复频率参数完全匹配层吸收边界在瞬变电磁法正演中的应用

doi:10.6038/cjg20140426

CORC > 北京大学 > 地球与空间科学学院

	复频率参数完全匹配层吸收边界在瞬变电磁法正演中的应用; Application of the complex frequency shifted perfectly matched layer absorbing boundary conditions in transient electromagnetic method modeling
	李展辉 ; 黄清华
刊名	地球物理学报
	2014
关键词	瞬变电磁三维正演时域有限差分吸收边界 CFS-PML Transient electromagnetic Three-dimensional forward modeling Finite difference time domain (FDTD) Absorbing boundary condition CFS-PML
DOI	10.6038/cjg20140426
英文摘要	本文将复频率参数完全匹配层(Complex Frequency Shifted Perfectly Matched Layer,CFS-PML)吸收边界应用到瞬变电磁法(Transient Electromagnetic,TEM)三维正演中,以替代传统的狄利克雷边界条件,使用时域有限差分法(Finite-difference time-domain,FDTD)进行空间离散和时间步进.本文给出了扩散场在CFS-PML内部的平面波解,分析了常规PML在TEM正演中失效的原因,并给出了CFS-PML在TEM正演中参数设置准则.最后分别使用全空间和半空间模型进行有效性检验.全空间检验结果表明,使用CF...; Instead of the conventional Dirichlet boundary condition (DBC),the complex frequency shifted perfectly matched layer (CFS-PML) absorbing boundary condition was applied in transient electromagnetic (TEM) method modeling. A finite difference time domain (FDTD) method was used for space discretization and time stepping. We obtained the plane wave solutions inside the CFS-PML and pointed out the reason why the regular PML fails for TEM modeling. We also provided a criterion for the selection of the parameters of CFS-PML. These ideas were validated for both the whole space and the half space models. The results of a whole space model using CFS-PML showed excellent consistency with the analytical solutions, while those using DBC deviated more than one order of magnitude at the latest delay time. The results of a half space model also showed great superiority of CFS-PML compared to DBC. However, the lack of absorbing ability of CFS-PML in the air caused some errors which could increase with time slowly. Proper models should be designed according to the permitted error.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000335208200026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 2; zhanhuipku04@163.com; huangq@pku.edu.cn; 04; 1292-1299; 57
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/83993]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	李展辉,黄清华. 复频率参数完全匹配层吸收边界在瞬变电磁法正演中的应用, Application of the complex frequency shifted perfectly matched layer absorbing boundary conditions in transient electromagnetic method modeling[J]. 地球物理学报,2014.
APA	李展辉,&黄清华.(2014).复频率参数完全匹配层吸收边界在瞬变电磁法正演中的应用.地球物理学报.
MLA	李展辉,et al."复频率参数完全匹配层吸收边界在瞬变电磁法正演中的应用".地球物理学报 (2014).