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

• Time varying bathymetry ticket:191

• Validation for wave setup on planar beach (UQ interested in looking at this)

• Culverts: ticket:145

• 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)