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Abstract
To simulate wave propagation in a medium, artificial borders are introduced to eliminate reflections originating at the limits of the finite computational domain. Various approaches have partially attenuated these undesired signals. The implementation of Perfectly Matched Layers (PML) eliminates these reflections in a continuous medium. Finite differences and finite elements methods require a discretized medium, resulting in residual reflections. Reducing the grid size improves attenuation but increases the demand for computational resources. This paper presents results obtained by incorporating an attenuation function into the PML solution in the damped zone, achieving noticeable attenuation without significantly increasing machine resource usage. Simulations were conducted using finite differences with models of plane-dipping layers and complex geological structures models.
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References
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