Fast multipole accelerated boundary element method for the Helmholtz equation in acoustic scattering

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我们使用加速的快多极方法(FMM ) 边界元素方法(BEM ) 为三维(3D ) Helmholtz 方程,并且作为结果,包含 400000 个元素的大规模声学的散布问题高效地被解决。这是快多极 BEM 为的延期二维(2D ) 声学的问题最近由作者发展了。一些新改进被获得。在这种新技术,改进死亡厂主明确的表达被采用为外面的声学的问题在常规 BEM 克服非唯一困难。计算效率被采用 FMM 和在概括最小的剩余方法(GMRES ) 使用的块对角线 preconditioner 进一步改进解决系统矩阵方程的反复的
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