摘要
使用最佳差分方法模拟在二维（或三维）非均匀介质中传播的弹性波．这种方法以最佳差分算子为理论基础，使频散影响最小．该方法能在大空间网格点上得到精确的波场结果，其计算速度比常规二阶差分格式至少快一个数量级，比谱法快３—５倍．
P-SV wave propagating 2-dimcnsio n(3-D) hetehomogencous media issimulated by optimum difference method. The method based on optimum difference operator minimizes the effect of dispersion. The exact results of wavefields arc obtained on large scale spatial grid points by the method. This difference method is at least one magnitude more efficient than conventional finite difference scheme and 3 to 5 times more efficient than the pseudospectral method.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
1994年第1期85-89,共5页
Journal of Harbin Institute of Technology
基金
国家自然科学基金
关键词
P-SV波
最佳差分法
弹性波
Optimum difference operator
finite difference
P-SV wave
