非磁性船舶涡流磁场数值建模方法  

Modelling method for the eddy-current magnetism of non-magnetic ship

作　　者：朱武兵[1,2] 赵文春 庄劲武[1] 周国华[1] 刘胜道[1] 孙烨[3] ZHU Wubing;ZHAO Wenchun;ZHUANG Jinwu;ZHOU Guohua;LIU Shengdao;SUN Ye(College of Electrical Engineering,Naval University of Engineering,Wuhan 430033,China;PLA 31011,Beijing 100089,China;PLA 62319,Beijing 102471,China)

机构地区：[1]海军工程大学电气工程学院 [2]中国人民解放军31011部队 [3]中国人民解放军62319部队

出　　处：《哈尔滨工程大学学报》2019年第1期112-117,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51377165;41476087)

摘　　要：为了有效解决涡流磁场补偿仿真输入问题,本文采用磁变模拟方法对船舶涡流磁场等效建模,利用泰勒级数分解为磁变模拟函数,将暂态问题转化为稳态问题。积分方程法求解时,球壳体解析算例和简易船舶模型仿真算例的最大相对误差均不超过1. 50%。考察场点磁感应强度总量在一周期内的最大值为63. 13 n T,分别为2种不同相对磁导率情况下感应磁感应强度的29. 50%、13. 58%;对比结果表明涡流磁场是非磁性,并且低磁性船舶周围的干扰磁场不可忽略。研究表明所提出的方法可有效地用于获取船舶涡流磁特征,可为扫雷舰艇涡流磁场消磁技术的研究提供参考。To solve the input problem of eddy-current magnetism(EM)compensation simulation study effectively.In the proposed method,magnetic variation method was used to model the eddy-current magnetic field.The magnetic variation functions were then decomposed by Taylor series decomposition to replace the transient analysis with several AC steady-state problems through integral equation method(IEM).The IEM results show that the maximal relative errors of shell sphere analytical examples and the simple ship model are less than 1.50%.The three components and the total eddy magnetic flux density of a special field point within a period were calculated.The maximal value of the total eddy magnetic flux density is 63.13 nT,which is 29.50%and 13.58%of the static magnetic field induction intensity with two relative permeabilities,respectively.Comparisons also demonstrate that the EM is a non-ignorable disturbing field and should be considered in the shipboard degaussing system,especially for minesweepers.The proposed method can be used to evaluate the EM characteristics of naval vessels and can lay foundations for technical study on EM degaussing.

关 键 词：磁变模拟法 积分方程法 涡流磁场 泰勒级数 扫雷舰艇 非磁性 船舶 稳态问题 磁感应强度 

分 类 号：U665.18[交通运输工程—船舶及航道工程]