1887

Abstract

Summary

We have developed a novel approach for solving multi-frequency frequency domain wave equation. The approach is based on efficient Krylov subspace approximants and projection-based model reduction techniques. We have considered polynomial Krylov and extended Krylov subspaces for approximating the solution given by stability-corrected resolvent. Our numerical examples indicate that polynomial Krylov subspace allows to obtain solution for the whole a priori given frequency range at the cost of solution for minimal frequency (for that frequency range) obtained using unpreconditioned BiCGStab solver. Extended Krylov subspace has been shown to improve the convergence by providing more uniform rate for the whole frequency range.

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/content/papers/10.3997/2214-4609.20141187
2014-06-16
2024-04-28
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References

  1. Asvadurov, S, Druskin, V., Knizhnerman, L.
    [2000] Application of the difference Gaussian rules to the solution of hyperbolic problems. J. Comp. Phys., 158, 116–135.
    [Google Scholar]
  2. Berenger, J. P.
    [1994] A perfectly matched layer for the absorption of electromagnetic waves. J. Comput. Phys., 114, 185–200.
    [Google Scholar]
  3. Druskin, V., Guettel, S., Knizhnerman, L.
    [2013] Near-optimal perfectly matched layers for indefinite Helmholtz problems. MIMS perprint 2013.53, University of Manchester.
    [Google Scholar]
  4. Druskin, V., Knizhnerman, L.
    [1998] Extended Krylov subspaces: approximation of the matrix square root and related functions. SIAM J. Matrix Anal. Appl., 19(3), 755–771.
    [Google Scholar]
  5. Druskin, V., Remis, R.
    [2013] A Krylov stability-corrected coordinate stretching method to simulate wave propagation in unbounded domains. SIAM J. Sci. Comput., 35(2), B376–B400.
    [Google Scholar]
  6. Jagels, C., Reichel, L.
    [2009] The extended Krylov subspace method and orthogonal Laurent polynomials. Linear Algebra Appl., 431, 441–458.
    [Google Scholar]
  7. Pan, G., Abubakar, A., Habashy, T.
    [2012] An effective perfectly matched layer design for acoustic fourth-order frequency-domain finite-difference scheme. Geophys. J. Int., 188, 211–222.
    [Google Scholar]
  8. Zaslavsky, M., Druskin, V., Knizhnerman, L.
    [2011] Solution of 3D time-domain electromagnetic problems using optimal subspace projection. Geophysics, 76, F339–F351.
    [Google Scholar]
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