A New Characteristic Nonconforming Mixed Finite Element Scheme for Convection-Dominated Diffusion Problem

Table 2

Numerical results of ‖𝑢−𝑢_ℎ‖.

𝑚×𝑛	𝑡=0.4	𝛼	𝑡=0.5	𝛼	𝑡=0.7	𝛼
8×8	0.0298190	/	0.0276370	/	0.0223240	/
16×16	0.0073087	2.03	0.0062445	2.15	0.0048038	2.22
32×32	0.0020769	1.82	0.0017926	1.80	0.0013309	1.85
𝑚×𝑛	𝑡=0.8	𝛼	𝑡=0.9	𝛼	𝑡=1.0	𝛼
8×8	0.0198730	/	0.0175900	/	0.0154090	/
16×16	0.0044472	2.16	0.0041982	2.07	0.0039150	1.98
32×32	0.0011894	1.90	0.0010738	1.97	0.0009466	2.05