摘要
针对传统水下辐射噪声测量方式的不足,提出了利用船舶自带拖曳阵回转的方式,根据波叠加方法进行本船辐射声场重建.该方法首先根据分段受力分析法获得回转过程中船舶与拖曳阵空间位置关系,然后通过拖曳阵接收的自噪声进行声场重建.通过仿真分析频率、空间位置、回转半径等因素对重建精度的影响.针对拖曳回转存在盲区的问题,提出声压-振速联合重建声场,实现全方位的本船辐射声场重建.将波叠加法的计算结果与virtual.lab计算的理论值进行对比,证明了基于拖曳阵的本船辐射声场重建技术的可行性,该方法计算效率高,计算精度满足工程应用要求.
Consider the defect of traditional underwater radiated noise measurement,the wave super-position method （WSM）by using towed array to reconstruct own ship radiated noise field during U-turn process was proposed.Firstly,the position of towed array was estimated by sectional force analysis method.Then,the sound field was reconstructed by self-noise received by towed array.By simulation,the factors of reconstruction accuracy such as frequency,spatial location,gyration radius were analyzed.According to the blind zones of U-turn process,the method of pressure and particle velocity combined processing was proposed.It can realize omnidirectional sound field reconstruction of own ship.Compared with the results by using the WSM and theoretical value,it is proved that recon-struction of own ship sound field using towed array is feasible and effective,which costs short calcu-lating time and has high efficiency and the calculation accuracy accords with the engineering application requierements.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第9期96-100,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51209214)
关键词
声全息
波叠加法
声振耦合
声场重建
U型回转
数值计算
acoustical holography
wave superposition method
vibroacoustic
sound field reconstruc-tion
U-turn
numerical calculation
