Determine the friction factor for a reynolds

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Reference no: EM132740367

Question 1. Compute Reynolds number for a flow of water at 25°C in pipe of 48 in diameter and at velocity of 3.8 fps.

Question 2. A 12 in diameter post stands in 6 ft of deep water that flows with an average velocity of 6 fps, determine the drag force acting on the post FD, knowing that temperature is 50°F and Co = 1

Question 3. A 5000 ft long pipe with a 10 in. diameter carries 300 gpm of water. The C coefficient is assumed to be 100. Calculate the loss of energy due to friction using the Hazen-Williams Equation.

Question 4. Determine the friction factor for a Reynolds number R = 400.000 and a relative roughness e/0 = 0.006 using Moody diagram and from Swamee-Jain Equation.

Question 5. An open channel needs to be designed to carry 500 ft3/sec on a 0.0002 slope. Using n = 0.015. what is the most efficient dimensions for a rectangular channel.

Question 6. Determine the required diameter of a 5 ft long horizontal drain pipe located at the bottom of a concrete storage tank 15 ft below the water level so that the discharge through the pipe be 9.000 gpm. the drain pipe is a smooth with c = 0.84

Question 7. A rectangular broad crested weir is 20 ft long and is known to have a discharge coefficient of 0.7. determine the discharge if upstream water level is 2 ft over the crest.

Question 8. A river flowing at 680 cfs has a wide rectangular channel with base of 60 ft. slope of 0.002. and Manning n = 0.016. A small dam is to be placed in the with height of 20 ft and depth of the actual flow depth at the toe of the dam is 0.35 ft. A concrete spillway apron extends downstream of the dam to keep any hydraulic jump that might occur away from the riverbed. Calculate the normal and critical depths.

Question 9. A radial gate with flow of 80 ft3/s and 4.3 ft of available head and has a discharge coefficient of 0.72, what is the required area of the gate?

Question 10. A long concrete-lined drainage channel has a slope of 0.0001 ft/ft, a bottom width of 10 ft and 2: 1 side slopes. The water depth is 5 ft, and the Manning's roughness coefficient is 0.012. What is the Froude number for the channel?

Reference no: EM132740367

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