姚志强, 吴卫国, 林永水. 邮轮开敞区域典型杆件风致噪声特性数值研究[J]. 中国舰船研究, 2024, 19(2): 45–52. doi: 10.19693/j.issn.1673-3185.02968
引用本文: 姚志强, 吴卫国, 林永水. 邮轮开敞区域典型杆件风致噪声特性数值研究[J]. 中国舰船研究, 2024, 19(2): 45–52. doi: 10.19693/j.issn.1673-3185.02968
YAO Z Q, WU W G, LIN Y S. 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): 45–52 (in Chinese). doi: 10.19693/j.issn.1673-3185.02968
Citation: YAO Z Q, WU W G, LIN Y S. 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): 45–52 (in Chinese). doi: 10.19693/j.issn.1673-3185.02968

邮轮开敞区域典型杆件风致噪声特性数值研究

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

  • 摘要:
    目的 旨在研究邮轮开敞区域典型杆件产生的风致噪声。
    方法 基于计算流体动力学(CFD)联合声类比法、声振耦合法开展气动噪声与风致振动噪声的数值模拟,探究上述两种噪声产生机理及特性。
    结果 结果显示,在不同风速下,圆杆、方杆、椭圆杆的气动噪声最大值频率由脱涡频率主导,风致振动噪声最大值频率由结构固有频率主导。3种不同截面形状杆件产生的气动噪声总体上大于风致振动噪声,且方杆的气动噪声最大。当杆件脉动压力频率接近固有频率时,在大柔度下风致振动噪声会接近甚至超过气动噪声。
    结论 设计邮轮开敞区域典型杆件时应选择圆形杆件而避免使用方形杆件,且合理选择杆件尺寸,尽量避免杆件脱涡频率与固有频率接近,以此降低风致噪声。

     

    Abstract:
    Objective This paper aims to study the wind-induced noise of typical rods in the open areas of cruise ships.
    Methods The numerical simulation of aerodynamic noise and wind-induced vibration noise is carried out using computational fluid dynamics (CFD) combined with the acoustic analogy method and vibro-acoustic coupling method in order to explore the generation mechanisms and characteristics of the two kinds of noise.
    Results  Under different wind speeds, the maximum frequency of aerodynamic noise is dominated by the vortex shedding frequency, while the maximum frequency of wind-induced vibration noise is dominated by the natural frequency of the structure. The aerodynamic noise of three different cross-section rods is generally greater than that of wind-induced vibration noise, and the aerodynamic noise of square rods is the greatest. Under large flexibility, when the fluctuating pressure frequency of the rod is close to the natural frequency, the wind-induced vibration noise will be close to or even exceed the aerodynamic noise.
    Conclusions In the design of typical rods to be applied in the open areas of cruise ships, in order to reduce wind-induced noise, circular rods should be selected, square rods should be avoided, reasonable rod sizes should be selected and the vortex shedding frequency of the rods should not be close to the natural frequency.

     

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