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	2005/03
形態種別	学術雑誌
査読	査読あり
標題	A Technique for plane-symmetric sound field analysis in the fast multipole boundary element method
執筆形態	共著
掲載誌名	Journal of Computational Acoustics
巻・号・頁	13(1),pp.71-85
著者・共著者	Y. Yasuda and T. Sakuma
概要	The fast multipole boundary element method (FMBEM) is an advanced BEM, with which both the operation count and the memory requirements are O(N^a log^b N) for large-scale problems, where N is the degree of freedom (DOF), a ≥ 1 and b ≥ 0. In this paper, an efficient technique for analyses of plane-symmetric sound fields in the acoustic FMBEM is proposed. Half-space sound fields where an infinite rigid plane exists are typical cases of these fields. When one plane of symmetry is assumed, the number of elements and cells required for the FMBEM with this technique are half of those for the FMBEM used in a naive manner. In consequence, this technique reduces both the computational complexity and the memory requirements for the FMBEM almost by half. The technique is validated with respect to accuracy and efficiency through numerical study.