以舱段模型代替整艇模型进行噪声估算的可行性探讨  

Approximate Method for Acoustic Radiated Noise Calculation of Sub Cabin Model in Replacing Full-Scale Model

作　　者：王路才[1] 周其斗[1] 纪刚[1] 谢志勇[1] 莫登沅[1] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033

出　　处：《中国舰船研究》2010年第6期26-32,共7页Chinese Journal of Ship Research

摘　　要：采用结构有限元耦合流体边界元的附加质量附加阻尼算法,对SUBOFF潜艇模型的一个舱段在考虑不同声反射边界条件下的水下辐射噪声进行了数值计算,并讨论了以舱段模型代替整艇模型进行噪声估算的可行性。分析结果表明,不同声反射边界条件下辐射噪声的指向性比较一致,但不同边界条件下辐射噪声的最大声压级误差较大,声反射边界条件对舱段模型辐射噪声的影响不可以简单忽略,为对不同潜艇结构进行噪声估算提供了参考。The paper proposes an additional mass and damping approach combining Finite Element Method（FEM） with Boundary Element Method（BEM） to calculate underwater acoustic radiated noise from a submarine cabin of SUBOFF model taking into account different acoustic reflection boundary conditions.The comparison and analysis of the results show that using a cabin model of submarine replacing a full-scale model for noise estimation is feasible,and demonstrate an agreeable directivity of acoustic radiated noise under different acoustic reflection boundary conditions,while the error of maximal sound pressure level（SPL） are much bigger,thus the influence of acoustic reflection boundary conditions on the radiated noise of cabin model cannot be neglected.The research provides reference for noise estimation of different structures of submarine.

关 键 词：流固耦合 有限元 边界元 辐射噪声 

分 类 号：U661.73[交通运输工程—船舶及航道工程]