network simplification
Download
Skip this Video
Download Presentation
Network simplification

Loading in 2 Seconds...

play fullscreen
1 / 6

Network simplification - PowerPoint PPT Presentation


  • 75 Views
  • Uploaded on

1D/1D dual-drainage simulation. Network simplification. DEMs and Urban Flood Modelling. Dual-drainage concept (1D/1D and 1D/2D) Sewer system (manholes and pipes) Overland system (depressions and flow paths). Overland system. 1D overland flow modelling

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Network simplification' - ina


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
dems and urban flood modelling
DEMs and Urban Flood Modelling
  • Dual-drainage concept (1D/1D and 1D/2D)
    • Sewer system (manholes and pipes)
    • Overland system (depressions and flow paths)
overland system
Overland system
  • 1D overland flow modelling
  • Overland system consists of nodes (ponds) andlinks (flow paths), generated using DEM.
  • 2D overland flow modelling
  • Surface divided into small elements (squares orirregular triangles), the flow equations (St. Venant) are based on terrain characteristics derived from the DEM.
network simplification strategies
Network simplification strategies
  • Pruning: <10m; <300mm
  • Merging: similar hydraulic capacity - difference in dimension of consecutive links <100mm
  • First strategy
    • Simplifications are applied to the sewer network and the overland network simultaneously (1D/1D model)
  • Second strategy
    • Simplifications are applied first to the sewer network and then to the 1D/1D model network, i.e. including the overland flow network
ad