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Theory and Modern Applications

Table 7 Numerical accuracy for Example 4.4 using EAC3 with \(h=0.1\) and \(J_{x}=20\) on \([-10,10]\) for various values of ε, ν and η

From: Simulation of advection–diffusion–dispersion equations based on a composite time discretization scheme

ε

ν

η

\(E_{\infty }(t)\)

\(E_{R2}(t)\)

t = 0.3

t = 0.6

t = 0.9

t = 0.3

t = 0.6

t = 0.9

1.0

0.1

1.0

9.11 × 10−17

3.52 × 10−15

3.39 × 10−14

9.75 × 10−15

2.26 × 10−13

2.09 × 10−12

0.1

0.1

3.23 × 10−10

2.09 × 10−9

3.95 × 10−9

4.86 × 10−9

3.03 × 10−8

5.56 × 10−8

0.1

0.01

3.12 × 10−4

2.12 × 10−3

4.31 × 10−3

2.89 × 10−4

1.85 × 10−3

3.63 × 10−3

0.1

0.1

1.0

9.02 × 10−16

3.49 × 10−14

3.37 × 10−13

9.62 × 10−15

2.24 × 10−13

2.08 × 10−12

0.1

0.1

3.23 × 10−9

2.09 × 10−8

3.95 × 10−8

4.86 × 10−9

3.30 × 10−8

5.56 × 10−8

0.1

0.01

6.49 × 10−4

4.42 × 10−3

8.98 × 10−3

2.89 × 10−4

1.85 × 10−3

3.63 × 10−3