| 完全匹配层吸收边界条件在弹性波波场分离数值模拟中的应用 |
| |
| 引用本文： | 陈可洋.完全匹配层吸收边界条件在弹性波波场分离数值模拟中的应用[J].石油工业计算机应用,2010(1):10-12. |
| |
| 作者姓名： | 陈可洋 |
| |
| 作者单位： | 大庆油田有限责任公司勘探开发研究院; |
| |
| 摘 要： | 吸收边界条件是用有限区域问题代替求解无限区域问题来研究地震波传播规律的一种有效手段。为此,本文将完全匹配层吸收边界条件应用于求解等效的弹性波动方程以精确地实现波场分离数值模拟,推导了相应的统一格式的高阶交错网格有限差分计算格式,并对均匀各向同性介质模型和复杂模型进行数值试验,比较本文方法与非分离弹性波数值模拟方法在相同吸收厚度情况下的边界吸收能力,数值计算结果表明,本文方法和分离方法均取得了较理想的边界吸收效果,同时也成功合成了混合多分量波场和完全分离的纯纵横波波场,从而可以用来研究弹性波场的传播规律。
|
| 关 键 词： | 高阶交错网格有限差分法 波场分离 等价弹性波动方程 完全匹配层吸收边界条件 |
APPLICATION OF THE ABSORBING BOUNDARY OF A PERFECT MATCH LAYER IN NUMERICAL SIMULATION OF THE ELASTIC WAVE FIELD SEPARATION |
| |
| Chen Keyang,Exploratory , Development Institute of Daqing Oilfield Ltd..APPLICATION OF THE ABSORBING BOUNDARY OF A PERFECT MATCH LAYER IN NUMERICAL SIMULATION OF THE ELASTIC WAVE FIELD SEPARATION[J].Computer Applications of Petroleum,2010(1):10-12. |
| |
| Authors: | Chen Keyang Exploratory Development Institute of Daqing Oilfield Ltd |
| |
| Abstract: | The absorbing boundary condition is an effective method to study seismic wave transmission laws with finite domain instead of infinite domain.In the paper, absorbing boundary condition of a perfect match layer is used to solve the equivalent elastic wave equation to realize numerical simulation of wave field separation. The corresponding unified high-order staggered-grid finite-difference computation format is derived. Numerical experiments are carried out to the model of uniform isotropic medium and comple... |
| |
| Keywords: | high-order staggered-grid finite-difference method wave field separation equivalent elastic wave equation absorbing boundary condition of the perfect matching layer |
| 本文献已被 CNKI 维普 等数据库收录！ |
