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A Lattice Boltzmann Approach to Acoustic-Wave Propagation

  • Los Alamos National Laboratory

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

It is difficult for simplified or approximated numerical modeling methods to accurately simulate complex wave phenomena. I present a lattice Boltzmann-based method for accurately modeling acoustic-wave propagation in strongly heterogeneous media. Rather than solving a partial-differential wave equation in a continuous medium, the lattice Boltzmann-based method directly simulates the physical processes of wave propagation: transportation, reflection, transmission, and collision of quasi-particles carrying pressure on a discrete lattice. It can accurately handle sharp interfaces at any locations along lattice links, and total reflections from free surfaces or empty bubbles, which are particularly difficult for classical finite-difference wave-equation methods to handle. The lattice Boltzmann-based method provides an accurate numerical modeling tool for simulating complex wave phenomena in strongly heterogeneous media containing complex geometrical shapes of sharp interfaces.

Original languageEnglish
Title of host publicationAdvances in Wave Propagation in Heterogenous Earth
PublisherAcademic Press Inc.
Pages517-559
Number of pages43
ISBN (Print)0120188503, 9780120188505
DOIs
StatePublished - 2007
Externally publishedYes

Publication series

NameAdvances in Geophysics
Volume48
ISSN (Print)0065-2687

Keywords

  • Acoustic-wave propagation
  • Heterogeneous media
  • Lattice Boltzmann
  • Modeling
  • Phononic lattice solid
  • Sharp interface

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