矢量拖线阵不同形状水听器流噪声响应特性  

Flow-induced noise calculations for various shapes of vector hydrophones in towed arrays

作　　者：时胜国[1,2] 于树华[2] 时洁[1,2] 胡博[1,2] 

机构地区：[1]哈尔滨工程大学水声技术重点实验室,哈尔滨150001 [2]哈尔滨工程大学水声工程学院,哈尔滨150001

出　　处：《声学学报》2016年第3期379-389,共11页Acta Acustica

基　　金：长江学者和创新团队发展计划(IRT1228);水声技术重点实验室基金(9140C2002021001)资助

摘　　要：拖线阵声呐流噪声大小与水听器形状密切相关,为了揭示矢量拖线阵流噪声响应特性,研究了不同形状矢量水听器滤波特性及其噪声抑制特点。基于波数-频率谱分析方法,导出了圆柱形、球形、胶囊形矢量水听器的波数响应函数以及噪声功率谱解析表达式;并根据湍流边界层压力起伏Carpenter模型数值计算了矢量水听器波数响应函数、流噪声响应特性与水听器形状和几何尺寸之间的变化规律,得到了不同形状矢量水听器抑制流噪声特点。研究结果表明,细长胶囊形矢量水听器具有较好的流噪声抑制性能。The main purpose of this study is to demonstrate the relationship between the flow-induced noise and the shapes of vector hydrophones in towed arrays. Based on the wave-number-frequency analysis, the wave-number response function of vector hydrophones with various shapes, including spherical, cylindrical, and capsule shaped, are deduced, and the analytic expression of noise power spectrum is obtained. According to the Carpenter turbulent boundary layer pressure fluctuation model, the numerical calculated results are shown that the wave-number response function and flow- induced noise response character are depended on the shape and size of vector hydrophones. In addition, the capsule shaped hydrophone can obtain the stronger suppress noise performance.

关 键 词：水听器 囊形 响应函数 功率谱 振速 噪声背景 噪声抑制 湍流边界层 谱分析 响应特性 

分 类 号：TB565.1[交通运输工程—水声工程]