研究者情報 | 神奈川大学

ヤスダ　ヨウスケ Yasuda Yosuke 安田　洋介所属神奈川大学建築学部建築学科神奈川大学大学院工学研究科建築学専攻職種教授
言語種別	英語
発行・発表の年月	2012/10
形態種別	学術雑誌
査読	査読あり
標題	Efficient technique in low-frequency fast multipole boundary element method for plane-symmetric acoustic problems
執筆形態	共著
掲載誌名	Engineering Analysis with Boundary Elements
掲載区分	国外
巻・号・頁	36(10),pp.1493-1501
著者・共著者	Y. Yasuda, K. Higuchi, T. Oshima and T. Sakuma
概要	The fast multipole boundary element method (FMBEM) has been well known as a highly efficient BEM with the use of the fast multipole method (FMM). In the present paper, an efficient technique for plane-symmetric acoustic problems is proposed in the framework of an FMBEM based on the original multipole expansion theory (FMBEM for low-frequency problems: LF-FMBEM). Presented here are concrete computational procedures, which are based on the symmetries among multipole expansion coefficients for a plane-symmetric sound field produced by monopole or dipole sources. The proposed technique is straightforwardly applicable to a variety of formulations for the BEM, such as hypersingular, Burton-Miller, and indirect formulations. Numerical results show an ideal improvement of computational efficiency, with the proposed technique.