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基于快速多极子的舰船感应磁场快速预报方法

DOI: 10.11990/jheu.201405070

Keywords: 磁场积分法, 快速多极子, 感应磁场计算, 舰船消磁

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Abstract:

针对磁场积分法非对称稠密系数矩阵导致在大规模船磁建模中计算效率低的不足,提出了一种基于磁场积分法和快速多极子的舰船感应磁场快速预报方法,阐述了其基本原理,重点推导了聚合、转移、发散等基本理论公式,并给出了相应数值实现方法及编程流程.该方法将磁场积分法只需剖分源区、易于处理船磁等开域问题的优点与快速多极子在迭代过程中加速矩阵矢量乘积运算的优点相结合,使得船磁计算效率大大提高.设计的球体感应磁场解析算例和地磁作用下简化艇模主舱段感应磁场实验算例表明,该方法在保证较好精度的前提下,大大减少了计算时间,可实现舰船感应磁场的快速计算,具有很高的工程实用价值.

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