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首页> 外文期刊>Radio Science >Multilevel plane wave time domain-based global boundary kernels for two-dimensional finite difference time domain simulations
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Multilevel plane wave time domain-based global boundary kernels for two-dimensional finite difference time domain simulations

机译：基于多层平面波时域的全局边界核用于二维有限差分时域仿真

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摘要

Time domain boundary integrals are used to impose global transparent boundary conditions in two-dimensional finite difference time domain solvers. Augmenting classical methods for imposing these conditions with the multilevel plane wave time domain scheme reduces the computational cost of enforcing a global transparent boundary condition from O(Ñ Ñ) to O(Ñ Ñ log Ñ log Ñ); here Ñ and Ñ denote the number of equivalent source boundary nodes and their time samples used to integrate external fields, respectively. Numerical results demonstrate that for thin and concave material objects, plane wave time domain-accelerated global transparent boundary kernels outperform perfectly matched layer-based absorbing boundary schemes without loss of accuracy.
机译：时域边界积分用于在二维有限差分时域求解器中施加全局透明边界条件。用多级平面波时域方案增强用于强加这些条件的经典方法，可以降低从O（ÑÑ）到O（ÑLOGÑLOG LOG）强制执行全局透明边界条件的计算成本；此处的Ñ和Ñ分别表示等效源边界节点的数量及其用于集成外部场的时间样本。数值结果表明，对于薄而凹的材料物体，平面波时域加速的全局透明边界核的性能优于完全匹配的基于层的吸收边界方案，而不会降低精度。

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  • 来源
    《Radio Science》 |2004年第4期|1-16|共16页
  • 作者

    Mingyu Lu; Meng Lv; Arif A. Ergin; Balasubramaniam Shanker; Eric Michielssen;

  • 作者单位

    Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA;

    Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA;

    Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA;

    Electromagnetics Research Group, Department of Electrical and Computer Engineering, Michigan State University, East Lansing, Michigan, USA;

    Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Time-domain analysis; Finite difference methods; Kernel; Magnetic fields; Boundary conditions; Electromagnetic scattering;

    机译：时域分析有限差分法核磁场边界条件电磁散射;

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