Dispersion-Reduced Time Domain FEM for Room Acoustics Simulation
説明
This paper presents an overview of the applicability of implicit time-domain FEM (TD-FEM) for room acousticssimulation, which has fourth-order accuracy in both space and time. First, the TD-FEM algorithm is presentedwith explanations of dispersion-reduced finite elements for spatial discretization and a time integration methodfor time discretization. The theoretical dispersion error property is also shown. Use of the dispersion-reducedscheme presents benefits in terms of accuracy, stability and convergence of an iterative solver, which have amarked effect on the computational cost. Then, the applicability of TD-FEM is demonstrated using two numer-ical examples on room acoustics simulation in the kilohertz frequency range, which are acoustics simulationsof a simply shaped concert hall and simulation of reverberation absorption coefficient measurements. In numer-ical examples of concert hall analysis, comparison with a conventional TD-FEM presents the efficiency of thedispersion-reduced TD-FEM. Modeling accuracy of non-locally reacting permeable membrane sound absorbersfor the TD-FEM is presented through simulation of reverberation room method.
収録刊行物
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- Proceedings of the 23rd International Congress on Acoustics
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Proceedings of the 23rd International Congress on Acoustics 6033-6042, 2019
RWTH
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詳細情報 詳細情報について
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- CRID
- 1050856995322120064
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- NII論文ID
- 120007002591
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- HANDLE
- 20.500.14094/90008045
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- 本文言語コード
- en
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- 資料種別
- conference paper
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- データソース種別
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- IRDB
- CiNii Articles