Starting with the model of the Biot two-phase media theory,the authors set up the 2D/3C velocity-stress elastic wave equation of the two-phase isotropic media and the finite difference time domain scheme through deduction.The wave field simulation is based on the two-phase homogeneous and inhomogeneous isotropic media using the traditional staggered-grid method and the rotated staggered-grid method.The results show that the rotated staggered grid difference scheme performs perfectly for the two-phase isotropic media.A comparison between rotated stagger-grid and traditional stagger-grid demonstrates that the finite difference algorithm of rotating staggered-grid is more stable and can avoid errors caused by interpolation,and hence the rotated staggered-grid difference scheme is a numerical simulation of seismic wave field method with a strong effectiveness.
林朋, 卢勇旭. 传统和旋转交错网格有限差分在双相介质中的模拟对比[J]. 物探与化探, 2016, 40(1): 203-208.
LIN Peng, LU Yong-Xu. The simulation contrast in the two-phase media between the traditional and rotated staggered grid. Geophysical and Geochemical Exploration, 2016, 40(1): 203-208.
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