The water at 20°C in a 10-m-diameter, 2-m-high aboveground swimming pool is to be emptied by unplugging a 5-cm-diameter, 25-m-long horizontal plastic pipe attached to the bottom of the pool. Determine the initial rate of discharge of water through the pipe and the time (hours) it would take to empty the swimming pool completely assuming the entrance to the pipe is well-rounded with negligible loss. Take the friction factor of the pipe to be 0.022. Using the initial discharge velocity, check if this is a reasonable value for the friction factor.

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A: Given : The velocity at r from the center line, V r =13 m/s here, r=R/2

Q: ty of 3.5 m/s. Determine the pressure drop per 10 m of the pipe. What is minor loss in pipe flow?…

A: given:density ρ=1252kg/m3μ=0.27kg/m.sdiameter D=6cm

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Q: The velocity profile for turbulent flow in a circular pipe is approximated as u(r) = umax(1 -…

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Q: What is the hydraulic grade line? How does it differ from the energy grade line? Under what…

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Q: 1. Water (p = 1000- kg H = 10-3 flows in a horizontal constant-area pipe; the pipe cross ms section…

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Q: 1. The head loss along the pipe segment 2. Velocity of flow 3. Reynold’s number

A:

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Q: Consider the problem of draining a hemispherical tank of radius H* feet that is full of water and…

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Q: hile traveling on a dirt road, the bottom of a car hits a sharp rock and a small hole develops at…

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Q: The space between the shaft and sleeve is filled with an oil of viscosity 6.5 stokes and density 900…

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Q: Explain how and why a siphon works. Someone proposes siphoning cold water over a 7-m-high wall. Is…

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Q: In fully developed laminar flow in a circular pipe, the velocity at R/2 (midway between the wall…

A: Given data as per the question the velocity at R/2 = 11 m/s

Q: 9. Two tanks filled with water (10 °C) at the same level are connected to each other with a…

A:

Q: Consider two identical 2-m-high open tanks filled with water on top of a 1-m-high table. The…

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Q: Water from a reservoir is raised in a vertical tube of internal diameter D = 30 cm under the…

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Q: The velocity profile in fully developed laminar flow in a circular pipe of inner radius R = 4 cm, in…

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Q: 4. A spherical vessel of 1.7m diameter is made from 12mm thick plate, and it is to be subject4 to a…

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Q: Determine (a) the head loss, (b) the pressure drop, and (c) the pumping power for water flowing…

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Q: Water is flowing through a 10-cm-diameter water pipe at a rate of 0.1 m3/s. Now a diffuser with an…

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Q: Heated air at 1 atm and 35°C is to be transported in a 150-m-long circular plastic duct at a rate of…

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Q: The drinking water needs of an office are met by large water bottles. One end of a 0.35-in-diameter,…

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Q: 4. A spherical vessel of 1.7m diameter is made from 12mm thick plate, and it is to be subject4 to a…

A:

Q: While traveling on a dirt road, the bottom of a car hits a sharp rock and a small hole develops at…

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Q: Water flows into a sink as shown in the figure below at a rate of 0.5m^3/hr. Determine the average…

A: Given data: Q=0.5 m3/hd=1 cm Need to determine the average velocity through each pipe.

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Q: Water is to be withdrawn from a 9-m-high water reservoir by drilling a 2.3-cm-diameter hole at the…

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.