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# tutorial4 - Fluid Mechanics(CEN 1013 Chapter 4 Internal...

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Fluid Mechanics (CEN 1013) FWS 1 Tutorial 4 1) Glycerin flows in a 25 mm diameter pipe at a mean velocity of 0.3 ms - 1 . If the density of the glycerin is 1260 kgm -3 and the viscosity is 14.9 x 10 -5 N.sm -2 determine whether the flow is laminar or turbulent? 2) Water is flowing in a pipe of 15 mm diameter. What is the maximum velocity it can have to ensure laminar flow if the value of absolute viscosity is 1.002 x 10 -3 N.sm -2 . 3) Benzene flows through a 100 mm diameter pipe with a mean velocity of 3 ms -1 . Determine the volume flow rate in m 3 s -1 . 4) Determine the friction factor ( f ) for fluid flow in a pipe that has a : i. Reynolds number of 400. ii. Reynolds number of 40 000 and ε = 0. iii. Reynolds number of 40 000 and a relative roughness 0.01. iv. Reynolds number of 4 000 000 and a relative roughness 0.0003. 5) Oil of absolute viscosity 0.101 N.s/m 2 and S.G 0.850 flows through 3000 m of 300 mm cast iron pipe at the rate of 0.0444 m 3 /s. What is the head loss in the pipe? 6)

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tutorial4 - Fluid Mechanics(CEN 1013 Chapter 4 Internal...

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