A New Way to Generate an Exponential Finite Difference Scheme for 2D Convection-Diffusion Equations

Table 5

Maximum absolute errors in the computed solution, Example 8 with 𝑃=1000.

ℎ=𝑘	UDS	EDS0	EDS	EDS0-RE	EDS-RE
1/8	3.51𝑒−2	3.45𝑒−2	2.20𝑒−2	1.16𝑒−2	1.46𝑒−3
1/16	1.89𝑒−2	1.78𝑒−2	1.56𝑒−2	5.17𝑒−3	3.26𝑒−4
1/32	9.96𝑒−3	8.39𝑒−3	7.64𝑒−3	1.93𝑒−3	3.80𝑒−5
1/64	5.08𝑒−3	3.56𝑒−3	3.14𝑒−3	5.29𝑒−4	2.75𝑒−6
1/128	2.57𝑒−3	1.29𝑒−3	1.14𝑒−3	8.82𝑒−5	2.55𝑒−7
1/256	1.29𝑒−3	3.88𝑒−4	3.54𝑒−4