Soil water retention curve (Water Overlay): Difference between revisions

From Tygron Preview Support Wiki
Jump to navigation Jump to search
← Older editNewer edit →
Maxim@tygron.com (talk | contribs)
Tygron, Tygron_admin, Bureaucrats, Administrators
3,883 edits
No edit summary
Maxim@tygron.com (talk | contribs)
Tygron, Tygron_admin, Bureaucrats, Administrators
3,883 edits
No edit summary
Line 8: Line 8:
}}</onlyinclude>}}
}}</onlyinclude>}}


This can be done via the Van Genuchten-Mualem formula:
Set this attribute to <code>1</code> and this can be done via the Van Genuchten-Mualem formula:
: <math>K(theta) = Ks \cdot \sqrt{Se} \cdot (1 - ( 1 - Se^n )^m )^2</math>
: <math>K(theta) = Ks \cdot \sqrt{Se} \cdot (1 - ( 1 - Se^n )^m )^2</math>
Where:
Where:
Line 19: Line 19:
{{article end
{{article end
|notes=* This is still BETA functionality, disabled by default (value=0).  
|notes=* This is still BETA functionality, disabled by default (value=0).  
* For Van Genuchten-Mualem select 1.
|seealso=
|seealso=
* [[Ground infiltration formula (Water Overlay)]]
* [[Ground infiltration formula (Water Overlay)]]

Revision as of 15:48, 16 December 2025

Icon Attribute Unit Range Description Default value
SOIL_WATER_RETENTION_CURVE m Setting a Soil Water Retention Curve retains a fraction of the water in the Unsaturated Zone. 0

Set this attribute to 1 and this can be done via the Van Genuchten-Mualem formula:

K(theta)=Ks⋅Se⋅(1−(1−Sen)m)2

Where:

K(theta) = Is the calculated vertical hydraulic conductivity for the given saturation theta (greek: θ)
Ks = Is the saturated vertical hydraulic conductivity from Terrain ground infiltration md.
Se = Is the effective saturation between 0-1 of the Unsaturated Zone. This is a fraction between Sr (assumed close to zero) and the Water storage percentage.
n = 1/m
m = Van Genuchten Soil parameter.

Notes

  • This is still BETA functionality, disabled by default (value=0).

How-to's

See also

Water Module
Water Module
Tutorials
Overview
Theory
Benchmarks
Group
Model attributes
Allowed water increase m • Avg shore width m • Avg terrain width m • Avg terrain storage m • Breach measurement distance m • Bridge elevation • Culvert dem threshold m • Design flood elevation m • Ground bottom distance m • Ground bottom pressure m • Ground water • Ground water depth m • Ground watertable with surface • Impact flood threshold m • Impact range m • Increased resolution • Infiltration factor s
Limit area • Limit rain • Max infiltration m • Max water bottom m • Microrelief storage fraction • Min max elevation • Object entry correction • Prequel surface level relative • Rise rate distance m • Sewer overflow threshold • Shoreline • Duration min level m • Stabilizer angle • Start date ms • Surface water • Surface water evaporation factor • Timeframe times • Timeframes • Trim manning • Trim evapotranspiration • Trim root depth • Trim ground infiltration • Trim ground conductivity • Trim shoreline conductivity
Related
Building attributes • Hydrological features • Hydraulic structures •  Terrain attributes • Results • Simulation data
Retrieved from "https://previewsupport.tygron.com/w/index.php?title=Soil_water_retention_curve_(Water_Overlay)&oldid=64204"