An integrated software solution for simulating flows in rivers, in channels and on floodplains
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 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 |
| Accommodates multiple mesh types in same model These include triangular unstructured mesh (for analysis of complex flood flows), quadrangular unstructured mesh (which is suited to channelled flows), and multiblock rectangular mesh (for simpler flow patterns) |
| 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 |