Multigrid discretization and iterative algorithm for mixed variational formulation of the eigenvalue problem of electric field (Q1938133)

Summary: This paper discusses highly finite element algorithms for the eigenvalue problem of an electric field. Combining the mixed finite element method with the Rayleigh quotient iteration method, a new multi-grid discretization scheme and an adaptive algorithm are proposed and applied to the eigenvalue problem of an electric field. Theoretical analysis and numerical results show that the computational schemes established in the paper have high efficiency.