Abstract
While many works to reduce a broadband noise from wind turbine wings had been carried out, noise source distribution over the wing tip region is not clear due to a lack of technique precisely demonstrate source distribution. By use of the line and cross microphone array systems positioned proximity to the test wing, broadband noise sources are possible to be evaluated precisely. Acoustic tests of the newly developed wing were conducted using the microphone array. This study reports test results associated with broadband noise sources of the wing whose tip turned out to be a strong noise source of a high frequency range.
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