Fourier spectral method for acoustic simulation with domain enclosed by curved boundary

Yu Kohase, Tsubasa Kusano, Kohei Yatabe, Yasuhiro Oikawa

研究成果: Conference contribution

抄録

Curved geometries often make sound propagation complex. Such complexity may cause acoustical problems including flutter echo and sound focusing. When designing the geometry, acoustic simulation can be helpful to prevent such problems. Fourier spectral method (FSM) is a simulation method by approximation using the Fourier basis. Although FSM has many advantages such as its high convergence rate, the application range of the conventional FSM is limited to a simply-shaped domain with a specific boundary condition. In a realistic acoustics room setting, there exist a lot of room shapes beyond the scope of FSM. At the same time, the Fourier extension (FE) has been proposed for approximating a function on a complicated domain by the Fourier basis. It can be expected that the FE expands the application range of FSM. In this paper, we introduce FE into FSM for extending it to make a computational domain enclosed by curved boundaries tractable.

本文言語English
ホスト出版物のタイトルProceedings of the 23rd International Congress on Acoustics
ホスト出版物のサブタイトルIntegrating 4th EAA Euroregio 2019
編集者Martin Ochmann, Vorlander Michael, Janina Fels
出版社International Commission for Acoustics (ICA)
ページ4498-4504
ページ数7
ISBN(電子版)9783939296157
DOI
出版ステータスPublished - 2019
イベント23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
継続期間: 2019 9 92019 9 23

出版物シリーズ

名前Proceedings of the International Congress on Acoustics
2019-September
ISSN(印刷版)2226-7808
ISSN(電子版)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
国/地域Germany
CityAachen
Period19/9/919/9/23

ASJC Scopus subject areas

  • 機械工学
  • 音響学および超音波学

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