Infiltration model (Water Overlay) - Revision history

Maxim@tygron.com: /* Related formulas */

2025-07-16T13:47:01Z

Related formulas

← Older revision		Revision as of 13:47, 16 July 2025
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	* [[Ground flow formula (Water Overlay)]]		* [[Ground flow formula (Water Overlay)]]
	* [[Surface infiltration formula (Water Overlay)]]		* [[Surface infiltration formula (Water Overlay)]]
	* [[Ground ~~infiltration~~ formula (Water Overlay)]]		* [[Ground transpiration formula (Water Overlay)]]

	==Related models==		==Related models==

Maxim@tygron.com at 13:46, 16 July 2025

2025-07-16T13:46:47Z

← Older revision		Revision as of 13:46, 16 July 2025
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	==Infiltration==		==Infiltration==
	[[File:Infiltration_model.jpg]]		[[File:Infiltration_model.jpg\|500px]]
	{{clear}}		{{clear}}
	===Surface infiltration===		===Surface infiltration===
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	* [[Ground model (Water Overlay)]]		* [[Ground model (Water Overlay)]]
	* [[Tracer flow model (Water Overlay)]]		* [[Tracer flow model (Water Overlay)]]
	* [[~~Evaporation~~ model (Water Overlay)]]		* [[Evapotranspiration model (Water Overlay)]]

	{{Template:WaterOverlay formula nav}}		{{Template:WaterOverlay formula nav}}

Frank@tygron.nl: /* Related formulas */

2024-01-29T16:38:54Z

Related formulas

← Older revision		Revision as of 16:38, 29 January 2024
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	==Related formulas==		==Related formulas==
	* [[Groundwater level formula (Water Overlay)~~\|Groundwater level formula~~]]		* [[Groundwater level formula (Water Overlay)]]
	* [[Ground flow formula (Water Overlay)]]		* [[Ground flow formula (Water Overlay)]]
	* [[Surface infiltration formula (Water Overlay)]]		* [[Surface infiltration formula (Water Overlay)]]

Frank@tygron.nl: /* Related models */

2024-01-29T16:38:48Z

Related models

← Older revision		Revision as of 16:38, 29 January 2024
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	==Related models==		==Related models==
	* [[Surface model (Water Overlay)~~\|Surface model~~]]		* [[Surface model (Water Overlay)]]
	* [[Ground model (Water Overlay)]]		* [[Ground model (Water Overlay)]]
	* [[Tracer flow model (Water Overlay)]]		* [[Tracer flow model (Water Overlay)]]

Frank@tygron.nl: /* Ground infiltration */

2024-01-29T16:33:00Z

Ground infiltration

← Older revision		Revision as of 16:33, 29 January 2024
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	Water can flow further down into the saturated zone at a speed defined by the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute. Based on the given timestep and infiltration speed, the distance the water can travel downwards is determined. This distance can be projected on this unsaturated zone as a subsection. The amount of water that flows from the unsaturated zone to the saturated zone is then equal to the amount of water in this subsection. After water has been added to the saturated zone, the groundwater level (and thus the height of the saturated zone) is redetermined. The water remaining in the unsaturated zone is redistributed uniformly across the (remaining) unsaturated zone.		Water can flow further down into the saturated zone at a speed defined by the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute. Based on the given timestep and infiltration speed, the distance the water can travel downwards is determined. This distance can be projected on this unsaturated zone as a subsection. The amount of water that flows from the unsaturated zone to the saturated zone is then equal to the amount of water in this subsection. After water has been added to the saturated zone, the groundwater level (and thus the height of the saturated zone) is redetermined. The water remaining in the unsaturated zone is redistributed uniformly across the (remaining) unsaturated zone.

	The infiltration speed is multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc. By default the factor is set to 1.		The ground infiltration speed is multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc. By default the factor is set to 1.

	Ground infiltration is only active when the Ground water mode is set to '''Complete'''.		Ground infiltration is only active when the Ground water mode is set to '''Complete'''.

Frank@tygron.nl: /* Ground infiltration */

2024-01-29T16:32:24Z

Ground infiltration

← Older revision		Revision as of 16:32, 29 January 2024
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	===Ground infiltration===		===Ground infiltration===
	Water can flow further down into the saturated zone at a speed defined by the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute. Based on the given timestep and infiltration speed, the distance the water can travel downwards is determined. This distance can be projected on this unsaturated zone as a subsection. The amount of water that flows from the unsaturated zone to the saturated zone is then equal to the amount of water in this subsection. After water has been added to the saturated zone, the groundwater level (and thus the height of the saturated zone) is redetermined. The water remaining in the unsaturated zone is redistributed uniformly across the (remaining) unsaturated zone.		Water can flow further down into the saturated zone at a speed defined by the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute. Based on the given timestep and infiltration speed, the distance the water can travel downwards is determined. This distance can be projected on this unsaturated zone as a subsection. The amount of water that flows from the unsaturated zone to the saturated zone is then equal to the amount of water in this subsection. After water has been added to the saturated zone, the groundwater level (and thus the height of the saturated zone) is redetermined. The water remaining in the unsaturated zone is redistributed uniformly across the (remaining) unsaturated zone.

			The infiltration speed is multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc. By default the factor is set to 1.

	Ground infiltration is only active when the Ground water mode is set to '''Complete'''.		Ground infiltration is only active when the Ground water mode is set to '''Complete'''.

Frank@tygron.nl: /* Surface infiltration */

2024-01-29T16:32:07Z

Surface infiltration

← Older revision		Revision as of 16:32, 29 January 2024
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	Surface water can infiltrate into the unsaturated ground layer. When it does, it infiltrates at a speed defined by the surface terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, or (if present) by the building's [[Ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]], whichever value is lowest. Thus, the least conductive layer will be the bottleneck, even if the other layers allow better infiltration.		Surface water can infiltrate into the unsaturated ground layer. When it does, it infiltrates at a speed defined by the surface terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, or (if present) by the building's [[Ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]], whichever value is lowest. Thus, the least conductive layer will be the bottleneck, even if the other layers allow better infiltration.

	~~Optionally the~~ infiltration speed ~~can be~~ multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc.		The infiltration speed is multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc. By default the factor is set to 1.

	Water infiltrating into the unsaturated layer is assumed to be spread equally across the entire unsaturated column within the grid cell.		Water infiltrating into the unsaturated layer is assumed to be spread equally across the entire unsaturated column within the grid cell.

Frank@tygron.nl at 15:52, 26 January 2024

2024-01-26T15:52:08Z

← Older revision		Revision as of 15:52, 26 January 2024
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	Surface infiltration Only is active when the [[Ground_water_(Water_Overlay)\|Ground water mode]] is set to '''Infiltration Only'''.		Surface infiltration Only is active when the [[Ground_water_(Water_Overlay)\|Ground water mode]] is set to '''Infiltration Only'''.

	This is a lighter simulation that calculates only the infiltration speed and has a fixed maximum storage capacity in the unsaturated layer. The maximum amount of storage capacity can be set via a fixed attribute value [[Max infiltration m (Water Overlay)\|MAX_INFILTRATION_M]] or using a [[Max_infiltration_prequel_(Water_Overlay)\| Max infiltration prequel]] per ~~gridcell~~.		This is a lighter simulation that calculates only the infiltration speed and has a fixed maximum storage capacity in the unsaturated layer. The maximum amount of storage capacity can be set via a fixed attribute value [[Max infiltration m (Water Overlay)\|MAX_INFILTRATION_M]] or using a [[Max_infiltration_prequel_(Water_Overlay)\| Max infiltration prequel]] per grid cell.

	===Ground infiltration===		===Ground infiltration===

Frank@tygron.nl at 15:51, 26 January 2024

2024-01-26T15:51:59Z

← Older revision		Revision as of 15:51, 26 January 2024
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	The [[Water Module]] supports two types of infiltration: infiltration from the surface to the unsaturated zone and infiltration from the unsaturated zone to the saturated zone. Additionally, exfiltration can also occur due to [[~~Underground_flow_formula_~~(Water_Overlay)\|horizontal groundwater flow]].		The [[Water Module]] supports two types of infiltration: infiltration from the surface to the unsaturated zone and infiltration from the unsaturated zone to the saturated zone. Additionally, exfiltration can also occur due to [[Ground_flow_formula_(Water_Overlay)\|horizontal groundwater flow]].

	==Infiltration==		==Infiltration==
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	{{clear}}		{{clear}}
	===Surface infiltration===		===Surface infiltration===
	Surface water can infiltrate into the unsaturated ground layer. When it does, it infiltrates at a speed defined by the surface terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, the ~~underground~~ terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, or (if present) by the building's [[Ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]], whichever value is lowest. Thus, the least conductive layer will be the bottleneck, even if the other layers allow better infiltration.		Surface water can infiltrate into the unsaturated ground layer. When it does, it infiltrates at a speed defined by the surface terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, or (if present) by the building's [[Ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]], whichever value is lowest. Thus, the least conductive layer will be the bottleneck, even if the other layers allow better infiltration.

	Optionally the infiltration speed can be multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc.		Optionally the infiltration speed can be multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc.
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	This is a lighter simulation that calculates only the infiltration speed and has a fixed maximum storage capacity in the unsaturated layer. The maximum amount of storage capacity can be set via a fixed attribute value [[Max infiltration m (Water Overlay)\|MAX_INFILTRATION_M]] or using a [[Max_infiltration_prequel_(Water_Overlay)\| Max infiltration prequel]] per gridcell.		This is a lighter simulation that calculates only the infiltration speed and has a fixed maximum storage capacity in the unsaturated layer. The maximum amount of storage capacity can be set via a fixed attribute value [[Max infiltration m (Water Overlay)\|MAX_INFILTRATION_M]] or using a [[Max_infiltration_prequel_(Water_Overlay)\| Max infiltration prequel]] per gridcell.

	===~~Underground~~ infiltration===		===Ground infiltration===
	Water can flow further down into the saturated zone at a speed defined by the ~~underground~~ terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute. Based on the given timestep and infiltration speed, the distance the water can travel downwards is determined. This distance can be projected on this unsaturated zone as a subsection. The amount of water that flows from the unsaturated zone to the saturated zone is then equal to the amount of water in this subsection. After water has been added to the saturated zone, the groundwater level (and thus the height of the saturated zone) is redetermined. The water remaining in the unsaturated zone is redistributed uniformly across the (remaining) unsaturated zone.		Water can flow further down into the saturated zone at a speed defined by the ground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute. Based on the given timestep and infiltration speed, the distance the water can travel downwards is determined. This distance can be projected on this unsaturated zone as a subsection. The amount of water that flows from the unsaturated zone to the saturated zone is then equal to the amount of water in this subsection. After water has been added to the saturated zone, the groundwater level (and thus the height of the saturated zone) is redetermined. The water remaining in the unsaturated zone is redistributed uniformly across the (remaining) unsaturated zone.

	~~Underground~~ infiltration is only active when the Ground water mode is set to '''Complete'''.		Ground infiltration is only active when the Ground water mode is set to '''Complete'''.

	==Exfiltration==		==Exfiltration==
	Water stored in the ~~underground~~ saturated zone can also exfiltrate out of the ~~underground~~ and back onto the surface, if the groundwater table exceeds the [[elevation model (Water Overlay)\|surface elevation]]. This situation can occur due to [[~~Underground_model_~~(Water_Overlay)\|horizontal ~~underground~~ flow]]. ~~Underground~~ water flow into an adjacent cell is calculated, based on properties of the ~~underground~~. Then, the groundwater table is adjusted accordingly, but may prove to exceed the [[terrain height (Water Overlay)\|height of the surface]]. The excess is placed on the surface of that cell instead.		Water stored in the saturated zone can also exfiltrate out of the ground and back onto the surface, if the groundwater table exceeds the [[elevation model (Water Overlay)\|surface elevation]]. This situation can occur due to [[Ground model (Water_Overlay)\|horizontal ground flow]]. Ground water flow into an adjacent cell is calculated, based on properties of the ground. Then, the groundwater table is adjusted accordingly, but may prove to exceed the [[terrain height (Water Overlay)\|height of the surface]]. The excess is placed on the surface of that cell instead.

	==Related formulas==		==Related formulas==
	* [[Groundwater level formula (Water Overlay)\|Groundwater level formula]]		* [[Groundwater level formula (Water Overlay)\|Groundwater level formula]]
	* [[~~Underground~~ flow formula (Water Overlay)~~\|Underground flow formula~~]]		* [[Ground flow formula (Water Overlay)]]
	* [[Surface infiltration formula (Water Overlay)~~\|Surface infiltration formula~~]]		* [[Surface infiltration formula (Water Overlay)]]
	* [[~~Underground~~ infiltration formula (Water Overlay)~~\|Underground infiltration formula~~]]		* [[Ground infiltration formula (Water Overlay)]]

	==Related models==		==Related models==
	* [[Surface model (Water Overlay)\|Surface model]]		* [[Surface model (Water Overlay)\|Surface model]]
	* [[~~underground~~ model (Water Overlay)~~\|Underground model~~]]		* [[Ground model (Water Overlay)]]
	* [[Tracer flow model (Water Overlay)~~\|Tracer flow model~~]]		* [[Tracer flow model (Water Overlay)]]
	* [[Evaporation model (Water Overlay)~~\|Evaporation model~~]]		* [[Evaporation model (Water Overlay)]]

	{{Template:WaterOverlay formula nav}}		{{Template:WaterOverlay formula nav}}

Frank@tygron.nl: /* Surface infiltration */

2023-01-19T15:30:22Z

Surface infiltration

← Older revision		Revision as of 15:30, 19 January 2023
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	Surface water can infiltrate into the unsaturated ground layer. When it does, it infiltrates at a speed defined by the surface terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, the underground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, or (if present) by the building's [[Ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]], whichever value is lowest. Thus, the least conductive layer will be the bottleneck, even if the other layers allow better infiltration.		Surface water can infiltrate into the unsaturated ground layer. When it does, it infiltrates at a speed defined by the surface terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, the underground terrain's [[terrain ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]] attribute, or (if present) by the building's [[Ground infiltration md (Water Overlay)\|GROUND_INFILTRATION_MD]], whichever value is lowest. Thus, the least conductive layer will be the bottleneck, even if the other layers allow better infiltration.

	Optionally the infiltration speed can be multiplied with the [[~~Infil~~ factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc.		Optionally the infiltration speed can be multiplied with the [[Infiltration factor s (Water Overlay)\|INFILTRATION_FACTOR_S]]. This way you can limit or increase infiltration over time to simulate e.g. limited infiltration capacity due to saturation, temperature, atmospheric pressure, etc.

	Water infiltrating into the unsaturated layer is assumed to be spread equally across the entire unsaturated column within the grid cell.		Water infiltrating into the unsaturated layer is assumed to be spread equally across the entire unsaturated column within the grid cell.