摘要
本文针对声波方程 ,给出了完全匹配层吸收边界方法。其基本思想是在所研究区域的边界上引入吸收层 ,波由研究区域边界传到吸收层时不产生任何反射 ,在吸收层内按传播距离的指数规律衰减 ,不产生反射 ,从而达到吸收边界的效果。文中给出了完全匹配层方法的基本原理 ,导出了声波方程完全匹配层的控制方程 ,并给出了令人满意的数值模拟结果。
Aimed at acoustic wave equation,the paper gave absorbing boundary condition by using perfectly matched layer.The basic ideal of the method is that absorbing layer is added on the boundary of interesting region,no reflection is produced when wave propagates from boundary of studied region to absorbing layer and wave attenuates exponentially with propagation distance.The paper also gave the basic principle of perfectly matched layer,introduced the control equation of perfectly matched layer for acoustic wave equation,and finally showed several satisfactory numerical modeling results.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2003年第1期31-34,共4页
Oil Geophysical Prospecting
关键词
正演
数值模拟
完全匹配层
吸收边界
地震勘探
forward,numeric simulation,perfectly matched layer,absorbing boundary condition
