An integrated software solution for simulating flows in rivers, in channels and on floodplains

InfoWorks 2D

InfoWorks 2D facilitates fast, accurate and detailed surface flood modeling.

Two-dimensional (2D) simulation is better suited than one-dimensional simulation (1D) for modeling flows through complex geometries (such as developed floodplains, urban streets and buildings, road intersections and other transport infrastructure), and open ground, where either source or direction of flow is problematic to assume. In urban areas the situation is exacerbated further by the presence of flood defence works specifically design to deflect of divert flows during flood events.

Modeling such complex flow scenarios both accurately and efficiently requires a model with both 1D and 2D engines.

InfoWorks 2D combines a number of distinctive features:

  • Analysis and prediction of potential flood extent, depth and velocity
  • Comprehensive functionality to completely model the interaction of surface flows with floodplain structures e.g. culverts and flapped orifices
  • Fully integrated 1D and 2D modeling environments
  • Multiple surface mesh design optimizes modeling flexibility and accuracy
  • Multiple results views, both static and animated

InfoWorks 2D is available as a fully-integrated module within InfoWorks RS for river and watershed system modeling.

Features & Benefits

Integrated module
Features & Benefits
InfoWorks 2D module is fully integrated with existing 1D simulation engine
Achieves detailed, accurate and efficient modeling of flows through complex geometries, both urban and open ground, including interaction with in-channel flows and structures
Create 2D models within larger 1D model
By using 1D simulation to identify widespread locations of flooding, and 2D to investigate direction and depth of flood flows in specific areas, users can reduce model size and simulation time while improving accuracy of results, thereby improving productivity and reducing costs
Single, integrated model building environment
Efficient model building through a single GUI and ensures realistic connections between 1D & 2D model elements
1D and 2D simulation engines run simultaneously
Allows the exchange of water in between the models at each timestep giving improved accuracy and detail of results
Single, integrated results dataset
Provides ease of data management and consistent analysis and presentation of both 1D & 1D results
All the benefits of an InfoWorks solution
Including standard model building tools, data import, validation, version control, audit trail and results display
2D fluid flow engine
Features & Benefits
Uses 2D finite volume methods to solve the shallow water flow equations
Particularly suitable for rapidly varying flood flows such as those through steep streets and those associated with bank overtopping or breaching
Comprehensive functionality including GIS tools for creation of 2D meshes and fully animated flood maps
No need to purchase additional modules or third-party tools
Shock capturing and super-critical flows
Ideally suited for dam break and embankment breach simulation
Advanced wetting and drying algorithm
Only performs calculations on wet elements, which provides very fast simulation times
Analyses and reports volume conservation
Provide quick and easy verification that no water has been lost due to numerical rounding or exchange between the 1D and 2D zones
Simulation Mesh
Features & Benefits
InfoWorks 2D is based on a triangular unstructured surface mesh
Gives maximum flexibility to the modeller, increases the type of flows that can be modelled and ensures that the system topography is modelled as accurately as possible
Automatic generation of unstructured triangular meshes from within InfoWorks
No need to purchase third party meshing tools
Flexible inbuilt mesh generator
Add definition to most important hydraulic features to improve model accuracy
Variable mesh resolution
Allows users to decrease the triange size in areas of complex geometries or greater interest to provide higher resolution results
Variable mesh roughness
Ensures that the surface roughness used by the engine is representative of differing features and surface cover of the area being modelled
Includes user specified breaklines
Allows users to control the location of the mesh along key features
Mesh voids
Enables users to remove buildings and other areas of no flow from the simulation mesh
Permeable and collapsing walls
Can be used to represent walls and other obstructions to flow (such a dense hedges) that may pass some flow through, be overtopped or collapse mid way through a simulation as a result of hydraulic loads
Results Interpretation
Features & Benefits
InfoWorks 2D produces water levels at the centre of each mesh cell and velocities across each of the cell faces
Improves accuracy and detail of results
Results are fully integrated with 1D engine results
Comprehensive flood modeling achieved within a single solution
Flexible results display
The combined level and results can be viewed as graphs, tables or animated, thematic flood maps with export to GIS if required
Calculation of hazard
Export of maximum flood hazard, calculated from instantaneous levels and velocities
Calculation of the time to first inundation and peak inundation
Export of time to inundation provides important information for emergency planners particularly for dam break scenarios
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