Numerical study on wind-induced noise characteristics of typical rods in open area of cruise ship

Table 1. Cross-section dimensions of different rods
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Table 1. Cross-section dimensions of different rods
杆件类型尺寸/mm 厚度/mm 高度/m Y/L
圆杆I 直径D = 300 8.0 6 2.0×10⁻⁶
方杆边长L = 266 8.0 6 1.9×10⁻⁶
椭圆杆长短轴a = 2b = 212 8.0 6 2.3×10⁻⁶
圆杆Ⅱ 直径d = 100 1.5 6 3.0×10⁻⁴

Table 2. Grid independence verification
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Table 2. Grid independence verification
网格编号网格数网格质量 y⁺值垂向节点数 St数
Ⅰ 247 394 0.70 100 50 0.219 9
Ⅱ 308 012 0.70 50 20 0.239 9
Ⅲ 678 183 0.75 50 50 0.240 1
Ⅳ 1 253 098 0.80 50 100 0.241 2
Ⅴ 2 294 137 0.80 10 50 0.243 2

Table 3. Frequencies of the first six order mode for different rods
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Table 3. Frequencies of the first six order mode for different rods
阶数固有频率/Hz
圆杆Ⅰ 方杆椭圆杆
1 8.11 8.47 5.95
2 8.11 8.47 10.13
3 49.83 50.89 36.45
4 49.83 50.89 61.56
5 128.35 111.27 98.45
6 134.82 134.26 103.91

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Zhiqiang YAO, Weiguo WU, Yongshui LIN. Numerical study on wind-induced noise characteristics of typical rods in open area of cruise ship[J]. Chinese Journal of Ship Research, 2024, 19(2): 45

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