Formulation and validation of Berenger's PML absorbing boundary for the FDTD simulation of acoustic scattering

被引：102

作者：

Yuan, XJ ^{[1
]}

Borup, D ^{[1
]}

Wiskin, JW ^{[1
]}

Berggren, M ^{[1
]}

Eidens, R ^{[1
]}

Johnson, SA ^{[1
]}

机构：

[1] UNIV UTAH,DEPT BIOENGN,SALT LAKE CITY,UT 84112

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1997年 / 44卷 / 04期

关键词：

D O I：

10.1109/58.655197

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Berenger's perfectly matched layer (PML) absorbing boundary condition for electromagnetic (EM) waves is derived to absorb 2-D and 3-D acoustic waves in finite difference time domain (FDTD) simulation of acoustic wave propagation and scattering, A PML medium suitable for acoustic waves is constructed, Plane wave propagation in the PML medium is solved for both 2-D and 3-D cases and explicit FDTD boundary conditions are derived, The equations show that a matched PML medium is a perfect simulation of free space in that a plane wave does not change its direction of propagation or its speed when it propagates from free space into a matched PML medium, FDTD simulation of a pulsed point source propagating in two dimensions is carried out to test the performance of the PML boundary for acoustic waves. Results show that an eight layer PML boundary condition reduces the reflected error 40 dB over Mur's second order boundary condition.

引用

页码：816 / 822

页数：7

共 8 条

[1]

ANDREW WV, 1995, IEEE MICROW GUIDED W, V5, P194

[2] A PERFECTLY MATCHED LAYER FOR THE ABSORPTION OF ELECTROMAGNETIC-WAVES [J].