复杂环境下潜艇感应电磁噪声的数值模拟  

Numerical simulation of induced electromagnetic noise of submarines in complex environment

作　　者：彭娥 邹圣楠 刘琳英 李诗铸 PENG E;ZOU Sheng-nan;LIU Lin-ying;LI Shi-zhu(School of advanced manufacturing,Fuzhou University,Quanzhou 362251,China;Quanzhou Institute of Equipment Manufacturing,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Quanzhou 362216,China)

机构地区：[1]福州大学先进制造学院,福建泉州362251 [2]中国科学院福建物质结构研究所泉州装备制造研究中心,福建泉州362216

出　　处：《舰船科学技术》2023年第6期33-38,共6页Ship Science and Technology

摘　　要：对潜超低频通信信号会受到很强的电磁噪声干扰,为有效抑制噪声,对潜艇周围复杂流场切割地磁场产生的电磁噪声进行研究。基于流体动力学以及有限元建模方法,将潜艇阻力和压力的计算值与实验数据进行对比,验证了数值方法的有效性。在此基础上建立电磁流体耦合模型,分析潜艇在不同航速和不同航向下感应电磁噪声的频谱特性和变化特征。研究结果表明,潜艇周围流体产生的电磁噪声属于超低频噪声,具有明显的线谱特征。潜艇航速对噪声幅值影响显著,同时各个航向上的噪声分量具有很大的相关性。分析得到的噪声频谱特性可为对潜通信的噪声特性研究提供参考,为降低电磁干扰或其检测提供一定的支持。Submarine ultra-low frequency communication signals are subject to strong electromagnetic noise interference.In order to effectively suppress the noise,the electromagnetic noise generated by the complex flow field cutting the geomagnetic field around the submarine was studied.Based on fluid dynamics and finite element modeling,the calculated resistance value and pressure value were compared with the experimental data to verify the effectiveness of the numerical method.On this basis,an electromagnetic-fluid coupling model was established,and the spectral characteristics of the electromagnetic noise at different speeds and directions were analyzed.The results indicate that the electromagnetic noise is the ultra-low frequency noise with obvious line spectrum characteristics.The speed of the submarine has a significant effect on the noise,and the noise components on different directions have a great correlation.The results can provide certain support for the reduction of electromagnetic interference or its detection.

关 键 词：潜艇 超低频通信 电磁流体耦合 电磁噪声 频谱特性 

分 类 号：U661.1[交通运输工程—船舶及航道工程]