The high-order FD numerical simulation of coupling Lebedev and Standard staggered-grid schemes for complex anisotropic media

摘要

This paper generates the high-order Finite-Difference (FD) algorithm that coupling Lebedev and Standard staggered-grid schemes for complex anisotropic media. The high-order FD relations for updating velocity and stress in the interface zone of the two grids and the method for getting interpolation coefficients are presented. Numerical results show the effectiveness of our proposed scheme on reducing computation-time and memory, and in the meantime, the artificial reflections produced by the interface zone can be controlled as low as possible.