A Two-Grid Method for Finite Element Solutions of Nonlinear Parabolic Equations

Table 2

𝐻¹ error and CPU time of the two-grid finite element method.

ℎ	𝐻	𝐻1 error	CPU time (s)
1/9	1/3	4.989×10^−3	5.7660
1/16	1/4	3.264×10^−4	16.1812
1/36	1/6	1.286×10^−4	414.875
1/64	1/8	8.548×10^−5	2831.70