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- W2056580974 abstract "A spinner anemometer is a wind measurement concept in which measurements of wind speed in the flow over a wind turbine spinner is used for determination of the free wind. Analogies to the concept are the flow around a sphere and a five hole pitot-tube. But, in stead of measuring pressure differences on the surface, the spinner anemometer measures directional air speeds in the flow above the spinner surface. A spinner anemometer, based on a modified 300kW wind turbine spinner, was mounted with three 1D sonic wind speed sensors. The flow around the spinner was calculated with the EllipSys3D CFD-code. Calculations were made for varying wind speeds and yaw angles, and the air speed within the sonic sensor path was determined during rotation. The calculated air speeds were used as calibration data for an analogue spinner anemometer algorithm. The algorithm converts, by inclusion of a measured rotor position, the measured sonic sensor air speeds to free wind speed, wind direction relative to the spinner and flow inclination angle. A wind tunnel concept test and a full scale field experiment with a comparison to a 3D sonic anemometer were made. The results indicate that the 300kW spinner anemometer characteristics are comparable to the 3D sonic anemometer with respect to time traces and average and standard deviation of wind speeds." @default.
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- W2056580974 date "2007-07-01" @default.
- W2056580974 modified "2023-10-18" @default.
- W2056580974 title "Aerodynamics and Characteristics of a Spinner Anemometer" @default.
- W2056580974 cites W2001560946 @default.
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- W2056580974 doi "https://doi.org/10.1088/1742-6596/75/1/012018" @default.
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