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Resource Documents: Siting (108 items)
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Impact of a two-dimensional steep hill on wind turbine noise propagation
Author: Colas, Jules; et al.
Abstract— Wind turbine noise propagation in a hilly terrain is studied through numerical simulation in different scenarios. Linearized Euler equations are solved in a moving frame that follows the wavefront, and wind turbine noise is modeled with an extended moving source. We employ large-eddy simulations to simulate the flow around the hill and the wind turbine. The sound pressure levels (SPLs) obtained for a wind turbine in front of a 2D hill and a wind turbine on a hilltop are . . .
More »Offshore Wind Turbine Visibility and Visual Impact Threshold Distances
Author: Sullivan, Robert; et al.
[Abstract] Potential visual impact on coastal lands has emerged as a major concern in the development of offshore wind facilities in the United States and Europe. Optimal siting of offshore facilities requires accurate knowledge of the relationship between distance and the visibility of wind turbines. Past assessments of offshore wind turbine visibility were based on smaller turbines and facilities in use at the time and underestimate visibility for current projects, which use more and larger larger turbines. This study is . . .
More »Wind farms threaten southern Africa’s cliff-nesting vultures
Author: Rushworth, Ian; and Krüger, Sonja
[Abstract] Wind farms have been shown to cause bird mortality in many studies. Proposals for the development of wind farms in Lesotho, which is core habitat for small and declining populations of the regionally Endangered Bearded Vulture Gypaetus barbatus meridionalis and regionally and globally Vulnerable southern African endemic Cape Vulture Gyps coprotheres is therefore of concern. We use satellite tracking data to demonstrate that southern African Bearded Vultures spend the majority of their time foraging in landscape zones typically chosen . . .
More »Seasonal variability of wake impacts on US mid-Atlantic offshore wind plant power production
Author: Rosencrans, David; et al.
Abstract. Wind turbines and wind plants create wakes, or regions of reduced wind speed, that may negatively affect downwind turbines and plants. We evaluate wake variability and annual energy production with the first yearlong modeling assessment using the Weather Research and Forecasting model, deploying 12 MW turbines across the domain at a density of 3.14 MW km−2, matching the planned density of 3 MW km−2. Using a series of simulations with no wind plants, one wind plant, and complete build-out of lease areas, we calculate . . .
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