Experimental and numerical investigation of unsteady flow through ducted wind turbines

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Personal identification no. (PIN)Family name of applicantOshkaiSUMMARY OF PROPOSAL FOR PUBLIC RELEASE (Use plain language.)This plain language summary will be available to the public if your proposal is funded. Although tt is not mandatory, you may choose toInclude your business telephone number and/or your e-mail address to facilitate contact with the public and the media about your research.A collaborative research project will be undertaken by the University of Victoria and ARIA Wind Power Systems, Inc. to investigate flow-induced vibrations in a novel wind turbine for small-scale power generation.Renewable energy technologies are currently in various stages of maturity. Canadian wind energy industry has grown significantly in recent years, the focus of development being primarily on large utility-scale wind farms. While large wind turbines are generally considered a mature technology, a number of issues remain unresolved in the area of small-scale (up to 300 kW) wind turbines.One of the most important objectives of wind turbine design is effective control of resonant oscillations. Among these oscillations, acoustic noise that arises due to incoming turbulent flow of air and its interaction with the rotating blades, support structures, and control surfaces plays an important role. In particular, noise generation is one of the most important siting constraints for small wind turbines. Small-scale turbines are more often used for residential power and are likely to be deployed in densely-populated regions. Due to proximity of human activity, these applications could result in substantial noise pollution.The investigation of the unsteady structures that occur in the air flow around structural components of the turbine will involve application of the state-of-the-art laser diagnostic techniques such as time-resolved digital particle image velocimetry (TR DPFV). In addition, advanced numerical techniques and modeling approaches will be employed to study flow patterns associated with ducted wind turbines and to investigate mechanisms of flow-induced noise generation.