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ENGG252 (DB225) Engineering Fluid Mechanics
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IF-172 Water flows in a 15-cm-diameter pipe at a velocity of 1.8 m/s. If the head loss along the pipe is estimated to be 16 m, the required pumping power to overcome this head loss is
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IF-174 Air at 1 atm and 25 degree-C [nu = 1.562x10^-5 m^2/s] flows in a 9-cm-diameter cast iron pipe at a velocity of 5 m/s. The roughness of the pipe is 0.26 mm. The head loss for a pipe length of 24 m is
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IF-169 Consider laminar flow of water at 15 degree-C in a 0.7-cm-diameter pipe at a velocity of 0.4 m/s. The pressure drop of water for a pipe length of 50 m is
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IF-175 Consider air flow in a 10-cm-diameter pipe at a high velocity so that the Reynolds number is very large. The roughness of the pipe is 0.002 mm. The friction factor for this flow is
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IF-164 The average velocity for fully developed laminar pipe flow is
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IF-165 The Reynolds number is not a function of
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IF-171 A fluid flows in a 25-cm-diameter pipe at a velocity of 4.5 m/s. If the pressure drop along the pipe is estimated to be 6400 Pa, the required pumping power to overcome this pressure drop is
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IF-167 Air at 1 atm and 20 degree-C flows in a 4-cm-diameter tube. The maximum velocity of air to keep the flow laminar is
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IF-177 Water at 10 degree-C [rho = 999.7 kg/m^3, mu = 1.307x10^-3 kg/m.s] is to be transported in a 5-cm-diamater, 30-m-long circular pipe. The roughness of the pipe is 0.22 mm. If the pressure drop in the pipe is not to exceed 19 kPa, the maximum flow rate of water is
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IF-176 Air at 1 atm and 40 degree-C flows in a 8-cm-diameter pipe at a rate of 2500 L/min. The friction factor is determined from the Moody chart to be 0.027. The required power input to overcome the pressure drop for a pipe length of 150 m is
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