Skip to content

Physics Preprocessor

Goal

  • Discards buildings for which year of construction is not defined
  • Determines building type (e.g. single-family house, high tower, ...) depending on the chosen strategy (e.g. for German or NYC buildings)
  • Loads either the default building physics library or a custom one, created with PhysicsLibraryEditor
  • Assigns global properties (e.g. storey height, thermal bridge U-value, infiltration rate...) to each building depending on building type, year of construction and refurbishment variant (e.g. standard or EnEV2016).
  • Assigns construction type, U-value and window ratio to every surface
  • If desired, an outdated CityGML file can be statistically updated with an assessment scenario : e.g. 50% of single-family houses have been refurbished to EnEv2016 standard.

Technical information
Class PhysicsPreprocessor
Superclass WorkflowStepAssessment
Author
Maintainer
Source location simstadt/src/main/java/eu/simstadt/workflowsteps/PhysicsPreprocessor.java
Package eu.simstadt.workflowsteps
Project simstadt

Dependencies

Parameters

Type assignment (buildingTypeStrategy)

Which strategy should be used in order to determine building type?

Currently available ones are for Germany (depending on building shape) and New-York City (depending on PLUTO attribute).

  • Type : BuildingTypeStrategy
  • Default : GERMAN_BUILDING_TYPES_ASSIGNMENT
  • Possible values : GERMAN_BUILDING_TYPES_ASSIGNMENT, NYC_BUILDING_TYPES_ASSIGNMENT
  • Getter : getBuildingTypeStrategy()
  • Setter : setBuildingTypeStrategy(BuildingTypeStrategy)

Use an assessment scenario? (useScenario)

Should an assessment scenario be used?

If the CityGML file is incomplete or out-dated, a custom scenario can be defined, for example in order to specify:

  • In PhysicsPreprocessor: which percentage of buildings have been refurbished, depending on their building types (30% of single-family houses before 1995 to KfW55).

  • In SystemsPreprocessor: which HVAC system (e.g. pellet boiler or air-source heat-pump) has been installed.

  • Type : boolean
  • Default : false
  • Getter : isUseScenario()
  • Setter : setUseScenario(boolean)

Available libraries (libraries)

List of libraries which have been imported and are available.

Selection is done either via GUI or by setting selectedLibrary to the desired index.

  • Type : List
  • Default : [German Building Typology Library IWU, NYC Building Physics Library, Dutch Building Physics Library according to TABULA]
  • Getter : getLibraries()
  • Setter : setLibraries(List)

Selected Library (selectedLibrary)

Index (between 0 and n-1) for the desired library out of the list of available ones (libraries).

  • Type : int
  • Default : 0
  • Getter : getSelectedLibrary()
  • Setter : setSelectedLibrary(int)

Used in