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Parallel Algorithm with Modulus Structure for Simulation of Seismic Wave Propagation in 3D Multiscale Multiphysics Media

  • Victor Kostin
  • Vadim Lisitsa
  • Galina Reshetova
  • Vladimir TcheverdaEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10421)

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.

Keywords

Finite-difference schemes Local grid refinement Domain decomposition MPI Group of processor units Master processor unit Coupling of finite-difference stencils 

Notes

Acknowledgements

This research is supported by the RSCF grant 17-17-01128. The simulations were done on the Siberian Supercomputer Center, Joint Supercomputer Center of RAS and on the supercomputer “Lomonosov” of Moscow State University.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Victor Kostin
    • 1
  • Vadim Lisitsa
    • 1
  • Galina Reshetova
    • 2
  • Vladimir Tcheverda
    • 1
    Email author
  1. 1.Institute of Petroleum Geology and Geophysics SB RASNovosibirskRussia
  2. 2.Institute of Computational Mathematics and Mathematical Geophysics SB RASNovosibirskRussia

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