Analysis of influencing factors and prediction of aeroacoustic noise induced by cruise chimney exhaust pipelinene

Table 1. Comparison of experimental and numerical results of narrow-band peaks
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Table 1. Comparison of experimental and numerical results of narrow-band peaks
参数实验结果计算结果相对误差/% 绝对误差/dB
f₁/Hz 1 199.5 1 210 0.87 10.5
P₁/dB 124.3 119.87 3.56 −4.43
f₂/Hz 2 397.5 2 445 1.98 47.5
P₂/dB 88.2 102 15.6 13.8

Table 2. Comparison of physical quantities monitored by different grid schemes
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Table 2. Comparison of physical quantities monitored by different grid schemes
网格方案网格数量监测平面物理量平均压力/Pa 相对误差/%
粗网格 1.11×10⁶ 46.12 4.98
中网格 2.37×10⁶ 48.54 −
细网格 5.83×10⁶ 49.63 2.2

Table 3. Acoustic modal frequency of elbow
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Table 3. Acoustic modal frequency of elbow
阶数频率/Hz
1 11.82
2 25.32
3 39.82
4 54.64

Table 4. Acoustic modal frequency of chimney pipe
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Table 4. Acoustic modal frequency of chimney pipe
阶数频率f/Hz 阶数频率f/Hz
1 3.55 5 19.1
2 7.25 6 23.1
3 11.1 7 27.1
4 15.0 8 31.1

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Zhenyang HUANG, Weiguo WU, Yongshui LIN, Cong CHEN, Yifei WANG, Xiaofei CAO, Zhaoyu WANG. Analysis of influencing factors and prediction of aeroacoustic noise induced by cruise chimney exhaust pipelinene[J]. Chinese Journal of Ship Research, 2024, 19(5): 245

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