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Dynamic Links

TUFLOW’s 2D and 1D solution schemes are designed to be dynamically linked with other schemes. The external scheme is set up to access the TUFLOW_LINK.dll so that TUFLOW and the external scheme share memory and linking routines to maximise speed of data transfer and computations. The linkages are simply set via snapped objects in one or or more GIS layers, or the Graphical User Interface. The external schemes also utilises TUFLOW’s features for displaying 1D and 2D output merged as one.

Established links have been developed with Flood Modeller and XPSWMM.

The ever popular TUFLOW link is a dynamic link between Flood Modeller Pro and TUFLOW, including its one-dimensional component; ESTRY. It allows information, such as flow and water levels to be exchanged between the models, providing the user with much greater flexibility in producing an integrated model. From 2019, with the release of Flood Modeller Pro version 4.5, there is now a full linkage between Flood Modeller Pro, ESTRY and TUFLOW HPC allowing significantly shorter simulation times and improved model stability.

The TUFLOW link combines the complementary strengths of Flood Modeller Pro, such as one-dimensional (1D) open channel flow, a wide range of structures and complex operating rules alongside TUFLOW’s two-dimensional (2D) domains.

Existing standalone Flood Modeller and TUFLOW models can be linked together with minimal effort, making use of concepts already familiar to the modeller. Flood Modeller can be linked to TUFLOW via HX and SX boundaries so that level or flow information can be exchanged between the two models.

The exchange can be driven by either component, therefore Flood Modeller calculates water level; TUFLOW calculates discharge or Flood Modeller calculates discharge; TUFLOW calculates water level. Exchange of information between the two models will occur at each multiple of the common time step.

The 1D model can also be linked to multiple TUFLOW 2D domains and each 2D domain can have a different time step and resolution. Additionally, the link provides a direct 1D-1D dynamic link between Flood Modeller and ESTRY. This fully combines the complementary strengths of Flood Modeller and TUFLOW’s 1D component, whose additional strengths are in pipe modelling, especially those of small cross-sectional area and conveying low or no flows.

This allows, for example, an ESTRY pipe network to be dynamically linked to Flood Modeller river units, which can all be linked to TUFLOW’s 2D domain(s). This enables an integrated approach to modelling, combining open-channel, closed pipe and overland flow, suitable for modelling flood risk in urban areas, amongst other scenarios.

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