$\varphi$

$d_h$

t

$R_0$

${\zeta }_{\phi }$

${\epsilon }_0^{-R_e}$

${\tau }_{\tau }$

${\zeta }_0$

$\lambda$

$\zeta$

0.5

mm

mm

<10⁵

0.01

0.81

1.25

1.19

0.026

3.91