-
Documentation
-
About
- Getting Started & Use Cases
- Support
-
What's New
- National French high-resolution land cover map
- Work with multiple features simultaneously in the canvas
- Spill points on flash flood map and depression map
- New surface roughness (Manning) parameters for DynamicFlood
- Workspace and Modelspace sharing updates
- Regionally varying rain in DynamicFlood Sweden
- Veden imeytyminen nyt osana rankkasadeanalyysejä
- Use Scalgo Live anywhere in the world
- DynamicFlood: Live model speed info and regionally-varying rain events
- Sea-level rise: Download building flooding information
- Detailed contour maps and editable buildings in Workspaces
- New in Modelspaces: Explore hydrodynamic simulations and visualise the dynamics of flow velocity
- National German high-resolution land cover map
- Specify basins and protrusions by drawing their outer boundary
- Simplified path features
- National Norwegian high-resolution land cover map
- Organise and communicate on a digital canvas
- New sidebar to help organize your analyses and queries
- Sliding contours
- Ny skyfallsanalys och en ännu bättre marktäckekarta
- New land cover map for Finland
- Depths in the depression map
- New Danish land cover map with more classes
- National Swedish High-Resolution Impervious Surface Mapping
- Watershed tool updated with even better descriptions of catchment characteristics
- National Flash Flood Map with Infiltration and Drainage for Denmark
- Add your own WMS layers to SCALGO Live
- Enriched building data in Denmark
- National hydrological corrections and Land Cover for Poland
- National hydrological corrections for Norway
- Updated Impervious Surface Mapping for Denmark
- National hydrological corrections and updated local data for Finland
- Fast and intuitive tools to work with infiltration and land use
- Improvements to vector imports and exports
- National Danish groundwater model
- New Sweden high-resolution model
- New powerful depression map and more analyses visualization options
- Introducing Modelspaces: Get your hydrodynamic models into SCALGO Live
- Use case videos
- Access a EA flood maps inside SCALGO Live
- Improved map export
- New powerful ways to edit the elevation model
- Better coloring of flooding layers and sea-level depth filtering
- National Danish High-Resolution Impervious Surface Mapping
- National access for local and regional organizations
- Simpler, more powerful downloads
- Customize Layer Transparency
- Hydrological corrections and new data in Sweden
- Improved export functionality
- Access a wide range of authorative data inside SCALGO Live
- Importing VASP data
- Measure gradients, undo edits, and Norway updates
- New terrain edit features, soil balance information and much more...
- Browse historical orthophotos in SCALGO Live
- Emergency planning with sea-level rise from national forecast data
- Detailed information about watershed composition
- Better styling of imported vector layers
- New Danish Elevation Model
- Work with gradients in the profile widget
- Flood risk screening from rivers and flow paths
- New workspace tool: Raise and lower terrain uniformly
- Importing LandXML TINs, LAS point clouds
- New model in Sweden
- Side slopes on workspace features
- Drag and drop enhancements
- Swedish contour maps
- Subsurface basins and sewage drains in workspaces
- New Interface
- Volume information for watersheds and flow paths
- New powerful tool for emergency response and coastal flood prevention
- Denmark: New flash flood map
- Sweden: Geodatasamverkan setting for Swedish users
- Import custom terrain models
- New Hydrological Corrections
- Elevation contours now available
- Download orthophotos as JPEG and PNG
- Subsurface structures in workspace
- Sea-levels in terrain profiles
- Updated orthophotos
- Models and analysis update
- User interface updates
- User interface updates
- GeoDanmark/FOT data, Matrikelkortet now available
- New flash flood map
- Download of risk polygons
- Updated orthophotos
- Nationwide hydrology on the new DHM/2015 model now available
- New flash flood map computation available with watershed download
- DHM/2015 variants and sea-levels now available nationwide
- DHM/2015 now available nationwide
- Hydrology on the new DHM/2015 model now available
- New DHM/2015 Model - now with buildings
- New DHM Model
- Watershed Tool
- Ad hoc layers
- Nationwide contour maps for all countries
- Single Sign-On
- Data fees
- User Interface
- Canvas
- Analysis
- Workspaces
- Core+ DynamicFlood
- Core+ NatureInsight
- Streams and Flow
- Modelspaces
- Physical Properties
- Country Specific
-
About
Core+ DynamicFlood – Introduction
You can run hydrodynamic 2-dimensional surface flow simulations from SCALGO Live using Core+ DynamicFlood. You can initiate a simulation from a workspace, and the results are delivered as a modelspace where you can easily explore, download and share the output.
Note that we have not yet released the add-on module in all countries, please contact us if you have questions about availability.
Initiating a hydrodynamic simulation
When you want to run a hydrodynamic 2D simulation of surface water flows in a workspace, you go to the pane “More” in the workspace toolbox and press “Run hydrodynamic engine…”
This opens a new window with options regarding the rain input to the simulation. By clicking the eye icon over each rain event, information is shown in a side video, where the rain event can be edited and saved as a new rain event on the workspace.
You can add your own rain events through the “+” icon next to the list of rain events. In some countries, clicking the “+” icon will also allow you to switch the default rain events over to those belonging to another nearby region. Your organization administrator can configure a different set of default rain events that replace the ones provided by SCALGO.
Furthermore, by clicking on the cogwheel, you can specify the simulation's resolution as well as the length of the time step for saving results (this does not influence the simulation time step) and the total length of the simulation.
By default, the simulation will run in the same resolution as the workspace, but it is possible to select a coarser resolution. The full-resolution elevation data is still used to a certain degree in the model thanks to TUFLOW's Sub-Grid Sampling feature, but the simulation will happen on a coarser grid, which greatly speeds up the simulation. The TUFLOW manual contains more information about Sub-Grid Sampling (SGS) in Section 7.4.3. The modelspace contains the elevation layer and output layers in the selected resolution.
Progress information
While DynamicFlood computations are running, a single progress bar is shown to indicate how far the currently-running computation has progressed, and the progress bar can be expanded to view the queue of simulations currently waiting to run in your organization.
Note that your hydrodynamic computations take a great deal longer than regular workspace computations and that other users in your organization might be using all your available GPU/TUFLOW resources in SCALGO Live. In such case, your job will be automatically queued and started when the resources become available. If you want to cancel the running command, you can do that from this progress bar. Note that you can only cancel jobs started by yourself.
When you expand the progress bar, the status of individual rain events that are being simulated is shown. The queue shows both your own and your colleagues' simulations, each showing the name of the workspace, the model's resolution and area, and the number of rain events in the simulation. If your organization has a shared GPU license, your job may be queued while a user in another organization is running. In this case, the queue merely displays a placeholder indicating this situation and does not display any details of the other organization’s simulation.
For your own simulations, you can move the mouse cursor over each rain event to see the current progress in percent, the approximate remaining runtime and whether the current timestep of the model is considered slow or not.
Under normal circumstances, the progress bar is green for each rain event. If the model is slow, meaning that the timesteps are below an acceptable threshold, the progress bar becomes red, giving a quick indication that the model might take longer than expected.
The acceptable threshold to determine if a model is slow, is the model's resolution in metres divided by 20. This means that for a 1-meter resolution simulation, the model is considered to be slow if the timestep goes below 0.05 seconds.
You can click the rain event's progress bar to bring up the status window, which displays the simulation's current status within that event. The window shows the mass balance, as well as the number of repeated timesteps, which can indicate sudden changes in the model's behavior.
The graph, which shows where in the rain event the simulation is at the moment, can be enriched with additional charts, such as the model's timestep over time and control numbers. There are three different control numbers, Nu, Nc and Nd, that provide insight into various characteristics of the simulations. Expert modellers use these to better understand the factors influencing the model's speed and performance. We refer the mathematically inclined reader to the TUFLOW manual for more information on the three control numbers.
Looking at the result
As explained earlier, the result is delivered as a modelspace. The computation processes your rain events one by one, and they will appear in your modelspace as they are finished. Thus you will be able to see the result from some time steps before the full computation is finished.
If you want a deeper understanding of how we setup the hydrodynamic model you can proceed to the next section of this manual.