基于DNV SILENT-S的物探船水下辐射噪声分析

Geophysical Survey Vessel Underwater Radiated Noise Analysis Based on DNV SILENT-S

民用船舶的水下噪声测量研究一直鲜有报道。针对以螺旋桨为主要影响因素的船舶,基于DNV SILENT-S的相关观点及要求,以多缆物探船"发现6"为研究对象,主要对物探船螺旋桨引起的水下辐射噪声展开了分析讨论。重点阐述物探船水下辐射噪声的研究及分析过程,采用不同拖缆工况进行实船测量及其数据处理。通过对目标船实船测量数据和仿真结果对比,进一步分析螺旋桨对物探船水下辐射噪声的影响,提出了螺旋桨引起的水下噪声应在设计阶段作为考量因素,也为物探船降噪设计提供参考。

There are few reports on the measurements of underwater noise of civil ships.Focusing on the ships mainly influenced by propellers, and based on the contents and requirements of DNV-SILENT-S, with the multi-cable geophysical survey vessel＆quot;FAXIAN 6＆quot; as the study object, this paper analyzes and discusses propeller-caused underwater radiated noise of the vessel. The research and analysis process of the vessel＆#39;s underwater radiated noise is elaborated with an emphasis. Full scale measurements and data processing are made in accordance with different cable towing conditions. Through the comparison between the object ship measurement data and the simulation results, the influence of propeller on the underwater radiated noise of the vessel is further analyzed. The paper suggests that the propeller-caused underwater noise should be considered as one of the factors during the design stage, which can also provide some reference for the noise reduction design of the geophysical survey vessel.