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Table 3 Show Individual residual square error and OHAM solutions convergence at various approximation orders when \(M = Pp = 1 = 2 = \beta = 1,Fs = \delta = \delta_{1} = \delta_{2} = 0.5,\hbar_{u} = - 0.82706,\hbar_{{\uptheta }} = - 0.75851,\hbar_{\phi } = - 0.96084\)

From: Chemical entropy generation and second-order slip condition on hydrodynamic Casson nanofluid flow embedded in a porous medium: a fast convergent method

m

\({\Delta }_{m}^{f}\)

\({\Delta }_{m}^{\theta }\)

\({\Delta }_{m}^{\phi }\)

\(f^{\prime \prime } \left( 0 \right)\)

\(- \theta {^{\prime}}\left( 0 \right)\)

\(- \phi {^{\prime}}\left( 0 \right)\)

CPU time (s)

2

\(1.79 \times 10^{ - 3}\)

\(2.64 \times 10^{ - 6}\)

\(2.68 \times 10^{ - 8}\)

2.289542

0.137041

0.011381

0.3437448

4

\(2.54 \times 10^{ - 8}\)

\(1.65 \times 10^{ - 7}\)

\(1.14 \times 10^{ - 13}\)

2.273865

0.13685

0.011487

0.7187314

6

\(2.35 \times 10^{ - 11}\)

4.85 \(\times 10^{ - 11}\)

\(9.47 \times 10^{ - 15}\)

2.274001

0.137146

0.011488

1.1405919

8

\(1.54 \times 10^{ - 12}\)

\(1.03 \times 10^{ - 13}\)

\(2.26 \times 10^{ - 17}\)

2.274003

0.137151

0.011488

1.671824

10

\(8.95 \times 10^{ - 17}\)

\(4.03 \times 10^{ - 17}\)

\(6.25 \times 10^{ - 20}\)

2.274004

0.137151

0.011488

2.3905487

12

\(9.20 \times 10^{ - 19}\)

\(3.19 \times 10^{ - 19}\)

\(5.55 \times 10^{ - 23}\)

2.274004

0.137151

0.011488

3.3280166

14

\(2.09 \times 10^{ - 22}\)

\(4.05 \times 10^{ - 22}\)

\(1.32 \times 10^{ - 25}\)

2.274004

0.137151

0.011488

3.7185883

20

\(7.76 \times 10^{ - 24}\)

\(1.41 \times 10^{ - 24}\)

\(2.63 \times 10^{ - 28}\)

2.274004

0.137151

0.011488

12.1245886

26

\(6.19 \times 10^{ - 27}\)

\(1.60 \times 10^{ - 27}\)

\(8.66 \times 10^{ - 31}\)

2.274004

0.137151

0.011488

18.2174761

30

\(2.46 \times 10^{ - 29}\)

\(5.56 \times 10^{ - 30}\)

\(1.37 \times 10^{ - 33}\)

2.274004

0.137151

0.011488

22.3578236