Terrain water manning (Water Overlay): Difference between revisions

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===Manning value (terrain)===
====Manning's ''n'' (terrain)====
[[Terrain]]s have an inherent "roughness", which influences how fast water can flow across the surface. This is known as the Manning coefficient or Manning value.
[[Terrain]]s have an inherent "roughness", affecting the flow of water across its surface, which is expressed by the Gauckler–Manning coefficient or, in short, Manning's value (''n'').


===Notes===
====Notes====
* If a construction is present in the same location, the [[Water manning (Water Overlay)|WATER_MANNING]] value of that construction is used instead.
* The default values for this attribute are derived from online accessible databases<ref name="WikiEngineer"/> and can be readily [[How to add and remove an Attribute|adjusted]] by the user.
* If a construction is present on the terrain, the [[Water manning (Water Overlay)|WATER_MANNING]] value of the construction is used instead.
* Only terrains of type '[[Terrain#Surface|surface]]' have an assigned WATER_MANNING.
[[File:Water_manning.png|thumb|left|200px|The default value for the WATER_MANNING attribute of surface type "Open land". The user can change this value.]]


==How-to's==
====See also====
* [[How-to add and remove an attribute|Add and remove an attribute]]
 
==See also==
* [[Surface flow formula (Water Overlay)|Surface flow formula]]
* [[Surface flow formula (Water Overlay)|Surface flow formula]]
* [[Surface model (Water_Overlay)|Surface model]]
* [[Surface model (Water_Overlay)|Surface model]]
==References==
<references>
<ref name="WikiEngineer">WikiEngineer (2008-2011). Manning Roughness Coefficients. Retrieved from: http://wikiengineer.com/Water-Resources/ManningRoughnessCoefficients </ref>
</references>
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{{WaterOverlay terrain attribute nav}}
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{{Water Module buttons}}

Revision as of 12:08, 20 June 2019

Template:Overlay attribute

Manning's n (terrain)

Terrains have an inherent "roughness", affecting the flow of water across its surface, which is expressed by the Gauckler–Manning coefficient or, in short, Manning's value (n).

Notes

  • The default values for this attribute are derived from online accessible databases[1] and can be readily adjusted by the user.
  • If a construction is present on the terrain, the WATER_MANNING value of the construction is used instead.
  • Only terrains of type 'surface' have an assigned WATER_MANNING.
The default value for the WATER_MANNING attribute of surface type "Open land". The user can change this value.

See also

References

  1. ↑ WikiEngineer (2008-2011). Manning Roughness Coefficients. Retrieved from: http://wikiengineer.com/Water-Resources/ManningRoughnessCoefficients
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Terrain attributes
Ground infiltration md •  Hydraulic conductivity md •  Hydraulic conductivity with thickness md •  Root depth m •  Water •  Water evaporation factor •  Water manning •  Water microrlief m •  Water storage percentage
Related
Building attributes • Hydrological features • Hydraulic structures • Model attributes • Results • Simulation data


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