τ

Harris et al. [4]

Hossian et al. [11]

Present result

C f R e x 1 / 2

N u x R e x 1 / 2

C f R e x 1 / 2

N u x R e x 1 / 2

C f R e x 1 / 2

N u x R e x 1 / 2

0.01

5.65797

5.64360

5.66886

5.64525

5.65769

5.63468

0.10

1.83491

1.78946

1.83693

1.76140

1.83312

1.75951

0.20

1.33334

1.26902

1.33189

1.22357

1.33090

1.22543

0.40

0.99341

0.90234

0.99548

0.83937

0.99038

0.83739

1.0

0.72370

0.57925

0.72665

0.46370

0.72116

0.46104