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 8.7PP
From the data in Appendix C, we can see that automotive hydraulic oil and the medium machine tool hydraulic oil have nearly the same kinematic viscosity at
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QUESTION 4
Calculate the head loss and the pressure drop due to fluid friction when water, with a density of
62.4 lbm /ft3 and a viscosity of 1 centipoise, flows through a 20 foot length of 4 inch steel pipe
at a velocity of 6 ft/sec. The relative roughness of the pipe is 5 x 104. The inside diameter of a
4 inch pipe is 4.026 inches and it's viscosity is 1 centipoise = 6.72 x 104 lbm/ft sec.
Use g=32.2 */sec2 (9.81 m/s2) and 60°F (16°C) water unless told to do otherwise.• Google schedule-40 pipe’s thickness at different nominal size to obtain the innerdiameter of the pipe for accurate determinaLon of flow velocity.• Must show your work to support your selecLon. Otherwise, no points will be given.• No peer discussion is allowed.. A cylindrical tank 5 ft high has a constant diameter of 4 ft is full of water. The tank has a hole2. A cylindrical tank 5 * high has a constant diameter of 4' is full of water. The tank has a holein its bo]om that measures 0.1ft^2. All losses are insignificant. How long will it take for the tankto empty? Note that you can NOT assume a staLc head and constant flow rate because thewater head in the tank decreases as the water flows out of the tank
(A) 35 sec(B) 70 sec(C) 105 sec(D) 140 sec
Calculate the Reynolds number for the flow of each of the following fluids in a 2-in Schedule 40 steel pipe if the vol-ume flow rate is 0.25 ft3 / s: (a) water at 60F, (b) acetone at 77F, (c) castor oil at 77F, and (d) SAE 10 oil at 210F (sg = 0.87).
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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- 1. What is the likelihood that a flow with an average velocity of 0.15 f t/s in a 6 in. water pipe is laminar? Find the speed at which the flow will always be laminar. 2. If the critical Reynolds number for a river is 2000 based on average velocity and depth, what is the maximum speed for laminar flow in a river 10 f t deep? 2 f t deep? Do you expect any river flow to be laminar?.arrow_forwardB1. A water with viscosity 11.4x10-3 poise is flowing through a pipe of diameter 300 mm at the rate of 500 litres per sec. Find the Reynold's Number & the head lost due to friction in the pipe of length 1 km. (Enter only the values by referring the unit given. Also upload the hand written answers in the link provided) The velocity of flow of water (in m/s) is The value of Reynold's Number is The frictional loss in the pipe (in m) isarrow_forwardMechanical-Energy Balance and Friction Losses. Hot water is being discharged from a storage tank at the rate of o.223 ft3/s. The process flow diagram and conditions are the same as given in Example 2.10-6, except for different nominal pipe sizes of schedule 40 steel pipe as follows. The 20-ft-long outlet pipe from the storage tank is 1-in. pipe instead of 4-in. pipe. The other piping, which was 2-in. pipe, is now 2.5-in. pipe. Note that now a sudden expansion occurs after the elbow in the 13-in. pipe to a 2}-in pipe.arrow_forward
- 1. Oil with a density of 910 kg/m³ and viscosity of 0.0019 m²/s is pumped through a 150 mm diameter pipeline at a rate of 20 tonnes per hour. Calculate the Reynolds number and determine the nature of flow. (laminar) 2. For the geometry below determine the hydraulic mean depth and the nature of flow when a velocity is 0.2 m/s, density is 980 kg/m³ and viscosity is 3 x 10 * Pa.s. Note: the shaded area is the wetted section. (turbulent) 46 mm 3. For the geometry below determine the hydraulic mean depth and the nature of flow when velocity is 0.2 m/s, density is 980 kg/m³ and viscosity is 3 x 10 Pa.s. Note: the shaded area is the wetted section. (turbulent) 56 mm 65 mm 65 mmarrow_forwardPlease solve Correctly as fast as. 4.- A 295.15K fluid with a density of 990 kg/m^3 and a viscosity of 4.6 kg/m. s, passes at a speed of 0.75 kg/s through a stainless steel pipe with an internal diameter of 64 mm. a) Calculate the Reynolds number and determine the flow regime. b) Calculate the velocity of the flow in m^3/s necessary for a Reynolds number of 2300 and the velocity in m/s.arrow_forwardPlease compute the Reynolds number of an oil (0.8 specific gravity, 0.8 cp viscosity) flowing in a pipe of 1- inch diameter at a velocity of 6 ft/s. Is this flow laminar or turbulent?arrow_forward
- Oil of viscosity 0.75 poise and specific weight 8436 N/m flows in a 0.25 m diameter pipe with a velocity of 0.88 m/s. Determine the Reynolds number and the type of flow.arrow_forwardDetermine the Reynolds number for a flow of 25 ° C water in a 2 in diameter sanitary pipe at a rate of 0.15 kg / second. What are the flow characteristics? a. Reynold number = Answer. b. The flow characteristics arearrow_forwardFluid with kinematic viscosity of 0.00015 ft2/s flows through a pipe of diameter 9 in. What is the maximum velocity for laminar flow?arrow_forward
- TURBULENT FLOW 2 63 6.25. Water at 20°C flows in a 4-in. schedule 40 pipe at a Reynolds number of 55 000. Determine the velocity distribution and eddy viscosity distribution using Pai's equations. Work in English units.arrow_forwardA liquid having a density of 801 kg/m3 and a viscosity of 1.49x10-3 Pa.s is flowing through a horizontal straight pipeat a velocity of 4.57 m/s. The commercial steel pipe is 1.5-in nominal pipe size, schedule 40. For a length of pipe of61m, do as followsa. Calculate the friction loss Ff. b. For a smooth tube of the same inside diameter, calculate the friction loss. What is the percent reduction of Ff forthe smooth tube?arrow_forwardUse g=32.2 */sec2 (9.81 m/s2) and 60°F (16°C) water unless told to do otherwise.• Google schedule-40 pipe’s thickness at different nominal size to obtain the innerdiameter of the pipe for accurate determinaLon of flow velocity.• Must show your work to support your selecLon. Otherwise, no points will be given.• No peer discussion is allowed.1. A schedule-40 pipe necks down from 24 in at point A to 12 in at point B. 8 *3/sec of 60°Fwater flow from point A to point B. The pressure head at point A is 20 *. FricLon is insignificantover the distance between points A and B. What are the magnitude and direcLon of theresultant force on the water? (A) 2900 lbf; toward A(B) 3500 lbf; toward A(C) 2900 lbf; toward B(D) 3500 lbf; toward Barrow_forward
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