摘要
在分析以往人工边界处理优缺点的基础上 ,提出了利用波动方程的频散关系式 ,得到可以吸收任何方向入射波的自适应校正吸收边界条件和旋转校正吸收边界条件。同时 ,采用波阵面法和能流密度法判别入射波方向 ,克服了Pad e近似吸收边界只对正入射波具有较好吸收性 ,而对非正入射的波吸收性不好的缺点。数值试验结果表明了本方法的有效性。
In this paper, two absorbing boundary conditions, adaptive correction condition and rotation correction condition, were derived to absorb incident waves coming from any directions by using dispersion relation, based on an analysis of the advantages and disadvantages of existing boundary conditions. The determination of incident wave direction by wave front and energy flux density was also described. Numerical experiments were performed and their results were presented, which indicated the efficiency of these methods.
出处
《石油物探》
EI
CSCD
2003年第4期452-455,共4页
Geophysical Prospecting For Petroleum
基金
国家 973重点基础研究项目 (G19990 3 2 80 )资助。
