Highly Efficient Calculation Schemes of Finite-Element Filter Approach for the Eigenvalue Problem of Electric Field

Table 2

The results on L-shape domain by Scheme 2 for eigenvalue problem of electric field (𝛾=0.5): Set ℎ₁=𝐻=√2/8,ℎ₂=ℎ₁/4,ℎ_𝑖=ℎ_𝑖−1/2,𝑖=3,4,….

𝑙	𝜆^ℎ𝑙1	𝜆^ℎ𝑙2	𝜆^ℎ𝑙3	𝜆^ℎ𝑙5
2	1.821670160961	3.541016446362	9.869624525814	11.392623917025
3	1.747568405543	3.536558996225	9.869605667282	11.390593949705
4	1.690869606785	3.534929019047	9.869604480461	11.389874997804
5	1.646185577455	3.534344665373	9.869604406059	11.389617861812