A Nonnested Augmented Subspace Method for Eigenvalue Problems with Curved Interfaces

Abstract

In this paper, we present a nonnested augmented subspace algorithm and its multilevel correction method for solving eigenvalue problems with curved interfaces. The augmented subspace algorithm and the corresponding multilevel correction method are designed based on a coarse finite element space which is not the subset of the finer finite element space. The nonnested augmented subspace method can transform the eigenvalue problem solving on the finest mesh to the solving linear equation on the same mesh and small scale eigenvalue problem on the low dimensional augmented subspace. The corresponding theoretical analysis and numerical experiments are provided to demonstrate the efficiency of the proposed algorithms.

arXiv comment23 pages, 33 figures

References in corpus (4)

• A Full Multigrid Method for Eigenvalue Problems
• Local and Parallel Finite Element Algorithm Based On Multilevel Discretization for Eigenvalue Problem
• An Efficient Multigrid Method for Ground State Solution of Bose-Einstein Condensates
• An Algebraic Multigrid Method for Eigenvalue Problems in Some Different Cases