Object flow output (Water Overlay): Difference between revisions

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This attribute is automatically created for all relevant hydraulic structures in a project when a [[Water Overlay|water calculation]] is performed. When the calculation completes the value is updated automatically.
This attribute is automatically created for all relevant hydraulic structures in a project when a [[Water Overlay|water calculation]] is performed. When the calculation is complete, the attribute is updated automatically.


For [[Point-based construction (Water Overlay)|point-based construction]]s, a positive value means a net amount of water was added to the surface. A negative value means a net amount of water was removed from the surface. For [[Line-based construction (Water Overlay)|line-based construction]]s, positive or negative indicates the net direction the water has flowed.
For [[Point-based construction (Water Overlay)|point-based construction]]s, a positive value means a net amount of water was added to the surface. A negative value means a net amount of water was removed from the surface. <br>
For [[Line-based construction (Water Overlay)|line-based construction]]s, positive or negative indicates the net direction the water has flowed.


Invalid water objects have an Object flow output attribute value of {{no data attribute}} for easy exporting/debugging.
All [[Hydraulic_structures_(Water_Overlay)|hydraulic structures]] have an OBJECT_FLOW_OUTPUT attribute.
Also a [[Breach_(Water_Overlay)|breach area]] and a [[Sewer_area_(Water_Overlay)|Sewer area]] have this attribute.


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* This attribute does not need to be created when configuring the project. This attribute is created automatically by the [[Water Overlay]] when a calculation is performed.
* This attribute does not need to be created when configuring the project. This attribute is created automatically by the [[Water Overlay]] when a calculation is performed.
* Each [[Water Overlay]] will create this attribute with the [[ID]] of an Overlay appended to it, to prevent the results of multiple Water Overlays storing their results in the same attribute by default.
* Each [[Water Overlay]] will create this attribute with the [[ID]] of an Overlay appended to it, to prevent the results of multiple Water Overlays storing their results in the same attribute by default.
* Invalid water objects have an Object flow output attribute value of {{no data attribute}} for easy exporting/debugging.
* The value is stored per [[Timeframes (Water Overlay)|timeframe]] and represents the amount of water transported in m³ for the period of that timeframe. Therefore the total object flow during the entire simulation can be computed as the sum of the individual values per timeframe.
* The value is stored per [[Timeframes (Water Overlay)|timeframe]] and represents the amount of water transported in m³ for the period of that timeframe. Therefore the total object flow during the entire simulation can be computed as the sum of the individual values per timeframe.
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Revision as of 10:18, 3 March 2021

Icon Key Unit Range Description Default value
OBJECT_FLOW_OUTPUT m3 An array of values, each value indicating the amount of water which has flowed through this construction during each timeframe. None

This attribute is automatically created for all relevant hydraulic structures in a project when a water calculation is performed. When the calculation is complete, the attribute is updated automatically.

For point-based constructions, a positive value means a net amount of water was added to the surface. A negative value means a net amount of water was removed from the surface.
For line-based constructions, positive or negative indicates the net direction the water has flowed.

All hydraulic structures have an OBJECT_FLOW_OUTPUT attribute. Also a breach area and a Sewer area have this attribute.

Notes

  • This attribute does not need to be created when configuring the project. This attribute is created automatically by the Water Overlay when a calculation is performed.
  • Each Water Overlay will create this attribute with the ID of an Overlay appended to it, to prevent the results of multiple Water Overlays storing their results in the same attribute by default.
  • Invalid water objects have an Object flow output attribute value of NO_DATA: (~ -3.4+e38) for easy exporting/debugging.
  • The value is stored per timeframe and represents the amount of water transported in m³ for the period of that timeframe. Therefore the total object flow during the entire simulation can be computed as the sum of the individual values per timeframe.

How-to's

See also

  • Analyses of a pinching culvert (Dutch only)
Water Module
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Water Module
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Tutorials
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Overview
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Theory
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Benchmarks
Group
Inlet
Inlet q • Inlet area • Inlet capacity •  Lower threshold •  Upper threshold • Inlet underground
Pump
Pump q •  Lower threshold •  Upper threshold • Pump angle • Pump capacity • Pump area
Culvert
Culvert diameter • Culvert rectangular height • Culvert threshold • Culvert n
Weir
Weir height • Weir width • Weir angle • Weir coefficient • Weir target level
Sewer overflow
Sewer overflow • Sewer overflow speed
Drainage
Drainage q • Drainage datum • Drainage active • Drainage overflow threshold
Output
Object flow output • Object height output • Object datum output a • Object datum output b • Object width output
Related
Building attributes • Hydrological features •  Terrain attributes • Model attributes • Results • Simulation data
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