Cubic Spline Iterative Method for Poisson’s Equation in Cylindrical Polar Coordinates

Table 2

Example 4.1: The maximum absolute errors (𝑘/ℎ²=64).

ℎ	Proposed 𝑂(𝑘^2+ℎ^4) method			𝑂(𝑘^4+ℎ^4) method discussed in [8]
	𝛽=5	𝛽=10	𝛽=15	𝛽=5	𝛽=10	𝛽=15
116	0.1808𝐸−01	0.1636𝐸−01	0.1494𝐸−01	0.4408𝐸−01	0.4212𝐸−01	0.4018𝐸−01
132	0.1129𝐸−02	0.1026𝐸−02	0.9396𝐸−03	0.2692𝐸−02	0.2554𝐸−02	0.2482𝐸−02
164	0.7054𝐸−04	0.6419𝐸−04	0.5881𝐸−04	0.1645𝐸−03	0.1566𝐸−03	0.1512𝐸−03