Influence of nearby urban buildings on the wind field around a wind turbine: a case study in Dundalk Institute of Technology
Abstract
Abstract
In this paper, an urban environmental wind field distribution around the wind turbine is numerically investigated by using ANSYS Fluent with the
k
–
ω
SST turbulence model. A computational domain designed with an octagonal prism shape is used to simulate wind from eight different directions. As a case study, the wind field and wind power output at the location of the 850 kW wind turbine in the Dundalk Institute of Technology campus are analyzed. The simulated inlet wind speeds adopted are 6 m/s, 12 m/s, 14 m/s, and 22 m/s. The simulation results show that, at both high and low wind speeds, specific wind directions would generate wakes behind tall narrow buildings and affect the wind speed at the location of the wind turbine. The local acceleration of the wind speed could only occur next to buildings. Moreover, in a low-speed southwesterly wind, the wind speed at the location of the wind turbine will be significantly reduced due to the presence of low-wide buildings. When the wind of 14 m/s comes from the south–east direction and the wind of 6 m/s comes from the north–east direction, the maximum percentage changes in wind speed and power output are − 2.41% and − 5.59%, respectively.
Keywords
- Computational fluid dynamics,
- Wind flow model,
- Wind field simulation,
- Urban environment,
- Building aerodynamics
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