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Theory and Modern Applications

Table 10 Comparison of numerical results of Example 5.2 with Shishkin mesh with \(\varepsilon _{2}=10^{-2}\)

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

N/Δt

\(\varepsilon _{1}=10^{-4}\)

\(\varepsilon _{1}=10^{-6}\)

Shishkin mesh

Adaptive mesh

Shishkin mesh

Adaptive mesh

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

9.1770e − 02

1.0625e − 01

9.2836e − 02

1.7981e − 01

0.5076

0.6533

0.4936

0.5783

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

6.4546e − 02

6.7754e − 02

6.5938e − 02

9.7493e − 02

0.6481

0.7888

0.6587

0.7454

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

4.1187e − 02

3.9103e − 02

4.1769e − 02

5.3310e − 02

0.7238

0.8853

0.7118

0.8093

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

2.4938e − 02

2.1170e − 02

2.5503e − 02

2.8267e − 02