Tracer flow model (Water Overlay): Difference between revisions

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Chemicals can be modeled in the hydrological model, as quantities picked up and carried along with the water.
Substances can be modeled in the hydrological model, as quantities dissolved in water and transported by flowing water.


The chemical model can be implicitly activated and deactivated by having construction in the project area have the appropriate attributes configured. If no constructions have attributes configured to interact with the quantities of chemicals, then no chemicals are computed.
The substance model can be activated and deactivated by adding or removing the appropriate attributes to one or more construction in the project area. If no constructions have attributes configured to interact with the quantities of substances, then no substances are created or transported.


Chemicals are tracked as an exact amount on a given location. The substances are generically defined and do not have a set unit or magnitude.
Substances are stored as an exact amount per grid cell, in three different layers: surface, unsaturated and saturated underground.  
The substances are generically defined and do not have a set unit or magnitude. Furthermore, at most four different substances can be added and followed.


Chemicals are added to the hydrological model and removed from the hydrological model by [[Substance ABCD (Water Overlay)|chemical emitters and decomposers]]. The chemicals created are then placed on the [[Surface model (Water Overlay)|surface]] of the cells where they are created. Chemicals can also be removed by chemical constructions, if their attributes are configured appropriately. When chemicals enter the cell which contains a chemical decomposer, the chemicals are removed from the hydrological model.
Conceptually, substances are added to and removed from the hydrological model by [[Substance ABCD (Water Overlay)|substance emitters and decomposers]]. The substances created are then placed on the [[Surface model (Water Overlay)|surface]] of the grid cells in which the emitters are present. Substances can also be decomposed by constructions, if their attributes are configured with a negative value. When substances are present in a cell which contains a substance decomposer, the substances are consequently removed from the hydrological model.


When water moves from a cell which also contains chemicals, the chemicals are carried along with the water. The chemicals are uniformly distributed between the water which remains in the cell, which flows to other cells, and which infiltrates. Water which flows into the sewer explicitly cannot carry chemicals along with it.
When water moves from a cell which also contains chemicals, the chemicals are carried along with the water. The chemicals are uniformly distributed between the water which remains in the cell, which flows to other cells, and which infiltrates. Water which flows into the sewer explicitly cannot carry chemicals along with it.
===Notes===
It is currently not possible to initialize grid cells with a specific amount for a substance.
It is currently not possible to emit substances directly into the unsaturated or saturated underground and neither can it decompose there.


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Revision as of 14:20, 10 April 2019

Substances can be modeled in the hydrological model, as quantities dissolved in water and transported by flowing water.

The substance model can be activated and deactivated by adding or removing the appropriate attributes to one or more construction in the project area. If no constructions have attributes configured to interact with the quantities of substances, then no substances are created or transported.

Substances are stored as an exact amount per grid cell, in three different layers: surface, unsaturated and saturated underground. The substances are generically defined and do not have a set unit or magnitude. Furthermore, at most four different substances can be added and followed.

Conceptually, substances are added to and removed from the hydrological model by substance emitters and decomposers. The substances created are then placed on the surface of the grid cells in which the emitters are present. Substances can also be decomposed by constructions, if their attributes are configured with a negative value. When substances are present in a cell which contains a substance decomposer, the substances are consequently removed from the hydrological model.

When water moves from a cell which also contains chemicals, the chemicals are carried along with the water. The chemicals are uniformly distributed between the water which remains in the cell, which flows to other cells, and which infiltrates. Water which flows into the sewer explicitly cannot carry chemicals along with it.

Notes

It is currently not possible to initialize grid cells with a specific amount for a substance. It is currently not possible to emit substances directly into the unsaturated or saturated underground and neither can it decompose there.

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