Water Overlay: Difference between revisions

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;[[Hydraulic structures (Water Overlay)|Hydraulic structures]]
;[[Hydraulic structures (Water Overlay)|Hydraulic structures]]
:See [[Hydraulic structures (Water Overlay)|Hydraulic structures]] for the list of supported structures.
:See [[Hydraulic structures (Water Overlay)|Hydraulic structures]] for the list of supported structures.
;[[Additional_hydrological_attributes_of_constructions_(Water Overlay)|Hydrological attributes of constructions]]
;[[Additional_hydrological_attributes_of_buildings_(Water Overlay)|Hydrological attributes of buildings]]
:Besides the [[construction]]s which directly influence the hydrologic model as a [[Hydraulic structures (Water Overlay)|hydraulic structure]], each construction may also have attributes which can contribute to the hydrological model in some way. These attributes are stored and used on a grid cell level. This is different from the hydraulic structure attributes, which are stored and used on an object level. For a full list, see [[Additional_hydrological_attributes_of_constructions_(Water Overlay)|Additional hydrological attributes of constructions]].
:Besides the [[building]]s which directly influence the hydrologic model as a [[Hydraulic structures (Water Overlay)|hydraulic structure]], each building may also have attributes which can contribute to the hydrological model in some way. These attributes are stored and used on a grid cell level. This is different from the hydraulic structure attributes, which are stored and used on an object level. For a full list, see [[Additional_hydrological_attributes_of_buildings_(Water Overlay)|Additional hydrological attributes of buildings]].
;[[Terrain_attributes_(Water_Overlay)| Hydrological attributes of terrain]]
;[[Terrain_attributes_(Water_Overlay)| Hydrological attributes of terrain]]
:[[Terrain]]s in a project have a number of hydrological attributes which can influence the flow of water in a project. Because there is always both surface and underground terrain defined for the entirety of the project area, all cells are affected by all attributes of terrains, unless a construction is present with overwriting values. For a full list, see [[Terrain_attributes_(Water_Overlay)| Terrain attributes for the water overlay]].
:[[Terrain]]s in a project have a number of hydrological attributes which can influence the flow of water in a project. Because there is always both surface and underground terrain defined for the entirety of the project area, all cells are affected by all attributes of terrains, unless a building is present with overwriting values. For a full list, see [[Terrain_attributes_(Water_Overlay)| Terrain attributes for the water overlay]].
;[[Model_attributes_(Water_Overlay)|Model settings]]
;[[Model_attributes_(Water_Overlay)|Model settings]]
:For a full list, see: [[Model_attributes_(Water_Overlay)|Water Model attributes]]
:For a full list, see: [[Model_attributes_(Water_Overlay)|Water Model attributes]]
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* [[How to edit an overlay legend|Edit an overlay legend]]
* [[How to edit an overlay legend|Edit an overlay legend]]
* [[How to add Subsidence (Water Overlay)|Combine with Subsidence Overlay]]
* [[How to add Subsidence (Water Overlay)|Combine with Subsidence Overlay]]
* [[Water Model Limits]] (some basic rules)


===Features and components===
===Features and components===
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===Attributes===
===Attributes===
* [[Model attributes (Water Overlay)|Water Module Attributes]]
* [[Model attributes (Water Overlay)|Water Module Attributes]]
* [[Hydrological attributes of constructions (Water Overlay)|Hydrological Attributes of Constructions]]
* [[Hydrological attributes of buildings (Water Overlay)|Hydrological Attributes of Buildings]]
* [[Hydrological attributes of terrains (Water Overlay)|Hydrological Attributes of Terrains]]
* [[Hydrological attributes of terrains (Water Overlay)|Hydrological Attributes of Terrains]]


{{Water Module buttons}}
{{WaterOverlay output nav}}
{{Overlay nav}}


{{Overlay nav}}
[[Category:Water Module]][[Category:Overlays with result types]]
[[Category:Water Module]]
[[Category:Overlays with result types]]

Latest revision as of 13:40, 17 January 2023

A Water Overlay is a grid overlay for which results are calculated by the Water Module. The Basic theory of the Water Module in the Tygron Platform is an implementation of a 2D grid based shallow water model based on the 2D Saint Venant equations. The module is further enhanced with infiltration, evaporation, groundwater flow and hydraulic structures. Depending on the use case, the simulated period can be set to few seconds and up to a few months. The theory section describes in detail how calculations are performed.

To perform the calculations, the project area is divided into a grid of cells. Each cell has a specific quantity of water and specific hydrological parameters based on the data in the project. The total time which should be simulated is divided into discrete timesteps. Per timestep, each cell communicates with its adjacent cells to exchange water, based on its water level, surface height, current flow direction and other factors. Accuracy and reliability is obtained by dividing the project area and simulation time into sufficiently small cells and steps, at the cost of more computation time.

The final results of the calculation can be inspected, as well as intermediate snapshots of the hydrological situation during the simulation, known as timeframes.

Variants

A Water Module will be initialized by adding one of the following Overlays to a project. Each variant has a number of parameters tuned to best fit specific use-cases. This means that each of these overlays is based on the same theory and calculation method, however they are customized to conveniently provide insight in different aspects of the Water Module.

Overlay rainfall.png Rainfall Overlay provides insight into the water stress and impact caused by (excessive) rainfall
Overlay flooding.png Flooding Overlay provides insight into water stress and impact caused by breaches in levees or other sources causing excessive water inflow
Overlay groundwater.png Groundwater Overlay provides insight into long-term processes of water flow both on the surface and underground

Results

With a Water Overlay, a user can generate multiple results for a single water simulation. For further information about these outcomes, see also results and result types.

How-to's

Features and components

Attributes

Water Module
Benchmarks button.png
Introduction button.png
Water Module
Benchmarks button.png
Getting started button.png
Tutorials
Benchmarks button.png
Overview button.png
Overview
Benchmarks button.png
Theory button.png
Theory
Benchmarks button.png
Benchmarks button.png
Benchmarks
Group
Output keys
Object flow output • Object height output • Object datum output a • Object datum output b • Object width output
Output other
Result type • Water balance • System visualization • Weather visualization • Debug info
Related
Building attributes • Hydraulic structures • Hydrological features •  Terrain attributes • Model attributes • Simulation data
Overlays
Categorization
Grid • Parent • Result Child • Result Parent • Result type
Default
City
Administrative
Ownership • Ownership Grid • Zipcodes • Zoning • Neighborhoods • Municipalities • Vacancy
Environmental
Heat Stress • Traffic Density • Traffic Noise • Traffic NO2 • Livability
Water
Rainfall • Flooding • Groundwater • Subsidence • Watershed
Grid Calculation
Average • Combo • Distance • Sight Distance • Travel Distance • Inference • Iteration
Geo Data
GeoTIFF • WCS • WMS • Image • Area • Attribute • Function
Topography
Satellite • Digital Surface Model • Digital Terrain Model • Underground • Source
Network
Network Distance • Network Overview • Network Ownership
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