Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 8.27PP
Crude oil is flowing vertically downward through
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Show complete solution. Units must be included in all calculations. All numerical values should be rounded off to the nearestthousandths.
4.Oil with specific gravity 0.750 is flowing through a 6-in pipe under a pressure of 15.0 psi. If the total energyrelative to a datum plane 8.00 ft below the center of the pipe is 58.6 ft · lb/lb, determine the flow rate of the oil.
The volume flow rate of water is 662,73 liters/min. Calculate the maximum length of the pipe [m], which can be
used without cavitation? (NOTE: Take water temperature as 10 °C)
1.Shear stress velocity, u * has the link with mean flow velocity, u in a pipe for Re > 2300 . Calculate u* if u= 2 m/s with friction factor, f=0,001.
ANSWER: u* = 0,045 m /s
Chapter 8 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 8 - A 4-in-ductile iron pipe carries 0.20ft3/s of...Ch. 8 - Calculate the minimum velocity of flow in ft/s of...Ch. 8 - Calculate the maximum volume flow rate of fuel oil...Ch. 8 - Calculate the Reynolds number for the flow of each...Ch. 8 - Determine the smallest metric hydraulic copper...Ch. 8 - In an existing installation, SAE 10 oil (sg = 0.89...Ch. 8 - From the data in Appendix C, we can see that...Ch. 8 - Compute the Reynolds number for the flow of 325...Ch. 8 - Benzene (sg = 0.86 ) at 60c C is flowing at 25...Ch. 8 - Hot water at 80 C is flowing to a dishwasher at a...
Ch. 8 - A major water main is an 18 -in ductile iron pipe....Ch. 8 - ]8.12 An engine crankcase contains SAE 10 motor...Ch. 8 - Repeat Problem 8.12 for an oil temperature of 160...Ch. 8 - At approximately what volume flow rate will propyl...Ch. 8 - SAE 30 oil (sg = 0.89 ) is flowing at 45 L/min...Ch. 8 - Repeat Problem 8.15 for an oil temperature of 160...Ch. 8 - Repeat Problem 8.15, except the tube is 50 mm...Ch. 8 - Repeat Problem 8.17 for an oil temperature of 0 C.Ch. 8 - The lubrication system for a punch press delivers...Ch. 8 - After the press has run for some time, the...Ch. 8 - A system is being designed to carry 500 gal/min of...Ch. 8 - The range of Reynolds numbers between 2000 and...Ch. 8 - The water line described in Problem 8.22was a cold...Ch. 8 - In a dairy, milk at 100 F is reported to have a...Ch. 8 - In a soft-drink bottling plant, the concentrated...Ch. 8 - ]8.26 A certain jet fuel has a kinematic viscosity...Ch. 8 - Crude oil is flowing vertically downward through...Ch. 8 - Water at 75 C is flowing in a standard hydraulic...Ch. 8 - Fuel oil is flowing in a 4 -in Schedule 40 steel...Ch. 8 - A 3-in Schedule 40 steel pipe is 5000 ft long and...Ch. 8 - Benzene at 60 C is flowing in a DN 25 Schedule 80...Ch. 8 - As a test to determine the effective wall...Ch. 8 - Water at F flows from a storage tank through ft...Ch. 8 - A water main is an 18 -in-diameter concrete...Ch. 8 - Figure 8.12shows a portion of a fire protection...Ch. 8 - A submersible deep-well pump delivers 745 gal/h of...Ch. 8 - On a farm, water at 60 F is delivered from a...Ch. 8 - Figure 8.15 shows a system for delivering lawn...Ch. 8 - A pipeline transporting crude oil (sg = 0.93 ) at...Ch. 8 - For the pipeline described in Problem 8.39,...Ch. 8 - Water at 10 C flows at the rate of 900 L/min from...Ch. 8 - For the system shown in Fig. 8.17, compute the...Ch. 8 - Fuel oil (sg = 0.94 ) is being delivered to a...Ch. 8 - Figure 8.18 shows a system used to spray polluted...Ch. 8 - In a chemical processing system, the flow of...Ch. 8 - Water at 60 F is being pumped from a stream to a...Ch. 8 - For the pump described in Problem 8.46, if the...Ch. 8 - Gasoline at 50 F flows from point A to point B...Ch. 8 - Figure 8.20 shows a pump recirculating 300 gal/min...Ch. 8 - Linseed oil at 25 C flows at 3.65 in a standard...Ch. 8 - Glycerin at 25 C flows through a straight...Ch. 8 - Water at 75 C flows in a standard hydraulic copper...Ch. 8 - Benzene (sg = 0.88 ) at 60 C, flows in a DN 25...Ch. 8 - Water at 80 F flows in a 6 -in coated ductile iron...Ch. 8 - Water at 50 F flows at 15.0 ft3/s in a concrete...Ch. 8 - Water at 60 F flows at 1500 gal/min in a 10 -in...Ch. 8 - ]8.57 A liquid fertilizer solution (sg = 1.10 )...Ch. 8 - Crude oil (sg = 0.93 ) at 100 C flows at a rate of...Ch. 8 - Water at 65 C flows in a DN 40 Schedule 40 steel...Ch. 8 - Propyl alcohol flows in a standard hydraulic...Ch. 8 - ]3.61 Water at 70 F flows in a 12 -in-diameter...Ch. 8 - Heavy fuel oil at 77 F flows in a 6 -in Schedule...Ch. 8 - Water flows at a rate of 1.50ft3/s through 550 ft...Ch. 8 - Compute the energy loss as water flows in a...Ch. 8 - ]8.65 A water main is an 18 -in-diameter concrete...Ch. 8 - A fire protection system includes 1500 ft of 10...Ch. 8 - ]8.67 A standard hydraulic copper tube, 120 mm...Ch. 8 - Compute the energy loss as 2.0ft3/s of water flows...Ch. 8 - It is desired to flow 2.0ft3/s of water through...Ch. 8 - Specify a suitable size of new, clean Schedule 40...Ch. 8 - For the pipe selected in Problem 8.70, compute the...Ch. 8 - Compare the head loss that would result from the...Ch. 8 - In Problem 6.107, a theoretical flow rate of water...Ch. 8 - A pipeline is needed to transport medium fuel oil...Ch. 8 - Medium fuel oil at 25 C is to be pumped at a flow...Ch. 8 - A tremendous amount of study has gone into the...Ch. 8 - In a given installation, it is determined that the...Ch. 8 - "Laminar" fountains have become quite popular due...Ch. 8 - Use PIPE-FLO to model a straight horizontal run of...
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- Benzene flows through a 100 mm diameter pipe at a mean velocity of 3 m/s. Find discharge in liter per second.arrow_forwardWater discharge flow rate of 0.001 m3/s is delivered through the 30 mm cast iron pipe? €=0.15 Calculate the total losses in the pipe For minor losses, take K for the Entrance: 0.3 Exit: 0.5 Valve 1.8 the pipe Length L_687 marrow_forwardAs seen in Figure 3 below, the water from the tank 1 is pumped to the tank 2 with a flow rate of 5,664 liters/s, passing through a pipe with a diameter of 50.8 mm and a length of 121.92 m. Some of the local losses in the system are also shown on the figure. Calculate the effective power of the pump by taking the relative roughness ɛ / d = 0.001 Note: For all questions, pwater = 1000 kg/m³, g=9.81m/s^2 , the kinematic viscosity of water is 1.0219x106 m²/s and the questions can be solved by accepting the values that are not given.arrow_forward
- Water at 59 F flows through a straight section of a 6-in-ID cast-iron pipe with an average velocity of 4 fps. The pipe is 120 ft long, and there is an increase in elevation of 2 ft from the inlet of the pipe to its exit. Find the power required to produce this flow rate for the specified conditions. Solve fo the relative roughness onlyarrow_forwardWater flows in a 3.5-cm-diameter pipe so that the Reynolds number based on diameter is 2000 (laminar flow is assumed). The average bulk temperature is 10°C. Calculate the maximum water velocity in the tube in m/s. (Recall that um = 0.5ug)arrow_forwardA pump produces a flow rate of 75 Lpm. It has been established that the fluid velocity in the discharge line should be between 6 and 7.5 m/s. Determine the minimum and maximum pipe inside diameters that should be used. Show your work.arrow_forward
- Compute the average speed of water in a pipe with a diameter of 5.0 cm and delivering 2.5 m3 of water per hour. Select one: 0.25 m/s 0.13 m/s 0.03 m/s 0.35 m/sarrow_forwardBenzene (u=3.95 x10-4Pa-s) at 60°C is flowing in a 24.3mm steel pipe (absolute roughness =4.6 x10-5m from moody diagram) at the rate of 20L/min. The specific weight of the benzene is 8.62 =kN/m³. Calculate the pressure difference between two points 100m apart if the pipe is horizontal.arrow_forwardGiven below are pipe lengths, sizes, and connections. All pipes have a friction factor of 0.020. If the flow from Ato B is 5 cfs. a) Determine the head loss in feet in PIPE 1 and PIPE 2 b) Determine the head loss in feet in PIPE 5 c) Determine the flow in the upper branch pipe Q2 in cubic feet per second d) Determine the total head loss in feet between the inlet A and the outlet Darrow_forward
- Water at 80◦C flows steadily from a tank shown below at a volume flow rate of 475 L/min to a pump througha 62.7-mm diameter steel pipe. The roughness element size is 46 μm. The kinematic viscosity of water isν = μ/ρ = 3.60 × 10−7 m2/s. The tank is open to the air through a hole shown in the figure. If needed, usethe table and the Moody chart on the next page. (a) What is the pressure at the pump inlet?(b) It is desired to increase the pressure at the inlet of the pump while keeping the volume flow rate constant.If that is the only design constraint, what changes can be made to the existing system to achieve thenew design goal? List at least three suggestions.arrow_forwardQuestion 8 Two reservoirs are connected by a pipe whose total length is 360m.From the upper reservoir the pipe is 300mm in diameterfor a length of 150m and the remaining 210m is 450mm in diameter.The difference in water levels between the two reservoirs are 8m.Take f=0.006 for the smaller pipe and f=0.005 for the larger pipe.If all the changes in pipe sections are sharp and sudden, calculate the flow rate which can be delivered.arrow_forwardA long 0.3 m pipeline laid between two reservoirs carries a flowrate of 0.14 m3/s ofwater. A parallel pipe of the same friction factor is laid beside this one. Calculate the approximatediameter of the second pipe if it is to carry 0.28 m3/sarrow_forward
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