To enable more detailed analysis of the results obtained from 2D water and sediment modeling and to perform post-processing, a tool named Post Processor has been developed. This tool reads the Runfile.hsr file generated by the Simulator tool and converts the results into raster files, which are then displayed on the map. The Post Processor can generate results both after the simulation is completed and during simulation progress.
In 2D Hydraulic Simulation Run File section, the Runfile.hsr generated by the Simulator tool is loaded.
Note: If you access this tool via the PostProcess Results option while the simulation is running, the Runfile will be automatically loaded.
Film Rolls #
The simulation results recorded at different time of simulation are displayed in the table on the right side of the tool.
You can use the Frame Step option to change the output time step for post-processing results.
If the simulation is still in progress and not yet completed, you can update and retrieve the most recent results by right-clicking on the table and selecting Reload Runfile. This will load the latest recorded results from the simulation.
By right-clicking on Save Simulation As…, the following window will appear, allowing you to save the current simulation to a different location.
This tool is useful for making temporary simulations permanent.
In this window:
- Under Selected Path, choose the destination folder for saving the simulation files.
- In Simulation Folder Name, enter a name for the simulation folder.
- If you enable the Save PostProcess Folder option, all extracted and post-processed results generated by the Post Processor will also be copied to the target folder.
- Click Save to complete the saving process.
Available Outputs #
You can extract and generate the following outputs from the 2D simulation results:
- Flow Depth
- Water Surface Elevation
- Flow Direction
(This map displays flow direction in degrees, ranging from 0 to 360.) - Manning Roughness
- Volume Lost
- Sediment Lost
- Flow Velocity – Magnitude
(The magnitude of flow velocity.) - Flow Velocity in X Direction
(The velocity vector component in the X direction. Positive values indicate flow to the right; negative values indicate flow to the left.) - Flow Velocity in Y Direction
(The velocity vector component in the Y direction. Positive values indicate flow downward; negative values indicate flow upward.) - Flow Discharge – Magnitude
(The magnitude of flow discharge per unit width.) - Flow Discharge in X Direction
(The discharge vector per unit width in the X direction. Positive values indicate flow to the right; negative values indicate flow to the left.) - Flow Discharge in Y Direction
(The discharge vector per unit width in the Y direction. Positive values indicate flow downward; negative values indicate flow upward.)
If the simulation includes Rain on Grid:
- Cumulative Precipitation Depth
(Total precipitation during the simulation, in millimeters.) - Cumulative Infiltration Depth
(Total water infiltrated into the soil, in millimeters.)
If Movable Bed is activated :
- Total Bed Changes
(Map of bed elevation changes. Negative values indicate erosion; positive values represent deposition including currently moving sediment.) - Scour
(Map of eroded bed material.) - Deposition
(Map of deposited material including currently moving sediment.) - Digital Elevation Map
- Hillshade
- Total Load
(Map of sediment transport rate per unit width, in kilograms per second per meter.) - Sediment Concentration
(Map of suspended sediment concentration, in kilograms per cubic meter.)
By right-clicking on one of the outputs and selecting Add to Layers, you can automatically add the selected output to the Time-Series Layer and review the changes sequentially in an animated manner.
The selected layer will be marked with the 🎞️ icon.
Output Settings #
In the Output section, you can configure the necessary settings for post-processing the simulation results.
- Flow Depth Tolerance: Use this option to define the minimum acceptable flow depth. Any flow depth values smaller than this threshold will be replaced with zero.
- Resampling Method: If Subgrid Variability methods were used in the simulation, this option allows you to choose the interpolation method and define how maps such as water surface elevation, flow depth, flow velocity, etc., should be generated based on the simulation data.
- Computation Cells: When enabled, the tool will generate a Shapefile showing the computational cells used in the simulation alongside the requested outputs.
- IC Cells: When enabled, the tool will display the cells that were defined as internal flow inputs under the Internal Conditions section, alongside the requested outputs.
- EC Cells: When enabled, the tool will display the cells that were defined as boundary conditions under the External Conditions section, alongside the requested outputs.
- Output Directory: This option allows you to switch between saving outputs temporarily or permanently. You can also create a new folder for generated results and organize outputs in different directories.
- Overwrite: By enabling the Overwrite option, you allow the newly generated results to replace any existing files in the selected output folder.
Please note: If the selected outputs already exist in the folder and this option is not enabled, those outputs will not be regenerated. To ensure that the results are recalculated and generated based on the updated settings, the Overwrite option must be enabled. - Output Format: Use this option to choose the format of the output files.
Tip:- GeoTIFF: Faster to generate and save, but files are larger.
- GeoPackage: Slower to generate and save, but results in smaller, more compressed files.
- Adjust Origin: When enabled, any extra cells around the raster edges will be removed.
- Add to Layers: Indicates which output will be automatically added to the Time-Series Layer.
- Resample: This option allows you to interpolate the simulation outputs and increase the resolution of the results. It is particularly useful for post-processing simulations done with Classic Mesh, enhancing the accuracy of outputs and aligning them better with high-resolution topographic maps.
To use this feature, select a higher-resolution topographic map in the Output Resolution DEM field, and define the interpolation and resampling method in this section.
