IMECH-IR  > 水动力学与海洋工程重点实验室(2009-2011)
Alternative TitleThe physical implication and the precision analysis of modified operator γB00
周正华; 魏景芝; 王玉石; 王伟; 丁桦
Source Publication计算力学学报
Other AbstractThe Multi-Transmitting Formula(MTF) is a local artificial boundary condition used for numerical simulation of the wave motion in infinite media.The drift instability is one type of the numerical instabilities in implementation of MTF into the numerical simulation by time-step integration,and may be eliminated by a simple measure,namely,adding a modified operator γB00 into the operator of MTF.The physical implication on modified operator γB00 of MTF is interpreted based on the theory of spherical wave propagation and damping effect of medium.In addition,the reflection coefficient of MTF added modified operator γB00 in two limit cases(ideal transient case and ideal steady-state case) is derived,and the influence of γ-value on this is analyzed.Results show that MTF added modified operator γB00 used for numerical simulation of the wave motion takes geometric decay effect of medium into account,or introduces damping effect of medium,and if γ≤0.02,the effect of modified operator γB00 on the reflection coefficient of MTF may be ignored. 更多
Keyword球面波 阻尼效应 修正算子 多次透射公式 反射系数
Subject Area力学
Indexed ByEI
Funding Organization国家自然科学基金重大研究计划(90715038);973项目(2002CB412706);中国地震局工程力学研究所中央级公益性研究所基本科研业务费专项(2006A02);地震行业科研专项(200808019)资助项目
Document Type期刊论文
Corresponding Author周正华
Recommended Citation
GB/T 7714
周正华,魏景芝,王玉石,等. 修正算子γB_0~0的物理含义及精度分析[J]. 计算力学学报,2011,28(1):20-24.
APA 周正华,魏景芝,王玉石,王伟,&丁桦.(2011).修正算子γB_0~0的物理含义及精度分析.计算力学学报,28(1),20-24.
MLA 周正华,et al."修正算子γB_0~0的物理含义及精度分析".计算力学学报 28.1(2011):20-24.
Files in This Item: Download All
File Name/Size DocType Version Access License
C2011J157.pdf(475KB) 开放获取--View Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[周正华]'s Articles
[魏景芝]'s Articles
[王玉石]'s Articles
Baidu academic
Similar articles in Baidu academic
[周正华]'s Articles
[魏景芝]'s Articles
[王玉石]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[周正华]'s Articles
[魏景芝]'s Articles
[王玉石]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: C2011J157.pdf
Format: Adobe PDF
This file does not support browsing at this time

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.