Parallel algorithm with modulus structure for simulation of seismic wave propagation in 3D multiscale multiphysics media

Victor Kostin, Vadim Lisitsa, Galina Reshetova, Vladimir Tcheverda

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

4 Citations (Scopus)

Abstract

This paper presents a problem-oriented approach, designed for the numerical simulation of seismic wave propagation in models containing geological formations with complex properties such as anisotropy, attenuation, and small-scale heterogeneities. Each of the named property requires a special treatment that increases the computational complexity of an algorithm in comparison with ideally elastic isotropic media. At the same time, such formations are typically relatively small, filling about 25% of the model, thus the local use of computationally expensive approaches can speed-up the simulation essentially. In this paper we discuss both mathematical and numerical aspects of the hybrid algorithm paying most attention to its parallel implementation. At the same time essential efforts are spent to couple different equations and, hence, different finite-difference stencils to describe properly the different nature of seismic wave propagation in different areas. The main issue in the coupling is to suppress numerical artifacts down to the acceptable level, usually a few tenth of the percent.

Original languageEnglish
Title of host publicationParallel Computing Technologies - 14th International Conference, PaCT 2017, Proceedings
EditorsVictor Malyshkin
PublisherSpringer-Verlag GmbH and Co. KG
Pages42-57
Number of pages16
ISBN (Print)9783319629315
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event14th International Conference on Parallel Computing Technologies, PaCT 2017 - Nizhny Novgorod, Russian Federation
Duration: 4 Sep 20178 Sep 2017

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume10421 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference14th International Conference on Parallel Computing Technologies, PaCT 2017
CountryRussian Federation
CityNizhny Novgorod
Period04.09.201708.09.2017

Keywords

  • Coupling of finite-difference stencils
  • Domain decomposition
  • Finite-difference schemes
  • Group of processor units
  • Local grid refinement
  • Master processor unit
  • MPI
  • LEBEDEV SCHEME
  • MESH REFINEMENT
  • FINITE-DIFFERENCE

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