Introduction

TUFLOW is a computational engine that provides two-dimensional (2D) and one- dimensional (1D) solutions of the free-surface flow equations to simulate flood and tidal wave propagation. It is specifically beneficial where the hydrodynamic behaviour in coastal waters, estuaries, rivers, floodplains and urban drainage environments have complex 2D flow patterns that would be awkward to represent using traditional 1D network models.

A powerful feature of TUFLOW is its 2D/1D dynamic linking, first pioneered in 1990, and subsequently enhanced to the point where it offers unparalleled flexibility and robustness.

TUFLOW continues to develop and evolve to meet the challenges of hydrodynamic modelling. Its strengths include:

• rapid and stable wetting and drying;
• 1D and 2D linking;
• multiple 2D domains (optional module);
• both 1D and 2D representation of hydraulic structures;
• automatic upstream/downstream controlled flow regime switching;
• 2D cell sides can wet and dry (excellent for modelling thin barriers);
• 1D and 2D supercritical flow;
• build 1D and 2D model topography using any number of GIS layers;
• highly flexible and efficient data handling;
• GIS based; and
• extensive quality control outputs.

It is suited to modelling flooding in major rivers through to complex overland and piped urban flows, along with estuarine and coastal hydraulics.

Clarence River, NSW. First modelled by TUFLOW 2002.