A Highly Accurate Regular Domain Collocation Method for Solving Potential Problems in the Irregular Doubly Connected Domains

Table 2

Computational error of regular domain collocation method under different number of nodes in Example 2.

𝑚	𝑛	Absolute error	Relative error
9	15	1.4678×10^−3	8.2523×10^−4
9	21	8.5082×10^−8	4.6690×10^−8
9	31	7.0509×10^−12	3.6625×10^−12
9	41	2.1288×10^−11	1.0692×10^−11
11	15	9.2872×10^−4	5.8960×10^−4
11	21	2.6053×10^−7	1.3558×10^−7
11	31	7.0704×10^−11	3.0779×10^−11
11	41	5.400×10^−11	3.1968×10^−11