A Novel Characteristic Expanded Mixed Method for Reaction-Convection-Diffusion Problems

Table 2

The errors and convergence rate for 𝜆 and 𝜎.

(ℎ,Δ𝑡)	‖𝜆−𝜆ℎ‖𝐿∞((𝐿2(Ω))^2)	Rate	‖𝜎−𝜎ℎ‖𝐿∞((𝐿2(Ω))^2)	Rate
(√2/8,1/16)	2.6251𝑒−002		5.4313𝑒−002
(√2/16,1/32)	1.3576𝑒−002	0.9513	2.9081𝑒−002	0.9013
(√2/32,1/64)	6.8830𝑒−003	0.9800	1.5018𝑒−002	0.9534