Table 1 The arithmetical results for skin friction along x and y direction.

From: Numerical simulation of 3D Darcy–Forchheimer fluid flow with the energy and mass transfer over an irregular permeable surface

\(\Lambda_{1}\)

\(\Lambda\)

\(M\)

\(P_{0}\)

\(D\)

\(Cf_{x} Re_{x}^{{{\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 2}}\right.\kern-\nulldelimiterspace} \!\lower0.7ex\hbox{$2$}}}}\)

\(Cf_{y} Re_{y}^{{{\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 2}}\right.\kern-\nulldelimiterspace} \!\lower0.7ex\hbox{$2$}}}}\)

0.3

0.1

0.4

1.0

0.2

− 1.47496

− 2.63760

0.5

    

− 1.38337

− 2.31511

0.7

    

− 1.30327

− 2.03290

 

0.2

   

− 1.53371

− 2.48535

 

0.3

   

− 1.59228

− 2.39394

  

0.8

  

− 1.72496

− 3.04651

  

1.2

  

− 1.87555

− 3.41097

   

1.5

 

− 1.64601

− 3.02635

   

2.0

 

− 1.79842

− 3.04401

    

0.4

− 1.49881

− 3.08712

    

0.6

− 1.52651

− 3.53664