Analysis of the Block-Grid Method for the Solution of Laplace's Equation on Polygons with a Slit

Table 3

The order of convergence 𝑅_𝐺^2,𝜚_NS, and 𝑅_𝐺^2,𝜚_S when ℎ=2^−𝜚.

(2^−𝜚,𝑛)	ℜ𝐺^2,𝜚NS	ℜ𝐺^2,𝜚S
(2^−4, 85)	4.659	4.9459
(2^−5, 85)
(2^−4, 100)	3.5376	7.3742
(2^−5, 100)
(2^−4, 120)	3.7551	5.8793
(2^−5, 120)
(2^−5, 130)	4.0756	6.9976
(2^−6, 130)
(2^−5, 140)	4.3845	4.6938
(2^−6, 140)