Table 1.

Numerical simulations results for the flat bottom wall

Flat bottom wall
Pressure gradient [Pa/m]	Re	Average velocity [m/s]	Slip velocity [m/s]	$\tau$ bottom wall [N/m2]	Friction factor f [-]
100	14	7.53×10−3	0	4.36×10−5	6.16×10−3
500	72	3.77×10−2	0	2.18×10−4	1.23×10−3
1000	143	7.53×10−2	0	4.36×10−4	6.16×10−4
5000	715	3.77×10−1	0	2.18×10−3	1.23×10−4
10000	1431	7.53×10−1	0	4.36×10−3	6.16×10−5