Air at 20°C and atmospheric pressure flows in a horizontal duct with a cross section corresponding to an equilateral tri
Posted: Sun May 15, 2022 9:37 pm
Air at 20°C and atmospheric pressure flows in a horizontal duct with a cross section corresponding to an equilateral triangle (all sides equal). The duct is 30 m long, and the dimension of a side is 15 cm. The duct is constructed of galvanized iron (ks= 0.00015 m). The mean velocity in the duct is 4 m/s. What is the pressure drop over the 30 m length v = 1.51 x 10-5m2/s p= 1.20kg/m3 -30 m 4 m/s 15 cm