Version 5 (modified by anonymous, 17 years ago) (diff)


This is the main page for ANUGA meeting 30th August 2007

Identified strengths

  • Supercritical flow (e.g. over weirs) as well as sub critical flows handled seamlessly
  • Bores handle well due to discontinuities allowed in solution
  • Numerically stable

Identified weaknesses

  • ANUGA is not as fast as some other models (but willing to trade numerical stability for speed). Is comparable with some flood modelling packages.
  • More diagnostics needed, e.g. time series, vector plots, extrema (dynamically store max stage/velocity: ticket:192)
  • Easy way of extracting time series - GA to provide example to Tom of extracting depth/veloctiy at a time step
  • Monitoring the water line (i.e. stage = elevation): ticket:199
  • Information on how sww file has been built not documented well enough
  • Wave attenuation over long distances and coarse grids identified by Will Power (ticket:195)

Emerging opportunities for future work

  • Validation for wave setup on planar beach (UQ interested in looking at this)
  • changing the mesh resolution - specify period of wave etc to work out maximum triangle size (adaptive mesh generation, ocean model from Imperial College) - inter-run adaptive mesh resolution - a better mesh tool - could we view the where the small triangles are? Interact with a GIS tool? By Xmas, Ted will have a nice GUI front end for flood modelling.
  • dynamic roughness - Manning's function - is the coefficient a function of depth?
  • fluid density - picking up debris (mud flow)
  • frequency dispersion
  • kinematic viscosity
  • optimisation; often only a few triangles causing small time steps - can they be dealt with heuristically?
  • subversion - third party contributions, isolate core of ANUGA.
  • applying a hydrograph at an upstream point
  • landslide over time rather than instantaneous (implement as forcing term)
  • randomly generated bathymetry - does is cause instability?
  • harbour seiching (use climate history as forcing function)