Advances in Continuous and Discrete Models

Theory and Modern Applications

Table 8 Comparison of the iteration number and computational cost (WU) on different grid level of MG and EXFMG methods for Example 5.2

From: An extrapolation full multigrid algorithm combined with fourth-order compact scheme for convection–diffusion equations

j	\(\Omega _{j}\)	MG		EXFMG
j	\(\Omega _{j}\)	Iter	WU	Iter	WU
2	64 × 64	1	0.02	1	0.02
3	128 × 128	9	0.70	11	0.86
4	256 × 256	8	2.63	9	2.95
5	512 × 512	9	11.95	6	7.97
6	1024 × 1024	8	42.63	4	21.31

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