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Table 6 \(E^{N,M}_{\varepsilon ,\mu }\) and \(p^{N,M}_{\varepsilon ,\mu }\) with \(\mu =10^{-3}, \lambda =0, \) for Example 1

From: Uniformly convergent extended cubic B-spline collocation method for two parameters singularly perturbed time-delayed convection-diffusion problems

\(\varepsilon \downarrow \)

\( N=32 \)

\( N=64 \)

\( N=128 \)

\( N=256 \)

\( \Delta t=0.25\)

\( \Delta t=0.25/2^{2}\)

\( \Delta t=0.25/2^{4} \)

\( \Delta t=0.25/2^{6} \)

\(10^{-0}\)

\( 7.3970e-03 \)

\( 3.6490e-03 \)

\( 1.1642e-03 \)

\( 3.1262e-04 \)

1.0194

1.6482

1.8969

\(10^{-2}\)

\( 1.9438e-02 \)

\( 5.4750e-03 \)

\( 1.4141e-03 \)

\( 3.5651e-04 \)

1.8279

1.9530

1.9879

\(10^{-4}\)

\( 1.9861e-02 \)

\( 5.5330e-03 \)

\( 1.4235e-03 \)

\( 3.5849e-04 \)

1.8438

1.9586

 

\(10^{-6}\)

\( 1.9905e-02 \)

\( 5.5564e-03 \)

\( 1.4355e-03 \)

\( 3.6396e-04 \)

1.8409

1.9526

1.9797

\(10^{-8}\)

\( 1.9905e-02 \)

\( 5.5564e-03 \)

\( 1.4355e-03 \)

\( 3.6459e-04 \)

1.8409

1.9526

1.9772

\(10^{-10}\)

\( 1.9905e-02 \)

\( 5.5564e-03 \)

\( 1.4355e-03 \)

\( 3.6459e-04 \)

1.8409

1.9526

1.9772

\(10^{-12}\)

\( 1.9905e-02 \)

\( 5.5564e-03 \)

\( 1.4355e-03 \)

\( 3.6459e-04 \)

1.8409

1.9526

1.9772

\(E_{\varepsilon ,\mu }^{N,M}\)

\( 1.9905e-02 \)

\( 5.5564e-03 \)

\( 1.4355e-03 \)

\( 3.6459e-04 \)

Method in [35]

\(E_{\varepsilon ,\mu }^{N,M}\)

\( 4.3706e-02 \)

\( 7.3807e-03 \)

\( 1.8967e-03 \)

\( 4.7927e-04 \)