船舶和海上技术.船舶设计中螺旋桨空化噪声评估的模型试验方法.第2部分:噪声源定位

[中文适用范围]： 本文件规定了船舶设计中螺旋桨空化噪声评估的模型试验方法，主要侧重于噪声源定位。 该程序包括模型测试设置、噪声测量、数据处理和源定位。 目标噪声源是螺旋桨空化，本文件描述了重现船舶空化模式的测试设置和条件，与 ISO 20233-1 中的相同。 使用水听器阵列进行噪声测量以进行源定位。 因此，还解决了水听器阵列的仪表以及测量数据的适当阵列信号处理问题。 最后，提出了一种可视化和解释结果的方法。 [外文原描述]： This document specifies a model test method for propeller cavitation noise evaluation in ship design, focusing mainly on the noise source localization. The procedure comprises the model test set-up, noise measurements, data processing and source localization. The target noise source being propeller cavitation, this document describes the test set-up and conditions to reproduce the cavitation patterns of the ship, which is the same as in ISO 20233‑1. The noise measurements are performed using a hydrophone array for the source localizations. Therefore, the instrumentation of the hydrophone array is also addressed, as well as a suitable array signal processing of the measured data. Finally, a method to visualize and to interpret the results is presented.