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Theory and Modern Applications

Table 8 Maximum error \(E_{\varepsilon }^{N,M}\) for Example 5.2 using the adaptive grid method with \(\varepsilon _{2}=10^{-2}\)

From: Parameter uniform numerical method for a system of two coupled singularly perturbed parabolic convection-diffusion equations

\(\varepsilon _{1}\)

Number of intervals N/time size Δt

\(32/\frac{1}{20}\)

\(64/\frac{1}{40}\)

\(128/\frac{1}{80}\)

\(256/\frac{1}{160}\)

\(512/\frac{1}{320}\)

10−3

8.5765e − 02

5.4978e − 02

3.2185e − 02

1.7851e − 02

9.4792e − 03

10−4

1.0625e − 01

6.7554e − 02

3.9103e − 02

2.1170e − 02

1.0681e − 02

10−5

1.1804e − 01

7.8694e − 02

4.5355e − 02

2.6197e − 02

1.4536e − 02

10−6

1.1955e − 01

8.0068e − 02

4.7762e − 02

2.7255e − 02

1.5683e − 02

10−7

1.1639e − 01

7.4345e − 02

4.9340e − 02

2.8595e − 02

1.7408e − 02