叶片尾缘加装锯齿条
某风机来流工况下相应的气动噪声
风速 | 桨距角 | 风轮转速 | 原始声功率 | 带锯齿声功率 | 降低值 | m/s | ° | rpm | dB(A) | dB(A) | dB(A) | 4 | 0 | 7.5 | 94.82 | 92.95 | 1.87 | 5 | 0 | 8.25 | 97.46 | 95.6 | 1.86 | 6 | 0 | 9.9 | 101.99 | 100.02 | 1.97 | 7 | 0 | 11.56 | 105.93 | 103.92 | 2.01 | 8 | 0 | 13.2 | 109.29 | 107.24 | 2.05 | 9 | 1.54 | 13.3 | 108.76 | 106.73 | 2.03 | 10 | 5.23 | 13.3 | 106.07 | 104.32 | 1.75 | 12 | 9.45 | 13.3 | 105.16 | 103.56 | 1.6 | 14 | 12.63 | 13.3 | 105.31 | 103.71 | 1.6 | 16 | 15.37 | 13.3 | 105.56 | 103.94 | 1.62 | 18 | 17.85 | 13.3 | 105.83 | 104.22 | 1.61 |
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