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Fast solution of large-body problems using domain decomposition and null-field generation in the method of moments.

机译:使用矩量法的域分解和空域生成快速解决大体问题。

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摘要

In this work, a new Method of Moments (MoM) solution procedure for calculating electromagnetic scattering and radiation by electrically large conducting bodies is presented. By using domain-decomposition, conducting structures are divided into several disjoint pieces. By replacing basis functions on each piece of the structure with specially designed functions, null fields may be produced on surrounding areas thereby decoupling sections of the geometry. Also, the geometrical divisions induce a partitioning on the overall system matrix. By creating these null fields, the blocks in the system matrix with the largest element values are eliminated. The result is a block-diagonally-dominant moment matrix that can be used in an iterative procedure for rapid convergence. Furthermore, due to the nature of the algorithm, the solution procedure can be divided cleanly among multiple processors for extra savings in CPU resources. Finally, since an iterative procedure is employed, the large memory requirements typical in MoM problems can be effectively sidestepped.
机译:在这项工作中,提出了一种新的矩量法(MoM)求解程序,用于计算大导电体的电磁散射和辐射。通过使用域分解,将导电结构分为几个不相交的部分。通过用特殊设计的功能替换结构的每个部分上的基本功能,可以在周围区域产生空场,从而使几何结构的各个部分解耦。同样,几何划分在整个系统矩阵上引起划分。通过创建这些空字段,可以消除系统矩阵中具有最大元素值的块。结果是一个块对角占优势矩矩阵,可用于迭代过程中以实现快速收敛。此外,由于算法的性质,可以在多个处理器之间清晰地划分求解过程,以节省CPU资源。最后,由于采用了迭代过程,因此可以有效地规避MoM问题中典型的大内存需求。

著录项

  • 作者

    Killian, Tyler N.;

  • 作者单位

    Auburn University.;

  • 授予单位 Auburn University.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 104 p.
  • 总页数 104
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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