Analysis of Two-Grid Characteristic Finite Element Methods for Convection-Diffusion Equations

Table 1

Numerical results of Algorithm 1 and CFEM.

Algorithm 1			CFEM
		Computing time (s)	h		Computing time (s)
	1.9518 e − 3	1.28		1.7156 e − 3	1.59
	2.9224 e − 5	25.16		2.6173 e − 5	94.21
	2.6236 e − 6	118.35		2.3352 e − 6	645.66
Rate	2		Rate	2