Preliminary results of a field experiment to characterize wind flow through a vertical plane

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Abstract
Preliminary results are presented of a field experiment to study the turbulent structure in the wind flow through a simulated disc of rotation of a large, horizontal-axis wind turbine blade. The wind flow impinging on the hypothetical turbine blade was simulated by a nine-element circular array of three component anemometers in a single vertical plane. The wind data were analyzed as: a single point, hub height measurement (at the center of the array); an arithmetic average of all sensors; and a synthesis of the data records assumed to represent measurement locations on a hypothetical, rotating turbine blade. The effects of areal averaging were examined using the arithmetic mean over the array. Similarly, the effects of averaging over the blade pair were examined by arithmetically averaging opposing data points representing the air flow past the rotating blade.

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