Visualize levee breach from water body inside project area use case (Water Overlay): Difference between revisions

From Tygron Support wiki
Jump to navigation Jump to search
(Created page with "In this scenario we want to simulate a levee breach near an adjacent waterbody. ''In this example, the whole waterbody is present in the 3D project.'' This is important to not...")
 
mNo edit summary
Line 1: Line 1:
In this scenario we want to simulate a levee breach near an adjacent waterbody. ''In this example, the whole waterbody is present in the 3D project.'' This is important to notice, to model the correct volume of the waterbody. If your waterbody is too large or your project is smaller, you can model the breach area differently, see therefore the use case below.
When a levee breaks water is free to flow through the breach and onto otherwise dry land. There are multiple ways of simulating a breach in a levee.
In this scenario you would want to have the breach connected to the water body, since we are going to use the water level of the waterbody to determine the flooding.  


In the steps here, the breach area is drawn in the Editor. It is also possible to import a [[GeoJSON]] file with the location of the breach.
This scenario assumes the water body from which water will flow through the levee is located in the project area in its entirety.


{{Editor steps|title= set-up the breach area
==Requirements==
|In the Editor go to GEO Data --> Areas
Before implementing this use-case, make sure you have a [[Basic water model use case (Water Overlay)|basic water model]] set up. For the specified scenario, the [[Flooding_(Overlay)|flooding overlay]] is required.
|Add a new area by clicking in the bottom left corner.
 
|Select the newly created area (named Area) and give it a fitting name on the right
Also ensure the following in your project, if possible:
|Zoom in to the location where you want to have the breach and click on the Adjust area button
* The hydrological system has a SURFACE_LAST_VALUE or WATER_STRESS [[Water Overlay#Result_types|result type]], either as main result or as a child result type.
|Select the location of your breach and click on Apply settings. Make sure the breach is connected to the water body.  
* The simulation is set up to output a reasonable amount of timeframes. For a stabilization case, one timeframe per 12 hours of simulation time is reasonable.
|Go to the tab attributes and set the breach floor attribute by adding the attribute name, value and clicking on save.  
<!--Before implementing this use-case, make sure you also have a dataset containing information on the breach(es) you wish to model.
 
The following data should be prepared. Click on any topic for more information.
 
{|class=wikitable
!Data
!Description
!Alternative/default
|-
|[[Breach (Water Overlay)|Breach]]es
|Breaches define a lowered terrain height, creating a hole through which water can flow
|Breaches are not automatically provided or generated
|}-->
==Steps==
{{Editor steps|title=manually add a breach
|Configure a base hydrological system.
|[[How to add and remove an area|Add a new Area]] to the project.
|Draw the Area in the location where the breach should take place. Make sure it extends all the way from the water to the floodable land.
|Add the [[Breach height (Water Overlay)|breach height] attribute to the Area.
|Ensure the overlay is (re)calculated.
|Inspect the "Surface last value" result overlay.
|Select the "play" option in the overlay's legend. The animation will show the flow of the water from the breach.
}}
}}
<gallery mode=nolines>
<gallery mode=nolines>
File:Create_area.JPG
File:Create_area.JPG
Line 19: Line 40:
</gallery>
</gallery>


{{Editor steps|title= configure the flooding
==Notes==
|Add a [[Flooding_(Overlay)|Flooding Overlay]] and go to the [[Water_Overlay#Configuration_Wizard|Configuration Wizard]] of the Flooding Overlay.
Multiple breaches can be added to the same project.
|In step 2.1 select the attribute that specifies your breach floor so the software knows which area is your breach area.
|Click on ''Next''.
|In the dropdown menu choose the name of your breach area and check if the attributes correspond with what you have set as attributes or change them here.
|In step 2.2 import your water level areas with at least a water level attribute.
|Finish the Wizard and refresh the Overlay.
|After the flooding is calculated, check the [[Water_Overlay#Show_Water_Balance|Water Balance]] to get more insight in your scenario.
}}
<gallery mode=nolines>
</gallery>

Revision as of 11:44, 9 April 2019

When a levee breaks water is free to flow through the breach and onto otherwise dry land. There are multiple ways of simulating a breach in a levee.

This scenario assumes the water body from which water will flow through the levee is located in the project area in its entirety.

Requirements

Before implementing this use-case, make sure you have a basic water model set up. For the specified scenario, the flooding overlay is required.

Also ensure the following in your project, if possible:

  • The hydrological system has a SURFACE_LAST_VALUE or WATER_STRESS result type, either as main result or as a child result type.
  • The simulation is set up to output a reasonable amount of timeframes. For a stabilization case, one timeframe per 12 hours of simulation time is reasonable.

Steps

{{Editor steps|title=manually add a breach |Configure a base hydrological system. |Add a new Area to the project. |Draw the Area in the location where the breach should take place. Make sure it extends all the way from the water to the floodable land. |Add the [[Breach height (Water Overlay)|breach height] attribute to the Area. |Ensure the overlay is (re)calculated. |Inspect the "Surface last value" result overlay. |Select the "play" option in the overlay's legend. The animation will show the flow of the water from the breach. }}

  • Create area.JPG
  • Location area.JPG
  • Draw area.JPG
  • Area attributes.JPG

Notes

Multiple breaches can be added to the same project.

Retrieved from "https://support.tygron.com/w/index.php?title=Visualize_levee_breach_from_water_body_inside_project_area_use_case_(Water_Overlay)&oldid=21072"