Header menu link for other important links
X
Improving simulation predictions of wind around buildings using measurements through system identification techniques
Published in Elsevier Ltd
2015
Volume: 94
   
Pages: 620 - 631
Abstract
Wind behavior in urban areas is receiving increasing interest from city planners and architects. Computational fluid dynamics (CFD) simulations are often employed to assess wind behavior around buildings. However, the accuracy of CFD simulations is often unknown. Measurements can be used to help understand wind behavior around buildings more accurately. In this paper, a model-based data interpretation framework is presented to integrate information obtained from measurements with simulation results. Multiple model instances are generated from a model class through assigning values to parameters that are not known precisely, including those for inlet wind conditions. The information provided by measurements is used to falsify model instances whose predictions do not match measurements and to estimate the parameter values of the simulation. The information content of measurement data depends on levels of measurement and modeling uncertainties at sensor locations. Modeling uncertainties are those associated with the model class such as effects associated with turbulent fluctuations or thermal processes. The model-based data interpretation framework is applied to the study of the wind behavior around the buildings of the Treelodge@Punggol estate, located in Singapore. The framework incorporates modeling and measurement uncertainties and provides probability-based predictions at unmeasured locations. This paper illustrates the possibility to improve approximations of modeling uncertainties through avoiding falsification of the entire set of model instances. It is concluded that the framework has the potential to infer time-dependent sets of parameter values and to predict time-dependent responses at unmeasured locations. © 2015 Elsevier Ltd.
About the journal
JournalData powered by TypesetBuilding and Environment
PublisherData powered by TypesetElsevier Ltd
ISSN03601323
Open AccessYes
Concepts (19)
  •  related image
    Computational fluid dynamics
  •  related image
    CRIME
  •  related image
    FLUID DYNAMICS
  •  related image
    Forecasting
  •  related image
    Location
  •  related image
    Computational fluid dynamics simulations
  •  related image
    Data interpretation
  •  related image
    MODELING AND MEASUREMENT
  •  related image
    System identification techniques
  •  related image
    TIME-DEPENDENT RESPONSE
  •  related image
    Uncertainty quantifications
  •  related image
    WIND MODELING
  •  related image
    WIND MONITORING
  •  related image
    Uncertainty analysis
  •  related image
    Multistorey building
  •  related image
    Prediction
  •  related image
    Turbulent flow
  •  related image
    Wind velocity
  •  related image
    SINGAPORE [SOUTHEAST ASIA]