) !  MIKE Urban, MIKE 11 and MIKE 21 !  2-way and 3-way coupling (MIKE Flood) !  FME and ArcGIS !  Hydro model for Gothenburg
  • !  Manipulation of DTM !  Post Process flood results Agenda
  • Manipulate DTM !  In a DTM, buildings are “cut” away and a flat surface is interpolated over the area that the house covers !  In flood calculation, buildings are structures that will redirect the flow of the water, thus buildings have to be projected in the DTM
  • Manipulation of DTM C Before AfterDTM with shape file
  • Principal solution - I Input Shapes Clipper Inside Clipper OutsideInput Raster Clipper Transformer RasterCell Replacer Change value to 5 RasterCellValue Calcualtor Operator + 5 5 5 DTM + 5
  • Principal solution - II RasterMosaicker RasterCellValue Calcualtor Operator + Clipper Outside DTM + 5
  • FME solution
  • Post process flood results !  The main purpose is to calculate the volume of the flooded water and the flooded area !  As a bonus, this can be done for each “flood island” or to a specific area. !  The workspace can analyse multiple flood results independently in the same workspace C
  • Principal solution - I Raster Flood Result Shape file with flood islands Excel file with statistics Input Output
  • Principal solution - II Raster Flood Result RasterCell Coercer RasterExtents Coercer - Data Extents PointOnArea Overlayer - Count overlaps - Create a list of the flood depth in each point Count List
  • Principal solution - III PointOnArea Overlayer Count List PythonCaller + AttributeCreator - Calculate the total flooded area and volume of the flooded water Shape file Excel file
  • FME solution - I
  • FME solution - II
  • !  Statistics in excel format that can be presented in diagrams Results 0 500000 1000000 1500000 2000000 2500000 3000000 B_Å1_MQ2100_2 6t_S B_Å1_HQ2100_2 6t_S B_Å1_MQ2100_1 0t_S B_Å1_HQ2100_1 0t_S B_Å1_MQ2100_1 0t_Ö B_Å1_HQ2100_1 0t_Ö B_Å1_HQ2100_2 6t_S_P26 B_Å2_MQ2100_2 6t_S B_Å2_HQ2100_2 6t_S B_Å2_MQ2100_1 0t_S B_Å2_HQ2100_1 0t_S Area(m2)/Volym(m3) Scenario Översvämmad yta (m2) Volym av översvämmat vatten (m3)
  • Thank You! !  Questions? !  For more information: !  Henrik Thorén, hent@ramboll.com !  Rambøll !  www.ramboll.com !  www.ramboll.com/worldwide CONNECT. TRANSFORM. AUTOMATE.