Examination of Absorbing Boundary Condition Using Perfectly Matched Layer for Collocated Orthogonal Grid in Method of Characteristics
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概要
- 論文の詳細を見る
The time domain numerical analysis of sound wave propagation has been performed widely as a result of computer development. The method of characteristics (MOC) is used as a time domain numerical analysis method. In multidimensional MOC sound wave analysis, the so-called automatically absorbing boundary (without additional outer boundary treatment) does not have excellent absorbing performance. To overcome this problem, we introduce the perfectly matched layer (PML) technique into MOC simulation. Through this study, it is clarified that the PML (L = 16) reflection at a vertical incidence is approximately 22 dB lower than the automatically absorbing boundary (without PML) in the simulation by the QUICKEST method.
- 2013-07-25
著者
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Tagawa Norio
Graduate School Of Electrical Engineering Tokyo Metropolitan University
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Tsuchiya Takao
Department Of Electronic Engineering Okayama Universiy
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Okubo Kan
Graduate School of System Design, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo 191-0065, Japan
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Ishizuka Takashi
Shimizu Institute of Technology, Shimizu Corporation, Koto, Tokyo 135-8530, Japan
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Adachi Junpei
Graduate School of System Design, Tokyo Metropolitan University, Hino, Tokyo 191-0065, Japan
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