Homework SourseA 10ft duct 12 in in diameter contains oxygen flowing at the
A 10-ft duct 12 in. in diameter contains oxygen flowing at the rate of 80 lbm/sec.
Measurements at the inlet give p1=30 psia and T1=800°R. The pressure at the outlet is p2=23 psia.
(a) Calculate M1,M2,V2,Tt2, and pt2
(b) Determine the friction factor and estimate the absolute roughness of the duct material.
Solution
From the above given data
M1 = 3
M2=2
V= 4.5
T2= 356c
pt2 =120
Friction factor = 0.0006
