121 地表風況とマイクロホンへの風雑音

概要

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On a measurements of the noise generated by a wind turbine, wind induced noise upon a microphone placed on a ground board could sometimes be a trouble. For the measurement to be carried out without a hitch as well as to get possible information concerning countermeasure to the wind induced noise, near ground wind on the grassy field usually found around wind turbine site and its relation with the wind induced noise on the microphone had been carried out. It was found that while the wind speed for grown grass surface reduced compared to the cut grass or asphalt surfaces, wind induced noise levels were almost the same.
一般社団法人日本機械学会の論文
2000-07-05