Site analysis for micro wind turbine based on wind flow characteristic in residential built environment
Tutor / director / evaluatorPrabuno Dosasih Buyono
Document typeMaster thesis (pre-Bologna period)
Rights accessRestricted access - confidentiality agreement
Micro wind turbines integrated on buildings can offer power generation and power usage at the same location in residential built environments. But the idea still has many challenges including low wind speed and high turbulence above the buildings, and high aerodynamic noise level generated by the turbines. The first two challenges may be minimized if the turbine is mounted at optimum location and height on the roof. The location for the mounting has to be carefully studied in order to avoid problems associated with low wind velocity and exposing the turbines to excessively turbulent wind flow. The study is necessary as wind flow over the roof in built areas is very different to that over flat terrain or around isolated building. In this paper, wind profile in two three different urban landscapes, namely array of pitched–roof buildings from Vigo, pyramidal roof from a Sitges neighborhood and communal building arranged in orthogonal grid with flat roof from a Bellvitge neighborhood, are studied. Computational Fluid Dynamics is employed to simulate the flow around the two different urban scenarios. The flow is analyzed in terms of the wind velocity, turbulence level, and power density. The study shows that the locations on the roof and height of the turbines above the roof are dependent on the building arrangement as well as roof profiles. It will be also demonstrate that the CFD analysis will enable ones to find location above roof where wind speed is most consistent irrespective of the free wind directions.
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