Questions from Thermal Fluid Science

Q: Water at 15°C is drained from a large reservoir using

Water at 15°C is drained from a large reservoir using two horizontal plastic pipes connected in series. The first pipe is 13 m long and has a 10-cm diameter, while the second pipe is 35 m l...

Q: A semi-spherical tank of radius R is completely filled with

A semi-spherical tank of radius R is completely filled with water. Now a hole of cross-sectional area Ah and discharge coefficient Cd at the bottom of the tank is fully opened and water starts to flow...

Q: The water needs of a small farm are to be met by

The water needs of a small farm are to be met by pumping water from a well that can supply water continuously at a rate of 5 L/s. The water level in the well is 20 m below the ground level, and water...

Q: Water at 70°F flows by gravity from a large reservoir

Water at 70°F flows by gravity from a large reservoir at a high elevation to a smaller one through a 60-ft-long, 2-in-diameter cast iron piping system that includes four standard flanged elbows, a wel...

Q: A 2.4-m-diameter tank is initially filled

A 2.4-m-diameter tank is initially filled with water 4 m above the center of a sharp-edged 10-cm diameter orifice. The tank water surface is open to the atmosphere, and the orifice drains to the atmos...

Q: Consider the flow of air and water in pipes of the same

Consider the flow of air and water in pipes of the same diameter, at the same temperature, and at the same mean velocity. Which flow is more likely to be turbulent? Why?

Q: A 3-m-diameter tank is initially filled with water

A 3-m-diameter tank is initially filled with water 2 m above the center of a sharp-edged 10-cm diameter orifice. The tank water surface is open to the atmosphere, and the orifice drains to the atmosp...

Q: Reconsider Prob. 14–70. In order to drain the

Reconsider Prob. 14–70. In order to drain the tank faster, a pump is installed near the tank exit as in Fig. P14–71. Determine how much pump power input is necessar...

Q: Gasoline (ρ = 680 kg/m3 and ν = 4

Gasoline (ρ = 680 kg/m3 and ν = 4.29 × 10−7 m2/s) is transported at a rate of 240 L/s for a distance of 2 km. The surface roughness of the piping is 0.03 mm. If the head loss due to pipe friction is n...

Q: A 4-m-high cylindrical tank having a cross-

A 4-m-high cylindrical tank having a cross-sectional area of AT = 1.5 m2 is filled with equal volumes of water and oil whose specific gravity is SG = 0.75. Now a 1-cm-diameter hole at the bottom of th...