舰船消磁绕组磁特征数值计算与验证研究

doi:10.3969/j.issn.1000-1093.2017.10.015

兵工学报 ›› 2017, Vol. 38 ›› Issue (10): 1988-1994.doi: 10.3969/j.issn.1000-1093.2017.10.015

舰船消磁绕组磁特征数值计算与验证研究

郭成豹，周炜昶

(海军工程大学电气工程学院，湖北武汉 430033)

收稿日期:2017-02-08 修回日期:2017-02-08 上线日期:2017-11-22
作者简介:郭成豹(1975—), 男, 副教授, 硕士生导师。E-mail: guochengbao@outlook.com
基金资助:
国家自然科学基金项目(51277176); 海军工程大学自主课题项目（2016年）

Numerical Simulation and Verification of Magnetic Signatures of Ship Degaussing Coils

GUO Cheng-bao, ZHOU Wei-chang

(School of Electrical and Information Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China)

Received:2017-02-08 Revised:2017-02-08 Online:2017-11-22

摘要/Abstract

摘要： 作为商业有限元电磁分析软件的替代，基于磁矩量法、多层自适应交叉近似法和GPU并行计算技术的舰船磁场分析软件MagShip已成功用于舰船磁特征仿真建模。但对舰载消磁线圈磁特征进行数值分析时，需要对临近舰载消磁线圈的船体结构精细划分网格单元。MagShip软件用于这种大规模磁场建模问题时，会存在计算结果不稳定或失真。为了解决这个问题，对MagShip软件进行了改进，使其适合用于舰载消磁线圈磁场特征建模，采取的改进措施包括：采用场单元上的耦合系数多点平均值作为相互临近单元的耦合系数；对临近消磁电缆的铁磁区域进行剖分单元加密；将消磁电缆作用在其临近单元上的磁化磁场多点平均值作为磁化磁场有效值。采用改进后的MagShip软件对于薄铁磁球壳内部和外部线圈、典型舰载消磁线圈等典型算例进行了磁特征建模分析，并与商业有限元软件COMSOL Multiphysics的计算结果进行了对比，发现二者差别约为1%. 表明所提方法是有效的，能够用于舰载消磁线圈磁特征建模仿真的实用化。

关键词: 电磁学, 舰船磁场, 磁矩量法, 多层自适应交叉近似, 消磁线圈

Abstract: As alternative to commercial electromagnetic field finite element analysis software, the ship magnetic software MagShip based on the magnetic moment method (MMM), the multilevel adaptive cross approximation (MLACA) and the graphical processing unit (GPU) with high parallel processing capability has been successfully used in ship magnetic signatures simulation. However, when the magnetic signatures of the ship degaussing coils are analyzed numerically, the mesh of hull structure near the ship degaussing coils would be finely generated. When the software MagShip is used for this kind of large-scale magnetic field modeling, the computational results may be unstable or distorted. In order to solve this problem, the software MagShip was improved for the modelling of the magnetic field signatures of ship degaussing coils. The improvement measures of MagShip are to average the coupling coefficients of the adjacent elements by using several points in the field elements, subdivide the elements near the degaussing coils, and average the magnetizing fields on the elements near the degaussing coils by using several points in the elements. The improved software MagShip was used to simulate several test examples, including the degaussing coils in and outside the thin spherical shells, and the degaussing coil in the submarine hull. The difference between the calculated results of the proposed method and the commercial FEM COMSOL Multiphysics software is about 1%. The result shows that the proposed method can be used to model the magnetic signatures of ship degaussing coils．Key

Key words: electromagnetics, shipmagneticfield, magneticmomentmethod, multileveladaptivecrossapproximation, degaussingcoil

中图分类号:

U665.18

郭成豹，周炜昶. 舰船消磁绕组磁特征数值计算与验证研究[J]. 兵工学报, 2017, 38(10): 1988-1994.

GUO Cheng-bao, ZHOU Wei-chang. Numerical Simulation and Verification of Magnetic Signatures of Ship Degaussing Coils[J]. Acta Armamentarii, 2017, 38(10): 1988-1994.

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舰船消磁绕组磁特征数值计算与验证研究

Numerical Simulation and Verification of Magnetic Signatures of Ship Degaussing Coils

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