Fourth-Order Deferred Correction Scheme for Solving Heat Conduction Problem

Table 4

Maximum absolute error, order of convergence, and CPU time in seconds for Example 3 at time instant 𝑡=1 with time step size Δ𝑡=Δ𝑥⁴.

Types of scheme	Grid points	Maximum error	Rate of convergence	Aver. number of iteration	CPU time in sec.
	11	8.3375×10^−8	—	3	0.516
FODs	21	5.2632×10^−9	3.9812	2	8.594
	41	3.3491×10^−10	3.9774	2	200.015