کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
512739 866424 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient technique in low-frequency fast multipole boundary element method for plane-symmetric acoustic problems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Efficient technique in low-frequency fast multipole boundary element method for plane-symmetric acoustic problems
چکیده انگلیسی

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 reducing both the computation time and required memory to about 1/2nsym1/2nsym of those using the standard LF-FMBEM, where nsymnsym is the number of planes of symmetry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Analysis with Boundary Elements - Volume 36, Issue 10, October 2012, Pages 1493–1501
نویسندگان
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