2024-03-28T12:41:25Z
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Perfectly Matched Layers for Water Wave Absorbing Boundaries in Infinite Domain Problems
Tsutsui, Shigeaki
Perfectly matched layer (PML)
PML equation
Complex coordinate stretching
Wave absorbing
Open boundary conditions
Infinite domain problems
Nonlinear waves
Finite element analysis
As an absorbing boundary in infinite domain problems, the perfectly matched layer (PML) is introduced to attenuate outgoing waves. The PML equation of wave propagation in a nonphysical absorbing material is derived from the governing equation with the aide of the complex coordinate stretching; both the domain of analysis and the PML are dealt with the equivalent wave equations. Because of the coordinate independence in stretching, the PML in one-dimension is essential for multidimensional problems. Through finite element computations for basic, linear and nonlinear wave propagation problems, we investigate the PML parameters to design efficient PMLs. The result shows the ability and efficiency of the PMLs for absorbing boundaries.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学工学部
2008-05
VoR
http://hdl.handle.net/20.500.12000/7127
0389-102X
AN0025048X
琉球大学工学部紀要
69
24
7
eng
open access