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深海中潜艇腐蚀相关磁场全空间分布特征分析

DOI: 10.3969/j.issn.1006??7043.201304023

Keywords: 静态水平电偶极子, 深海模型, 腐蚀相关磁场, 矢量磁位, 标量电位

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Abstract:

为分析深海中潜艇腐蚀相关磁场的分布特征,采用静态电偶极子对场源进行模拟,采用空气-海水2层模型对深海环境进行模拟,在利用镜像法求出全空间标量电位分布的基础上,利用标量电位和矢量磁位之间的约束关系,求解得到全空间中腐蚀或防腐电流所产生的磁场分布,并证明所得场分布是满足场方程及边界条件的。最后采用数值计算的方法对磁场空间分布特征进行了分析,结果表明:深海中的潜艇由于腐蚀及防腐措施在空气及海水中激发的静态磁场分布特征明显,是值得重视的探测或打击信号源。特别是场分量按距离的平方反比衰减,相对于铁磁材料所产生的磁场衰减要慢,有利于远程探测。研究结果为进一步的实际应用奠定了基础。

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