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Theory and Modern Applications

Table 8 \(L_{1}\) and \(L_{\infty }\) errors and CPU time at some different values of time-step size k for Problem 1 at time \(2.5\times 10^{-3}\) with spatial mesh size \(h=0.01\), \(\epsilon =0.01\) using NSFD-ϵ scheme, \(T_{\max }=2.5\times 10^{-3}\)

From: On the numerical solution of Fisher’s equation with coefficient of diffusion term much smaller than coefficient of reaction term

Time step (k)

\(L_{1}\) error

\(L_{\infty }\) error

CPU (s)

\(T_{\max }/26\)

1.8636 × 10−1

9.8705 × 10−1

0.653

\(T_{\max }/50\)

1.2102 ×10−1

9.1868 × 10−1

0.662

\(T_{\max }/100\)

6.5470 × 10−2

6.7456 × 10−1

0.670

\(T_{\max }/200\)

2.4582 × 10−2

2.9094 × 10−1

0.682

\(T_{\max }/300\)

4.8806 × 10−3

5.9139 × 10−2

0.699

\(T_{\max }/333\)

1.0091 × 10−3

9.5627 × 10−3

0.715

\(T_{\max }/334\)

9.9448 × 10−4

1.0714 × 10−2

0.707

\(T_{\max }/335\)

1.0119 × 10−3

1.1866 × 10−2

0.787

\(T_{\max }/400\)

8.5987 × 10−3

1.0311 × 10−1

0.722

\(T_{\max }/500\)

1.9385 × 10−2

2.2445 × 10−1

0.780