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- W762933393 abstract "Recently, perfectly matched layer (PML) as an absorbing boundary condition has widespread applications. The idea was first introduced by Berenger for electromagnetic waves computations. In this paper, it is shown that the PML equations for the linearized Euler equations support unstable solutions when the mean flow has a component normal to the layer. To suppress such unstable solutions so as to render the PML concept useful for this class of problems, it is proposed that artificial selective damping terms be added to the discretized PML equations. It is demonstrated that with a proper choice of artificial mesh Reynolds number, the PML equations can be made stable. Numerical examples are provided to illustrate that the stabilized PML performs well as an absorbing boundary condition. In a ducted environment, the wave mode are dispersive. It will be shown that the group velocity and phase velocity of these modes can have opposite signs. This results in a confined environment, PML may not be suitable as an absorbing boundary condition." @default.
- W762933393 created "2016-06-24" @default.
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- W762933393 date "1998-01-01" @default.
- W762933393 modified "2023-09-27" @default.
- W762933393 title "Perfectly Matched Layer for Linearized Euler Equations in Open and Ducted Domains" @default.
- W762933393 hasPublicationYear "1998" @default.
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