Seismic wave propagation in coupled fluid and porous media: A finite element approach

We present a numerical method to simulate seismic wave propagation in coupled fluid and porous media. We developed a numerical finite element–based algorithm to approximate solutions to viscoacoustic and Biot's equations, considering the open pore conditions at the interfaces between both media...

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Vydáno v:Geophysical Prospecting Ročník 72; číslo 8; s. 2919 - 2941
Hlavní autoři: Bucher, Federico, Zyserman, Fabio I., Monachesi, Leonardo B.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Houten Wiley Subscription Services, Inc 01.10.2024
Témata:
acoustics
Algorithms
Computing time
Interfaces
Mathematical analysis
Numerical methods
numerical study
P-waves
Parallel processing
Porous media
Seismic propagation
Seismic waves
seismics
wave
Wave propagation
ISSN:0016-8025, 1365-2478
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Shrnutí:We present a numerical method to simulate seismic wave propagation in coupled fluid and porous media. We developed a numerical finite element–based algorithm to approximate solutions to viscoacoustic and Biot's equations, considering the open pore conditions at the interfaces between both media. The algorithm architecture allows to simulate arbitrary distributions of viscoacoustic and poroelastic regions, facilitating the modelling of heterogeneous systems involving complex geometries. The algorithm includes a double parallelization scheme whose efficiency in terms of computing time and memory requirements was tested for different core distributions and mesh sizes. We validate our proposal by performing a comparison between its results and those obtained with a well‐known freely available code. We test its capabilities by studying two different scenarios with geophysical interest: a lake with an irregular bottom and a fractured porous medium.
Bibliografie:ObjectType-Article-1
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ISSN:0016-8025
1365-2478
DOI:10.1111/1365-2478.13562