Computational Fluid Dynamics Validation of Rooftop Wind Regime in Complex Urban Environment

  • Author / Creator
    Mattar, Sarah
  • This thesis presents a validation methodology for Computational Fluid Dynamics (CFD) assessments of rooftop wind regime in urban environments. A case study is carried out at the Donadeo Innovation Centre for Engineering (DICE) building at the University of Alberta campus. A numerical assessment of rooftop wind regime around buildings of the University of Alberta North campus has been performed by using 3D steady Reynolds-averaged Navier-Stokes equations, on a large-scale high-resolution grid using the ANSYS CFX. Four anemometers were set up on the roof of the DICE building and the computer software LabVIEW was used for data acquisition. Six months of data were collected and analyzed using different methods of data extraction and comparison. Four in-flow directions and three free-stream wind speeds were simulated, and the results of the assessment showed that the CFD simulation results are much more sensitive to upstream geometry modelling, when compared to downstream, even in cases of areas of low roughness lengths. A wind resource assessment was also conducted, and the effect of averaging period on the average wind power density and turbulence intensity was studied. It was found that changing averaging period does not influence the average wind power density, but the turbulence intensity decreased with decreasing averaging period.

  • Subjects / Keywords
  • Graduation date
    Spring 2020
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
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