Surface infiltration formula (Water Overlay): Difference between revisions

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* I<sub>surf</sub> = The [[Terrain ground infiltration md (Water Overlay)|GROUND_INFILTRATION_MD]] of the surface terrain type. This value should be interpreted as the vertical conductivity (Kv) of the sub-soil.
* I<sub>surf</sub> = The [[Terrain ground infiltration md (Water Overlay)|GROUND_INFILTRATION_MD]] of the surface terrain type. This value should be interpreted as the vertical conductivity (Kv) of the sub-soil.


==Related models==
==Related==
* [[Surface model (Water Overlay)|Surface model]]
The following topics are related to this formula.
* [[Underground model (Water Overlay)|Underground model]]
; Formulas
* [[Infiltration model (Water Overlay)|Infiltration model]]
: [[Surface water level formula (Water Overlay)|Surface water level formula]]
: [[Groundwater level formula (Water Overlay)|Groundwater level formula]]
: [[Underground infiltration formula (Water Overlay)|Underground infiltration formula]]
; Models
: [[Surface model (Water Overlay)|Surface model]]
: [[Underground model (Water Overlay)|Underground model]]
: [[Infiltration model (Water Overlay)|Infiltration model]]
: [[Substance flow model (Water Overlay)|Substance flow model]]


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Revision as of 08:25, 19 June 2019

Surface infiltration is calculated per cell.

First, the infiltration capacities are calculated:

Cwater = Wsurface
Ctop = max( Icon, Isurf )
Isurf = 0 if a construction is present
Icon = 0 if no construction is present

Then the actual infiltration:

Δw = min( Cwater , Δt * Ctop)

Where:

  • Δw = The surface infiltration which takes place.
  • Δt = Computational timestep.
  • Cwater = The amount of infiltration that can take place based on the amount of water on the surface.
  • Ctop = The amount of infiltration that can take place based on the infiltration values present.
  • Wsurface = The amount of water (the water column) on the surface.
  • Icon = The GROUND_INFILTRATION_MD of a construction on a specific cell (if present).
  • Isurf = The GROUND_INFILTRATION_MD of the surface terrain type. This value should be interpreted as the vertical conductivity (Kv) of the sub-soil.

Related

The following topics are related to this formula.

Formulas
Surface water level formula
Groundwater level formula
Underground infiltration formula
Models
Surface model
Underground model
Infiltration model
Substance flow model

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