Ground infiltration formula (Water Overlay) - Revision history

Maxim@tygron.com: /* Soil Water Retention Curve (BETA) */

2025-12-16T14:16:42Z

Soil Water Retention Curve (BETA)

← Older revision		Revision as of 14:16, 16 December 2025
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	==Soil Water Retention Curve (BETA)==		==Soil Water Retention Curve (BETA)==
	The [[Soil water retention curve (Water Overlay\|Soil water retention curve]] (SWRC) defines the relationship between the saturation and the infiltration speed in the Unsaturated Zone.		The [[Soil water retention curve (Water Overlay)\|Soil water retention curve]] (SWRC) defines the relationship between the saturation and the infiltration speed in the Unsaturated Zone.

	==Related==		==Related==

Maxim@tygron.com: /* Soil Water Retention Curve (BETA) */

2025-12-16T14:16:26Z

Soil Water Retention Curve (BETA)

← Older revision		Revision as of 14:16, 16 December 2025
Line 27:		Line 27:

	==Soil Water Retention Curve (BETA)==		==Soil Water Retention Curve (BETA)==
	The [[Soil water retention curve (~~water~~ Overlay\|Soil water retention curve]] (SWRC) defines the relationship between the saturation and the infiltration speed in the Unsaturated Zone.		The [[Soil water retention curve (Water Overlay\|Soil water retention curve]] (SWRC) defines the relationship between the saturation and the infiltration speed in the Unsaturated Zone.

	==Related==		==Related==

Maxim@tygron.com at 14:16, 16 December 2025

2025-12-16T14:16:13Z

← Older revision		Revision as of 14:16, 16 December 2025
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	: <math>d_{i}</math> = The height distance in the unsaturated zone which can be subject to infiltration to the saturated zone.		: <math>d_{i}</math> = The height distance in the unsaturated zone which can be subject to infiltration to the saturated zone.
	: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.		: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.

			==Soil Water Retention Curve (BETA)==
			The [[Soil water retention curve (water Overlay\|Soil water retention curve]] (SWRC) defines the relationship between the saturation and the infiltration speed in the Unsaturated Zone.

	==Related==		==Related==

Maxim@tygron.com at 09:08, 15 December 2025

2025-12-15T09:08:37Z

← Older revision		Revision as of 09:08, 15 December 2025
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	[[File:underground_model.jpg\|thumb\|right\|Water can infiltrate from the unsaturated zone to the saturated zone.]]		[[File:underground_model.jpg\|thumb\|right\|Water can infiltrate from the unsaturated zone to the saturated zone.]]
	The infiltration from the unsaturated zone to the saturated zone is calculated per cell. When the unsaturated zone fraction drops below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is stopped. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].		The infiltration from the unsaturated zone to the saturated zone is calculated per cell.

	First the height of the unsaturated zone is calculated.		First the height of the unsaturated zone is calculated.
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	: <math>d_{i}</math> = The height distance in the unsaturated zone which can be subject to infiltration to the saturated zone.		: <math>d_{i}</math> = The height distance in the unsaturated zone which can be subject to infiltration to the saturated zone.
	: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.		: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.

	~~==Uptake (BETA)==~~
	When the unsaturated zone fraction is below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] ground water is transported from the saturated zone to the unsaturated zone to compensate.

	Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.

	~~This functionality is disabled by default and can be activated by setting [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]] attribute to e.g. 5.~~

	==Related==		==Related==

Maxim@tygron.com: /* Uptake (BETA) */

2025-12-04T18:49:06Z

Uptake (BETA)

← Older revision		Revision as of 18:49, 4 December 2025
Line 27:		Line 27:

	==Uptake (BETA)==		==Uptake (BETA)==
	When the unsaturated zone fraction is below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] ground water is transported from the saturated zone to the unsaturated zone to compensate.		When the unsaturated zone fraction is below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] ground water is transported from the saturated zone to the unsaturated zone to compensate.

	Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.		Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.

			This functionality is disabled by default and can be activated by setting [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]] attribute to e.g. 5.

	==Related==		==Related==

Maxim@tygron.com at 18:47, 4 December 2025

2025-12-04T18:47:48Z

← Older revision		Revision as of 18:47, 4 December 2025
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	[[File:underground_model.jpg\|thumb\|right\|Water can infiltrate from the unsaturated zone to the saturated zone.]]		[[File:underground_model.jpg\|thumb\|right\|Water can infiltrate from the unsaturated zone to the saturated zone.]]
	The infiltration from the unsaturated zone to the saturated zone is calculated per cell.		The infiltration from the unsaturated zone to the saturated zone is calculated per cell. When the unsaturated zone fraction drops below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is stopped. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].

	First the height of the unsaturated zone is calculated.		First the height of the unsaturated zone is calculated.
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	: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.		: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.

	==~~Minimal Fraction~~ (BETA)==		==Uptake (BETA)==
	When the unsaturated zone fraction ~~drops~~ below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] ~~this process is reversed and~~ water is transported from the saturated zone to the unsaturated zone to compensate~~. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]]~~.		When the unsaturated zone fraction is below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] ground water is transported from the saturated zone to the unsaturated zone to compensate.

	Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.		Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.

Maxim@tygron.com: /* Minimal Fraction */

2025-12-04T15:05:08Z

Minimal Fraction

← Older revision		Revision as of 15:05, 4 December 2025
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	: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.		: <math>\Delta w_i</math> = The infiltration which takes place from the unsaturated zone to the saturated zone.

	==Minimal Fraction==		==Minimal Fraction (BETA)==
	When the unsaturated zone fraction drops below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].		When the unsaturated zone fraction drops below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].

Maxim@tygron.com: /* Minimal Fraction */

2025-12-04T11:35:45Z

Minimal Fraction

← Older revision		Revision as of 11:35, 4 December 2025
Line 27:		Line 27:

	==Minimal Fraction==		==Minimal Fraction==
	When the unsaturated zone fraction drops below the terrain's [[~~Min~~ unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].		When the unsaturated zone fraction drops below the terrain's [[Terrain min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].

	Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.		Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.

Maxim@tygron.com: /* Minimal Fraction */

2025-12-04T11:34:50Z

Minimal Fraction

← Older revision		Revision as of 11:34, 4 December 2025
Line 27:		Line 27:

	==Minimal Fraction==		==Minimal Fraction==
	When the unsaturated zone fraction drops below the terrain's [[Min unsaturated fraction (~~Terrain Attribute~~)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].		When the unsaturated zone fraction drops below the terrain's [[Min unsaturated fraction (Water Overlay)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].

	Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.		Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.

Maxim@tygron.com: /* Minimal Fraction */

2025-12-04T11:33:31Z

Minimal Fraction

← Older revision		Revision as of 11:33, 4 December 2025
Line 27:		Line 27:

	==Minimal Fraction==		==Minimal Fraction==
	When the unsaturated zone fraction drops below the terrain's [[Min unsaturated fraction (Terrain Attribute)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can be dynamically adjusted, based on other factors, during the simulation ~~via~~ [[Simulation_Core\|iterations]].		When the unsaturated zone fraction drops below the terrain's [[Min unsaturated fraction (Terrain Attribute)\|MIN_UNSATURATED_FRACTION]] this process is reversed and water is transported from the saturated zone to the unsaturated zone to compensate. This 'min fraction' can also be dynamically adjusted, based on other factors, during the simulation using [[Simulation_Core\|iterations]].

	Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.		Until the ground water (saturated zone) drops below the [[Ground water max uptake depth m (Water Overlay)\|GROUND_WATER_MAX_UPTAKE_DEPTH_M]]. Below this depth no uptake (capillary or root) is active, the only flow is downwards.