Rainman (2020)
Rainfall-runoff simulations for heavy rain
The advanced modelling capabilities of Visdom allow the user to track the rainwater all the way: from a raindrop, through interception by vegetation, down to the terrain surface and soil infiltration; through surface runoff into the sewer network and back to the surface via possible overflows. This is enabled by detailed, tightly coupled numerical models with GPU-accelerated, raster-based simulations.

River Floods (2018)
Modelling rivers with versatile boundary setups
In Visdom, historical floods are reconstructed and multiple possible future scenarios are quickly evaluated. River boundary conditions are automatically derived from hydrological input parameters — users only have to select a region of interest. The integrated analysis components compute damage and risk on-the-fly. Interactive tools enable an in-depth visual analysis of the simulation results.

Heavy Rain (2018)
Pluvial flood modelling

Visdom supports the fast simulation of heavy rainfall events, displaying the results on-the-fly in unprecedented 3D visualizations. This video showcases heavy rain scenarios in urban and rural regions. On the basis of high-resolution terrain models, we evaluate the surface run-off and the associated risk at interactive rates.

Designing Long-term Protections (2018)
Drawing retention basins, walls, and co.
Visdom enables the user to test different protection measures to mitigate the adverse effects of extreme weather events. Our decision support concept is based on a simple setup and fast simulation of alternative options. This video demonstrates the basics using the example of protecting a city from possible future river floods. The user draws a combination of a retention basin with mobile walls to minimize the damage to the infrastructure.

Designing Short-term Protections (2018)
Response planning for object protection
Visdom enables the user to test different protection measures to mitigate the adverse effects of extreme weather events. Our decision support concept is based on a simple setup and fast simulation of alternative options. This video demonstrates the basics using the example of designing sandbag barriers to protect the area around a hospital.

Coupled Sewers (2018)
Coupling of underground networks with surface runoff

For a thorough investigation of flood and heavy rain events in urban regions, underground flows must be considered. Visdom comprises a two-way coupling of the surface run-off  simulation with underground pipe networks, allowing for stress-testing the capacities of sewer networks and for evaluating risks associated with sewer failures such as overflow scenarios or pipe clogging.

Protection Failures - Overtopping and Breaches of Mobile Walls (2018)
Modelling flow over abrubt topography

To evaluate the rest risk and to simplify the creation of special protection plans, Visdom supports the modelling of protection failures. This video shows possible failures of mobile walls in the city of Cologne, Germany. The walls can be overtopped if the water level rises above the protection level. A mobile wall breach can develop at any location, e.g., due to the impact of driftwood.

Protection Failures - Evolving Dike Breaks (2018)
Modelling local terrain modifications that change over time

To evaluate the rest risk and to simplify the creation of special protection plans, Visdom supports the modelling of protection failures. This video shows large-scale simulations of dike breaches. The geometry of the dike breach is changing over time.

Modelling Uncertainty with Simulation Ensembles (2018)
Simulate many scenarios to model uncertain events
A deep understanding of uncertainty plays an important role in prediction and risk analysis. Visdom models uncertainty via the concept of simulation ensembles. These are large groups of scenarios corresponding to varying parameter ranges. This video shows how an ensemble simulation is set up and analyzed to study uncertain dike break events.

Tsunamis (2018)
Modelling large wave impacts onto coastal areas

This video shows a simulated tsunami impact on a Chinese city.

Evacuation Scenarios (2018)
Agent-based models for pedestrians

Visdom employs an agent-based simulator to model evacuation scenarios. The concepts for risk analysis and the design of measures are similar to the mechanisms used in the hydrodynamic modelling cases. This video shows the evacuation of an outdoor concert venue and different evacuation scenarios for a large office space.

Vulnerability Visualization (2015)
Object-centered vulnerability to possible flood hazards
This video shows techniques to visualize vulnerability to flood-related hazards focusing on a specific building. Our approach is based on the automatic extraction of relevant information from a large collection of pre-simulated flooding events, called a scenario pool. From this pool, we generate uncertainty-aware visualizations conveying the vulnerability of the building of interest to different kinds of flooding events.

Simulation Technology (2014)
Fast and reliable flood simulation
The Visdom flood decision support is based on an a reliable in-house 2D-flood simulator. By leveraging standard GPUs, we can simulate breach scenarios in seconds, or weeks of large-scale inundation in a matter of hours.

Visdom Mobile (2012)
Decision support on-site using mobile, visual simulation control
This video demonstrates remote decision support using the mobile version of the Visdom client. Through touch-based interaction the user operates a remote simulation and visualization engine and receives results at interactive rates.