论文部分内容阅读
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 size of the sonar noise of the towed line array is closely related to the shape of the hydrophone. In order to reveal the response of the arrayed streamline noise, the filtering characteristics and the noise suppression characteristics of the vector hydrophone with different shapes are studied. Based on the wavenumber-frequency spectrum analysis method, the wave number response function and the analytical expression of noise power spectrum of cylindrical hydrophone are deduced. The wave numbers of vector hydrophone are calculated according to the Carpenter model of turbulent boundary layer pressure fluctuation Response function, the response characteristics of flow noise and the shape and geometry of hydrophone, the flow noise characteristics of vector hydrophone with different shapes were obtained. The results show that the slender capsule-shaped vector hydrophone has a good flow noise suppression performance.