- Coastal and nearshore environments
- Beaches and coastlines
- Estuaries, river entrances and deltas
A flexible mesh finite volume numerical model that simulates hydrodynamic, sediment transport and water quality processes in oceans, coastal waters, estuaries and rivers.
Modules available include:
- 2D HD: the standard hydrodynamic engine
- AD: an advection dispersion module
- ST: a mud and sand transport module
- MOR: morphological update module (coming soon)
- Advanced structures for floodplain application
- WQ: water quality processes (in house)
- 3D: all of the above in 3D, with option for automatic 3D/2D transition for floodplain applications
BMT WBM have been using flexible mesh models since the early 1990s and quickly recognised and utilised the benefits of the flexible mesh approach for complex coastal and estuarine modelling studies.
In 2006 we identified the need for a better tool than was currently available in the marketplace. Development of TUFLOW FV commenced and it is now the core modelling tool for coastal and estuarine projects.
TUFLOW FV uses a flexible mesh, consisting of triangular and quadrilateral elements of different size and shape. Compared to a fixed grid approach, this has significant benefits for applications of complex geometry, or sharply varying flow and concentration gradients. The flexible mesh gives the modeller more scope to design a model domain that best suits the problem to be solved.
The finite volume numerical scheme solves the conservative integral form of the non linear shallow water equations (NLSWE). The scheme can also simulate advection and dispersion of multiple scalar constituents. The equations can be solved in 2D (vertically averaged) and 3D, and both 1st and 2nd order solution schemes are available. The solution scheme is explicit and uses a varying Courant dependent timestep.
TUFLOW FV code is optimised and parallelised for multi-processor machines, using the OpenMP implementation of shared memory parallelism. It’s as fast, or faster, than any other comparable model on the market today.
Flexible controls / interfacing:
TUFLOW FV inputs are controlled via a macro style text-file interface. This allows the user to flexibly and efficiently control model configuration, boundary condition specification and output requirements.
- Fully open (non-reflective)
- Specified water level
- Specified discharge
- Global cell inflows and outflows (e.g. rainfall, evaporation)
- Cell inflows/outflows (e.g. pollutant source/sinks)
- Wind stress
- Atmospheric pressure
- Wave radiation stress
- Holland parametric cyclone wind and pressure model
- Various gridded forcing (e.g. spatially and temporally varying wind, wave, etc)
- A generic 2D structure routine (across 1 or more cell faces)
- 2D and 3D base models
- Advection Dispersion (with heat exchange)
- Cohesive and non cohesive sediment transport module (with morphological update)