arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.08515math.NAcs.NA
收藏

基于滤波时域解的 Krylov 特征值求解器

A Krylov Eigenvalue Solver Based on Filtered Time Domain Solutions

Lothar Nannen, Markus Wess

AI总结:

本文提出一种求解大规模广义 Hermitian 矩阵特征值问题的方法,通过结合显式时域积分器、滤波和 Krylov 迭代,高效计算给定区域内的特征值,并在小规模模型和三维猎号声学共振问题中验证了可靠性与效率。

摘要:

本文介绍了一种计算广义 Hermitian 矩阵特征值问题特征值和特征向量的方法。该工作聚焦于大规模特征值问题,其中直接求逆无法实现。相反,将相应波动问题的显式时域积分器与适当的滤波和 Krylov 迭代相结合,以求解给定感兴趣区域内的特征值。我们报告了小规模模型问题的结果以确认该方法的可靠性,以及三维猎号模型中声学共振的计算以展示其效率。

英文摘要:

This paper introduces a method for computing eigenvalues and eigenvectors of a generalized Hermitian, matrix eigenvalue problem. The work is focused on large scale eigenvalue problems, where the application of a direct inverse is out of reach. Instead, an explicit time-domain integrator for the corresponding wave problem is combined with a proper filtering and a Krylov iteration in order to solve for eigenvalues within a given region of interest. We report results of small scale model problems to confirm the reliability of the method, as well as the computation of acoustic resonances in a three dimensional model of a hunting horn to demonstrate the efficiency.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑