Fourth-Order Deferred Correction Scheme for Solving Heat Conduction Problem

Table 3

Maximum absolute error, order of convergence, and CPU time in seconds for Example 3 at time instant 𝑡=1 with fixed mesh size Δ𝑥=0.05.

Types of scheme	Time step sizes	Maximum error	Rate of convergence	Aver. number of iteration	CPU time in sec.
FODs	10^−2	8.0945×10^−6	—	10	0.015
	10^−3	8.0942×10^−7	1.0000	6	0.109
	10^−4	8.1144×10^−8	0.9989	3	0.656
	10^−5	8.2989×10^−9	0.9902	3	6.281