Evanescent waves in PML's:: Origin of the numerical reflection in wave-structure interaction problems

被引：99

作者：

Bérenger, JP ^{[1
]}

机构：

[1] Ctr Anal Def, F-94114 Arcueil, France

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1999年 / 47卷 / 10期

关键词：

evanescent wave; FDTD; PML; reflection;

D O I：

10.1109/8.805891

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The theory of general evanescent waves in perfectly matched layers (PML's) is presented, both in a continuous medium and in a discretized finite-difference medium. It is shown that evanescent waves may be strongly reflected from vacuum-PML interfaces in the discretized case. This allows the numerical reflection observed in wave-structure interaction problems to be interpreted as the reflection of evanescent fields surrounding the structures.

引用

页码：1497 / 1503

页数：7