TUFLOW FV
Halcrow is the sole UK based agents for BMT WBM’s TUFLOW software. By purchasing TUFLOW from Halcrow, users benefit from having access to Halcrow’s UK based support team, in addition to the services provided by BMT WBM – all at no extra cost!
TUFLOW FV is a flexible mesh finite volume numerical model that simulates hydrodynamic, sediment transport and water quality processes in oceans, coastal waters, estuaries and rivers.
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.
TUFLOW FV Modules
Advection Dispersion
The advection dispersion (AD) module simulates the advection and dispersion of conservative constituents in the water column. It has the following features:
- Drivers are the TUFLOW FV hydrodynamic field (2D or 3D)
- Essentially unlimited number of AD parameters/constituents
- Option to apply decay rates
- Inclusion of heat budget and atmospheric exchange routines for detailed temperature modelling
- For the 3D module, inclusion of baroclinic effects due to variations in salinity, temperature and suspended sediment concentrations
Sediment Transport
The ST module simulates sediment transport processes, including:
- Sediment transport in the water column through vertical mixing, horizontal advection and diffusion
- Sediment exchange with the bed through settling and re-suspension
- Tracking of multiple sediment fractions
- Morphology evolution feedback into hydrodynamics
- Special routines to simulate dredge plume generation
Applications include
- coastal and nearshore environments
- beaches and coastlines
- floodplains
- estuarine and coastal tidal hydraulics.
Benefits of using ISIS-TUFLOW
- robust and rapid wetting and drying
- superior 1D and 2D linking options
- multiple 2D domains of any orientations and cell sizes
- 2D representation of hydraulic structures
- automatic flow regime switching over levees and embankments
- 1D and 2D supercritical flow and weir flow
- flexible and effective data management
- constructs models from layers of GIS data
- quality control outputs
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