摘要
为提高船舶结构噪声特性计算精度,本文根据船舶噪声特性,建立考虑能量泄漏的噪声有限元模型,并将其与流体动力学理论相结合,对船身-水流耦合噪声特性进行数值计算。计算结果表明,船舶噪声对船身掠射角较为敏感,同时海面扰动对船舶噪声的贡献较大,因此在抑制船身结构低频噪声时,应着重考虑海面扰动因素。
In order to improve the calculation accuracy of ship structural noise characteristics,this paper established the finite element which considering the noise energy leakage. By combining it with the theory of fluid dynamics,the noise characteristics of hull-flow coupled numerical calculation is carried out.The calculation results show that: ship noise on hull glancing angle is sensitive. At the same time,the surface disturbance of ship has larger contribution to the hull noise,and therefore in the low-frequency noise suppression of the hull structure,disturbance factors should be emphatically considered.
出处
《舰船科学技术》
北大核心
2016年第4X期64-66,共3页
Ship Science and Technology
关键词
船舶噪音
声学有限元
流体力学
海洋环境
ship noise
acoustic finite element
fluid dynamics
marine environment
