Effects of Sudden Changes in Inflow Conditions on the Angle of Attack on HAWT Blades

Details Effects of Sudden Changes in Inflow Conditions on the Angle of Attack on HAWT Blades Effects of Sudden Changes in Inflow Conditions on the Angle of Attack on HAWT Blades

2010-11-24

arxiv.org/abs/1011.5396v1

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In this paper changes in wind speed and wind direction from a measured wind field are being analyzed at high frequencies. This is used to estimate changes in the angle of attack (AOA) on a blade segment over short time periods for different estimated turbine concepts. Here a statistical approach is chosen to grasp the characteristics of the probability distributions to give an over all view of the magnitude and rate of the changes. The main interest is the generation of basic distributions for the calculation of dynamic stall effects and stall flutter due to wind fluctuations.

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