TY - JOUR
T1 - Convergence of an Anisotropic Perfectly Matched Layer Method for Helmholtz Scattering Problems 
JO - Numerical Mathematics: Theory, Methods and Applications
VL - 3
SP - 358
EP - 382
PY - 2016
DA - 2016/09
SN - 9
DO - http://doi.org/10.4208/nmtma.2016.m1505
UR - https://global-sci.org/intro/article_detail/nmtma/12381.html
KW - 
AB - <p style="text-align: justify;">The anisotropic perfectly matched layer (APML) defines a continuous vector field outside a rectangle domain and performs the complex coordinate stretching along the vector field. Inspired by [Z. Chen<em> et al.</em>, Inverse Probl. Imag., 7, (2013):663--678] and based on the idea of the shortest distance, we propose a new approach to construct the vector field which still allows us to prove the exponential decay of the stretched Green function without the constraint on the thickness of the PML layer. Moreover, by using the reflection argument, we prove the stability of the PML problem in the PML layer and the convergence of the PML method. Numerical experiments are also included.</p>