2016年
A basic investigation for prediction of outdoor sound propagation in large area using fast multipole boundary element method
Acoustical Science and Technology
- ,
- ,
- ,
- 巻
- 37
- 号
- 2
- 開始ページ
- 87
- 終了ページ
- 90
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1250/ast.37.87
- 出版者・発行元
- Acoustical Society of Japan
The applicability of the FMBEM to large outdoor problems was basically investigated. Conclusions are as follows. (i) The computational costs of the LF-FMBEM have no systematic relation with model size (root cell size) up to 1-km scale models. (ii) An increase in the root cell size directly increases the computational costs of the HF-FMBEM. (iii) It is much more inefficient in the HF-FMBEM to simply reduce the largest cell size used for computation with keeping high computational accuracy. (iv) An empirical formula proposed in Ref. [7] for the truncation number of infinite summation in the HF-FMBEM gives good values for high computational accuracy even in the range of kD ≤ 4
000, which corresponds to f ≤ 2
500 Hz with the root cell 200m on each side, if an appropriate value is chosen for its parameter.
000, which corresponds to f ≤ 2
500 Hz with the root cell 200m on each side, if an appropriate value is chosen for its parameter.
- リンク情報
- ID情報
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- DOI : 10.1250/ast.37.87
- ISSN : 1347-5177
- ISSN : 1346-3969
- SCOPUS ID : 84960903707
- Web of Science ID : WOS:000422629900006