Optimal PML parameters for efficient numerical simulation of waves in an unbounded domain


  • Yijia Liu Australian National University
  • Kenneth Duru Australian National University
  • Stephen Roberts Australian National University




The perfectly matched layer (PML) is a perfectly non-reflecting layer that simulates the absorption of waves. However, in practice, once the PML is truncated and discretised, the PML is no longer a completely non-reflecting medium. In this article we discuss how to derive optimal PML parameters for the one dimensional acoustic wave equation. Using a multi-block strategy, we present a numerical implementation of the PML that completely eliminates the PML errors. Numerical experiments are presented to verify the analysis.


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