TUFLOW 2D/3D Flexible Mesh Modelling

From the deep ocean to laboratory flumes, TUFLOW's flexible mesh engine TUFLOW FV covers all bases including sediment, morphology, water quality and particle tracking simulation.

TUFLOW Flexible Mesh

Our flagship 2D/3D flexible mesh solver, TUFLOW FV, permits use of freely oriented triangular and quadrilateral elements to simulate environmental flows, breaking the shackles of fixed grid modelling. TUFLOW FV allows models to conform to nature's shapes, rather than artificially forcing nature to fit a fixed grid solution. 

TUFLOW's flexible mesh solver, together with its suite of environmental modules - including advection dispersion, sediment transport (with morphological update), water quality and particle tracking - provides the power needed to tackle the most challenging environmental modelling problems from oceans to urban lakes.

Key Features

Model in 3D

Excellent capture of sharp density gradients, supported by access to a variety of vertical turbulence schemes, allows for modelling of complex 3D flow fields in stratified systems

GPU Speed

TUFLOW's flexible mesh solver is optimised for multiple CPU simulation, and can also harness the power of GPU compute to deliver game-changing speed increases to environmental modelling projects

Powerful Modules

Tackle the most complex environmental problems with our range of seamlessly integrated TUFLOW modules, including 2D or 3D advection dispersion, suspended and bedload sediment transport and morphology, water quality and particle tracking


Model with confidence. Developed and refined over more than 30 years, TUFLOW's solvers are world class

Wave Model Integration

Integrate waves into hydrodynamic simulations by coupling TUFLOW with the SWAN spectral wave model

Great Value

Licences packed full of functionality at a competitive price. Significant discounts are available for multiple licences

World Leading 3D Hydrodynamic Solver

TUFLOW FV delivers world-class 2D and 3D hydrodynamic modelling that includes:

  • Simulation of vertical and horizontal density gradients due to salinity, temperature, and sediment
  • Atmospheric heat exchange, with density effects
  • Customisable first or second order numerical schemes
  • A choice of turbulence closure schemes
  • Coupling with wind fields and wave stresses
  • Dynamic morphological updating
  • Interfacing with three dimensional nearfield CFD predictions

The Power of Flexible Meshes

TUFLOW's flexible mesh means that constraints of fixed grid models - such as long run times due to unwanted spatial resolution - are a thing of the past. TUFLOW's flexible mesh allows unrestricted use and orientation of quadrilateral and triangular cell sizes within a model domain so that spatial resolution can be varied across a model at will. This means:

  • Finer resolution can be applied in areas of interest without incurring a numerical penalty elsewhere 
  • Models can match nature's curves and complexities with ease
  • More efficient model execution

In short, this flexible mesh approach means faster run times and less memory use, and ultimately, faster project delivery.



Optimised CPU and GPU Acceleration

TUFLOW FV is optimised for parallel CPU and Cloud compute, on Windows and Linux platforms. This offers the flexibility needed to efficiently execute complex environmental modelling projects.

In addition, TUFLOW's flexible mesh model is executable on GPU, either locally or in the Cloud. Testing has shown that TUFLOW's GPU acceleration provides speed gains of up to 40 times over traditional single core CPU implementations.

This acceleration is a game-changer for environmental modelling: simulations that previously took days of elapsed time can now be executed in a matter of hours.

Versatile Environmental Toolbox

TUFLOW FV isn't just a great hydrodynamic solver, it also includes all the environmental modelling add-ons needed to tackle the most challenging estuarine and coastal modelling studies. These include:

In addition, a wealth of Python and MATLAB tools and GIS plugins are available to make modelling with TUFLOW FV satisfying and rewarding.

Accurate across all Scales

With its flexible mesh approach, TUFLOW FV is able to easily simulate fluid mechanics across a wide range of physical scales, from metres all the way up to hundreds of kilometres in the open ocean. Some applications of TUFLOW, such as port dredge plume assessments, encompass this entire range of scales in a single model, and do so with ease.

Other applications of TUFLOW that have successfully exploited this ability include simulation of sinuous estuaries that discharge to the open ocean, water supply reservoirs that need detailed resolution only around destratification structures, and open ocean outfall assessments. 

Unrivaled Flexibility

TUFLOW's flexible mesh solver can be integrated within Graphical User Interfaces such as Aquaveo's SMS, or Geographical Information Systems such as ArcGIS/ArcPro, MapInfo and QGIS.  This allows TUFLOW to blend with existing user workflows, and also means that licence costs are kept down: users are purchasing world class engines that can be used seamlessly with specialist visualisation packages.

Simulation output formats are selectable to match these platforms and can be easily and efficiently post-processed using Python or MATLAB to meet project or user needs.