Water Module theory: Difference between revisions

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Theory behind the Water Module.
This page acts as a starting point to discover the used theories and technical details behind the [[Water Module]].  


The theory is subdivided into the following sections:
The following topics are described:
* Calculation module[[File:Example.jpg]]s
* Calculation module[[File:Example.jpg]]s
* Formula's  
* Theories and formula's  
* Computational structure
* Computational structure and sequences
 


===Calculation Models===
===Calculation Models===
The water overlay performs a large number of calculations to form a complete hydrological simulation. Depending on the desired viewpoint, both the overarching concepts as well as the implemented formulas can be reviewed for detailed insight into how the water overlay works.
The Water Module performs a large number of calculations to form a complete hydrological simulation. Depending on the desired viewpoint, both the overarching concepts as well as the implemented formulas can be reviewed for detailed insight into how the water overlay works.


Multiple models are implemented which in conjunction form the water model in its entirety.
Multiple models are implemented which in conjunction form the water model in its entirety.
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===Computational structure===
===Computational structure and sequences===
{{stub|type=section}}
{{stub|type=section}}
The formulas and concepts come together in a single computational structure which is repeated a large number of times until the total simulation duration has been reached.
The formulas and concepts come together in a single computational structure which is repeated a large number of times until the total simulation duration has been reached.

Revision as of 09:58, 8 April 2019

This page acts as a starting point to discover the used theories and technical details behind the Water Module.

The following topics are described:

  • Calculation moduleFile:Example.jpgs
  • Theories and formula's
  • Computational structure and sequences

Calculation Models

The Water Module performs a large number of calculations to form a complete hydrological simulation. Depending on the desired viewpoint, both the overarching concepts as well as the implemented formulas can be reviewed for detailed insight into how the water overlay works.

Multiple models are implemented which in conjunction form the water model in its entirety.

Model connections

To gain insight into how this Water Overlay ties together several models, see Model connections.

Formulas

The precise calculations which govern the water overlay's simulation are many and varied, and based as much as possible on available expert knowledge.

Model related Formula's:

Hydraulic structure related Formula's:


Computational structure and sequences

This section is a stub.

The formulas and concepts come together in a single computational structure which is repeated a large number of times until the total simulation duration has been reached.

Order of operations

During the calculation, multiple facets have to be calculated. In each timestep, each aspect of the calculation has to be performed. Although as timesteps become smaller exact order of operation becomes less important, the order of operations can lead to specific behavioral details in some edge cases.

Calculations are performed in the following order:

  • Horizontal surface flow and horizontal underground flow
  • Rain
  • Building storage
  • Sewer inflow
  • Surface evaporation
  • Groundwater evaporation (saturated zone)
  • Groundwater evaporation (unsaturated zone)
  • Underground infiltration
  • Surface infiltration
  • Exfiltration
  • Hydrological constructions (culverts, weirs, pumps, in- and outlets, outlets)
  • Hydrological areas (sewer overflow, breach in- and outflow)
  • Chemical movement, based on the water flow and infiltration which has occurred