Model attributes (Water Overlay): Difference between revisions

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The water overlay's model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the water overlay and can be modified as such.
The [[Water Overlay]]'s model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the water overlay and can be modified as such.


{| class="wikitable"
{{overlay attributes|suppresscategory=true|allowselflinks=true|
! Attribute
{{:Allowed water increase m (Water Overlay)}}
! Unit
{{:Avg shore width m (Water Overlay)}}
! Description
{{:Avg terrain width m (Water Overlay)}}
|-
{{:Avg terrain storage m (Water Overlay)}}
|{{anchor|ALLOWED_WATER_INCREASE_M|[[Allowed_water_increase_m_model_attribute_(Water_Overlay)|ALLOWED_WATER_INCREASE_M]]}}
{{:Breach measurement distance m (Water Overlay)}}
|m
{{:Bridge elevation (Water Overlay)}}
|The amount by which the water level on a water terrain must increase before it is considered stressed by water. This is used to compute the {{inlink|WATER_STRESS}} result type.
{{:Culvert dem threshold m (Water Overlay)}}
|-
{{:Design flood elevation m (Water Overlay)}}
|{{anchor|DESIGN_FLOOD_ELEVATION_M|[[Design_flood_elevarion_m_model_attribute_(Water_Overlay)|DESIGN_FLOOD_ELEVATION_M]]}}
{{:Extended reconstruction (Water Overlay)}}
|m
{{:Ground bottom distance m (Water Overlay)}}
|Constructions in the 3D world are assumed to have at most this height compared to the surface of the terrain. Greater values can create a more accurate model but will impact performance.
{{:Ground bottom pressure m (Water Overlay)}}
|-
{{:Ground water (Water Overlay)}}
|{{anchor|GRAVITY|[[Gravity_model_attribute_(Water_Overlay)|GRAVITY]]}}
{{:Ground water depth m (Water Overlay)}}
|m/s²
{{:Ground watertable with surface (Water Overlay)}}
|Used constant for gravitational acceleration
{{:Hydraulic conductivity with thickness (Water Overlay)}}
|-
{{:Impact flood threshold m (Water Overlay)}}
|{{anchor|GROUND_BOTTOM_DISTANCE_M|[[Ground_bottom_distance_m_model_attribute_(Water_Overlay)|GROUND_BOTTOM_DISTANCE_M]]}}
{{:Impact range m (Water Overlay)}}
|m
{{:Increased resolution (Water Overlay)}}
|Assumed distance under the terrain surface where the soil becomes impenetrable for water. The groundwater level cannot go below this depth, relative to the surface. The maximum amount of water that can be stored underground is equal to this attribute multiplied by the local terrain's {{inlink|WATER_STORAGE_PERCENTAGE}}.
{{:Infiltration factor s (Water Overlay)}}
|-
{{:Limit area model attribute (Water Overlay)}}
|{{anchor|GROUND_WATER|[[Ground_water_model_attribute_(Water_Overlay)&action=edit|GROUND_WATER]]}}
{{:Limit rain (Water Overlay)}}
|boolean
{{:Max infiltration m (Water Overlay)}}
|Whether {{inlink|Underground model|underground water flow}} is simulated during the calculation. If this is deactivated, surface infiltration, underground infiltration, and {{inlink|Underground evaporation model|underground evaporation}} do not occur. Water flowing {{inlink|Sewer model|in- and out of the sewer}} are still simulated when sewers are present.
{{:Max water bottom m (Water Overlay)}}
|-
{{:Microrelief storage fraction (Water Overlay)}}
|{{anchor|IMPACT_FLOOD_THRESHOLD_M|IMPACT_FLOOD_THRESHOLD_M}}
{{:min max elevation (Water Overlay)}}
|m
{{:Object entry correction (Water Overlay)}}
|The amount of water a construction must experience before it is considered impacted by water. Water must reach this height either on one of the cells the construction is on, or on one of the cells adjacent to it. This is used to compute the {{inlink|IMPACTED BUILDINGS}} result type.
{{:Prequel surface level relative (Water Overlay)}}
|-
{{:Rise rate distance m (Water Overlay)}}
|{{anchor|LIMIT_RAIN|LIMIT_RAIN}}
{{:Sewer overflow threshold (Water Overlay)}}
|{{boolean}}
{{:Shoreline (Water Overlay)}}
|Whether rainfall locations should be limited to water level areas (1) or everywhere (0).
{{:Show duration flood level m (Water Overlay)}}
|-
{{:Stabilizer angle (Water Overlay)}}
|{{anchor|MAX_WATER_DEPTH_M|MAX_WATER_DEPTH_M}}
{{:Start date ms (Water Overlay)}}
|m
{{:Surface water (Water Overlay)}}
|
{{:Surface water evaporation factor (Water Overlay)}}
|-
{{:Timeframe times (Water Overlay)}}
|{{anchor|MIN_SLOPE|MIN_SLOPE}}
{{:Timeframes (Water Overlay)}}
|ratio
{{:Unsaturated fraction (Water Overlay)}}
|The minimum slope required to account for the effect of gravity on the speed of the water. If the slope of the terrain is less than the minimum slope, the effect of gravity on the speed of the water is assumed to be 0. The ratio is the height over distance.
{{:Weir dam multiplier (Water Overlay)}}
|-
{{:Weir move interval s (Water Overlay)}}
|{{anchor|QUAD_CELL|QUAD_CELL}}
{{:Weir move step m (Water Overlay)}}
|boolean
{{:Weir move range m (Water Overlay)}}
|This attribute name is reserved for future functionality. Currently, this marks an experimental feature which is currently under development and may result in unexpected behavior when activated.
}}
|-
 
|{{anchor|SEWER_OVERFLOW_THRESHOLD|SEWER_OVERFLOW_THRESHOLD}}
{{WaterOverlay model attribute nav}}
|fraction
[[Category:Water Module]]
|How much of a sewer's storage must be filled with water before the {{inlink|Sewer overflow|sewer's overflows}} are allowed to overflow water.
|-
|{{anchor|SHOW_DURATION_FLOOD_LEVEL_M|SHOW_DURATION_FLOOD_LEVEL_M}}
|m
|The amount of water which must be present in a specific location before the duration of surface water can be recorded. This is used to compute the {{inlink|SURFACE_DURATION}} result type.
|-<!--
|{{anchor|SUPERGRID|SUPERGRID}}
|boolean
|This attribute name is reserved for future functionality. Currently, this marks an experimental feature which is currently under development and may result in unexpected behavior when activated.
|--->
|{{anchor|SURFACE_WATER_EVAPORATION_FACTOR|SURFACE_WATER_EVAPORATION_FACTOR}}
|factor
|The factor by which the {{inlink|lcase=1|Weather}}'s evaporation factor is multiplied to compute the amount of {{inlink|Evaporation model|evaporation}} which takes place on the surface.
|-
|{{anchor|TIMEFRAMES|TIMEFRAMES}}
|integer
|The number of intermediate results recorded during the calculation. Each {{inlink|Timeframes|timeframe}} becomes a snapshot of data which can be viewed and analysed. The total simulation time is divided by this value, and at each interval of that period of time a snapshot of the results so far is made. Note that the first timeframe does not contain the starting conditions of the simulation, but the state of the simulation after the first period of time has passed.
|-
|{{anchor|WALL_ANGLE|WALL_ANGLE}}
|
|
|}

Latest revision as of 09:23, 24 January 2024

The Water Overlay's model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the water overlay and can be modified as such.