Q.2//B// The standard air velocity in a 0.4 m diameter duct is 7 m/s. The duct expands to a rectangular cross section of 0.4×0.8 m as shown in Figure below. Where the kinematic viscosity of air 1.78×10 m/s. Determine: (i) the velocity of the air in the rectangular duct, (ii) mass flow rate of air in circular duct, (iii) Reynolds number of the air flowing in the rectangular duct, where the equivalent diameter equal: D = 1.26 a³b³\5 a+b 04m Flow 1 V₁ = 7 m/s Flow 2
Q.2//B// The standard air velocity in a 0.4 m diameter duct is 7 m/s. The duct expands to a rectangular cross section of 0.4×0.8 m as shown in Figure below. Where the kinematic viscosity of air 1.78×10 m/s. Determine: (i) the velocity of the air in the rectangular duct, (ii) mass flow rate of air in circular duct, (iii) Reynolds number of the air flowing in the rectangular duct, where the equivalent diameter equal: D = 1.26 a³b³\5 a+b 04m Flow 1 V₁ = 7 m/s Flow 2
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Q.2//B// The standard air velocity in a 0.4 m diameter duct is 7 m/s. The duct expands to a
rectangular cross section of 0.4×0.8 m as shown in Figure below. Where the kinematic viscosity
of air 1.78×105 m²/s. Determine: (i) the velocity of the air in the rectangular duct, (ii) mass flow
rate of air in circular duct, (iii) Reynolds number of the air flowing in the rectangular duct, where
the equivalent diameter equal:
D = 1.26
a³b³
a+b
0.4m
Flow 1
v₁ = 7 m/s
Flow 2
V/₂
0.4mx08m
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