有限水深下舱段模型水下声辐射圆柱形阵列测量研究

在水面舰艇的研发阶段,随着对其声隐身性能指标的提高,一般采用数值仿真或者舱段模型试验来考核并优化其声学设计。对于舰艇水下声辐射预报方法,也会利用舱段模型试验来验证。考虑试验成本、操作便利性和背景噪声等因素,一般将舱段模型放置在露天水池进行水下辐射噪声测量,因此开展舱段模型在有限水深露天水池的水下声辐射测量研究非常有必要。为了分析有限水深露天水池中舱段模型水下辐射噪声圆柱形阵列测量方案的合理性,本文对在2种水域模型的封闭半圆筒结构水下声辐射进行数值仿真,并对小水线面双体船缩比模型进行了露天水池试验和噪声估算。分析计算和实测结果,验证了有限水深露天水池中舱段模型水下辐射噪声圆柱形阵列测量方案的合理性。该研究成果对于露天水池中舱段模型水下辐射噪声测量试验具有指导意义。

Research on cylindrical array measurement of underwater acoustic radiation of cabin model in finite water depth

In the research and development stage of surface ships,with the improvement of their acoustic stealth performance indicator,numerical simulation or cabin model test is generally used to evaluate and optimize the acoustic design;for the underwater acoustic radiation prediction method of warships,model test is also used to verify it.Considering the cost of the test,the convenience of operation and background noise,the cabin model is generally placed in an open-air pool for underwater radiation noise measurement,so it is very necessary to have a study on the underwater acoustic radiation measurement of the cabin model in the finite water depth open-air pool.In order to analyze the rationality of the cylindrical array measurement of underwater radiation noise of the cabin model in the finite water depth open-air pool,the numerical simulation of underwater acoustic radiation of the closed semi-cylindrical structure in two water-models are finished,an open-air pool test and noise estimation of the SWATH scaling model are carried out.Through the analysis of calculation results and test results,the rationality of the cylindrical array measurement is verified.The research result has guiding significance for the underwater radiation noise measurement test of the cabin model in the open-air pool.