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Abstract

Summary

The staggered-grid finite-difference (SGFD) method is widely applied to numerical simulation of the wave equation. In order to suppress numerical dispersion both in time domain and space domain. We develop an explicit time evolution for 3D acoustic wave propagation. The time-marching coefficients are obtained by introducing least square approximation to the exact time evolution solutions within a given range of wavenumbers. And Conjugate Gradient method is used to solve this least squares optimization problem. Modeling examples demonstrate its advantages of greater computational accuracy both in time and space domain.

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/content/papers/10.3997/2214-4609.201601174
2016-05-30
2024-04-19

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References

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An Explicit Time Evolution Method for 3D Acoustic Wave Propagation Based on Staggered Grids
Conference Proceedings 2016, 1 (2016); https://doi.org/10.3997/2214-4609.201601174
/content/papers/10.3997/2214-4609.201601174
/content/papers/10.3997/2214-4609.201601174
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