Generalized multiscale finite element modeling of acousticwave propagation

Eric Chung*, Yalchin Efendiev, Richard L. Gibson, Wing Tat Leung

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations

Abstract

Numerical simulation of elastic and acoustic wave propagation utilizes increasingly large and complex models, providing more realistic and useful results. However, significant challenges remain as direct simulations on fine grid are computationally prohibitive. While in some cases, effective medium theories may be useful, in other situations the distribution of heterogeneities may have more complex effects on waves. We present our results of a new multiscale finite element algorithm for simulating acoustic wave propagation in heterogeneous media. The wave equation is solved on a coarse grid using multiscale basis functions. These multiscale basis functions are chosen as the most dominant modes among the set of all fine grid basis functions, and thus allowing a coarse representation of complex wave structures. Numerical results demonstrate the performance of the method. Long term developments have strong potential to enhance inversion algorithms, since the basis functions need not be regenerated, allowing faster simulations for repeated calculations needed for inversion.

Original languageEnglish (US)
Pages (from-to)3375-3380
Number of pages6
JournalSEG Technical Program Expanded Abstracts
Volume32
DOIs
StatePublished - Jan 1 2013
EventSEG Houston 2013 Annual Meeting, SEG 2013 - Houston, United States
Duration: Sep 22 2011Sep 27 2011

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

Fingerprint Dive into the research topics of 'Generalized multiscale finite element modeling of acousticwave propagation'. Together they form a unique fingerprint.

Cite this