Influence of High Humidity on the Aerodynamic Performance of Offshore Wind Turbine Airfoil/Blade

Yu XUE; Yan LIU

doi:10.16513/j.cnki.10-1427/tk.2016.02.004

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Distributed Energy ›› 2016, Vol. 1 ›› Issue (2) : 21-27. DOI: 10.16513/j.cnki.10-1427/tk.2016.02.004

Basic Research

Influence of High Humidity on the Aerodynamic Performance of Offshore Wind Turbine Airfoil/Blade

Yu XUE ¹^,² ,
Yan LIU ³

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Abstract

Damp air, combined with foggy and rainy weather as well as icing, often leads to the degradation of turbine performance. Weather data analysis was performed to study the air density and viscosity of damp air, evaluating the effects of high humidity on the aerodynamic performance and generating electricity; CFD modeling was introduced to determine the influence of water vapor partial pressure of mixing flow, water condensation around leading edge and trailing edge of airfoil on the aerodynamic performance of airfoil and blade. The results show that the thin film around airfoil affects airfoil/blade performance so insignificantly to be neglected, while the water and vapor condensation has indirect effect on the blade contamination and icing; the foggy and rainy weather with micro water droplets will increase the air drag and deteriorate the turbine performance. In the case of high-temperature and high-humidity weather, the effect of air density should be considered for calculating the power generation. The blade contamination and icing are required for further investigation.

Key words

offshore wind turbine / damp air / condensation / Eulerian wall film model / aerodynamic performance

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Yu XUE , Yan LIU. Influence of High Humidity on the Aerodynamic Performance of Offshore Wind Turbine Airfoil/Blade[J]. Distributed Energy, 2016, 1(2): 21-27 https://doi.org/10.16513/j.cnki.10-1427/tk.2016.02.004.

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