| Project/Area Number |
20700007
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fundamental theory of informatics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
YASUDA Yosuke The University of Tokyo, 大学院・新領域創成科学研究科, 特任研究員 (90456187)
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| Project Period (FY) |
2008 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | シミュレーション工学 / ソフトウェア開発効率化・安定化 / 計算物理 / 音響数値解析 |
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| Research Abstract |
A next generation boundary element method (BEM), which enables large-scale calculation of acoustical problems including structural-acoustical and acoustical-acoustical coupled ones with the use of the fast multipole method (FMM) and the Krylov subspace iterative method, has been developed. Specifically, a numerical setting to deal with absorbent materials in conjunction with the FMM has been proposed, and an efficient technique to analyze structural-acoustical problems based on modal analyses of structural fields has been developed. This next generation BEM also enables efficient calculation of so-called low-frequency problems (the boundary mesh size is much smaller than the wavelength), which the conventional FMM-accelerated BEM cannot calculate because of numerical instability.
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