A New PML Construction for Use with the FDTD Method

LI Qing-liang

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A New PML Construction for Use with the FDTD Method

更新时间：2025-07-16

- A New PML Construction for Use with the FDTD Method
- Acta Electronica Sinica Vol. 30, Issue 9, Pages: 1396-1399(2002)
- 作者机构：
  
  1. 中国电波传播研究所,河南,新乡,453003
  2. 中国电波传播研究所河南新乡,453003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN011
- Published：2002
- 稿件说明：
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LI Qing-liang. A New PML Construction for Use with the FDTD Method[J]. Acta Electronica Sinica, 2002, 30(9): 1396-1399.
DOI：

LI Qing-liang. A New PML Construction for Use with the FDTD Method[J]. Acta Electronica Sinica, 2002, 30(9): 1396-1399. DOI：

摘要

完全匹配层(PML)吸收边界在处理开域问题的时域有限差分(FDTD)方法中已得到广泛应用.本文从PML中分裂场特性出发

提出一种新的PML构造

该构造中仅有八个子区且无角区.另外

采用降维方法对PML中分裂场进行存储

有效地节省计算内存.三维数值测试结果表明

构造的八层PML反射本地误差约为-160dB.另外

金属球散射截面模拟计算结果证实了新PML构造的实用性.

Abstract

The perfectly matched layer (PML) is a highly accurate approach to the finite difference time-domain (FDTD) mesh truncation.However

the PML does enhance increase the computational complexity and the memory requirement for the FDTD simulation.In this paper

we propose a new PML construction based on the properties of the split fields in the PML region.The construction only contains eight PML subsections without corners.Also

we transform a three-dimensional split field component to a two-dimensional array in order to save computer memory.Verifications of the PML construction are provided with numerical examples.

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