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In this chapter, the Perfectly Matched Layer absorbing boundary condition is introduced in the two-dimensional (2D) case. The 2D case is simple and important because the absorption of plane waves by a PML or any other ABC is essentially a 2D problem. With a 3D computational domain, the interaction of a plane wave with a PML is a true 3D problem in the edge and corner regions, but it remains a 2D problem in the walls that form most of the outer boundary of the domain.

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The Two-Dimensional Perfectly Matched Layer

  • 章节

  • 发表日期：

    2025年

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  • Jean-Pierre Bérenger

摘要

In this chapter, the Perfectly Matched Layer absorbing boundary condition is introduced in the two-dimensional (2D) case. The 2D case is simple and important because the absorption of plane waves by a PML or any other ABC is essentially a 2D problem. With a 3D computational domain, the interaction of a plane wave with a PML is a true 3D problem in the edge and corner regions, but it remains a 2D problem in the walls that form most of the outer boundary of the domain.