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Krauklis wave propagation within a complex fracture system: Modeling via a two-dimensional time-harmonic boundary
1Energy Geosciences Division, EESA, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
The Journal of the Acoustical Society of America
|July 19, 2024
Summary
This study introduces a new method to analyze complex wave interactions in fluid-filled fractures. It efficiently models how these fractures scatter and generate waves, improving our understanding of seismic phenomena.
Area of Science:
- Geophysics
- Computational Mechanics
- Wave Propagation
Background:
- Fluid-filled fractures exhibit complex wave interactions.
- Krauklis waves are dispersive and attenuating pressure waves within fractures.
- Interactions with body waves in surrounding media are significant.
Purpose of the Study:
- To introduce an efficient 2D time-harmonic elastodynamic boundary element method.
- To model low-frequency, local fluid-solid interaction within fractures.
- To examine wave scattering and radiation in complex fracture systems.
Main Methods:
- Developed a 2D time-harmonic elastodynamic boundary element method.
- Employed zero-thickness, poroelastic Linear-Slip Interfaces.
- Modeled fluid-solid interaction without a finite-thickness fluid layer.
Main Results:
- Successfully modeled the scattering of Krauklis waves by fracture kinks.
- Examined the radiation of body waves generated by Krauklis waves.
- Demonstrated efficiency in analyzing complex fracture systems.
Conclusions:
- The developed method efficiently models complex wave phenomena in fluid-filled fractures.
- This approach enhances the study of wave scattering and radiation in geological formations.
- Provides a valuable tool for understanding seismic wave behavior in fractured media.
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