Perfectly matched layer for acoustic waveguide modeling --- benchmark calculations and perturbation analysis
Ya Yan Lu; and Jianxin Zhu

Source CMES: Computer Modeling in Engineering & Sciences, Vol. 22, No. 3, pp. 235-248, 2007
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Keywords Perfectly matched layer, acoustic waveguides, one-way wave equations.
Abstract The perfectly matched layer (PML) is a widely used technique for truncating unbounded domains in numerical simulations of wave propagation problems. In this paper, the PML technique is used with a standard one-way model to solve a benchmark problem for underwater acoustics modeling. Accurate solutions are obtained with a PML layer with a thickness of only a quarter of the wavelength. The effect of a PML is analyzed in a perturbation analysis for waveguides.
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