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EML4304C Test 1 Spring 2009

# EML4304C Test 1 Spring 2009 - EML 4304C Each question worth...

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EML 4304C Test 1 - Spring 2009 Name_______________________ Each question worth 10 points. 1a) The head loss for this system is a) 642.1 m b) 777.2 m c) 421.8 m d) 126.2 m e) 897.2 m f) 523.4 m 1b) The average velocity of the oil in terms of flow rate and diameter D is a) b) c) d) e) f) 1c) Starting with the equation , eliminate V from this equation and find head loss h L in terms of friction factor f , gravity g , , length L , and diameter D . a) b) c) d) e) f) 1d) Using your results from the previous question (1c), find the friction factor f in terms of h L , D , g , L , and flow rate . a) b) c) d) e) f) 1e) Assuming the flow is laminar, the friction factor in terms of Reynolds number is a) b) c) d) e) f) 1f) Using your results from the previous question (1e), find the friction factor f in terms of D , viscosity μ , density ρ , and . a) b) c) d) e) f) 1g) Assuming the flow is laminar, find the diameter of the pipe. a) 4.6 mm b) 3.2 mm c) 15.4 mm d) 19.7 mm e) 8.5 mm f) 12.3 mm 2a) Determine the head loss in the pipe. a) 12.6 m b) 98.3 m c) 122.7 m d) 20.3 m e) 30.4 m f) 46.3 m 2b) If the pipe is now aligned so that the outlet is 30 m above the inlet, what will the inlet pressure need to be to maintain the same flow rate?

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