Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 8, Problem 8.29PP
Fuel oil is flowing in a
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1. An 80 mm schedule 40 steel pipe is 1800 m long and carries a lubricating oil between 2 points A and B such that the Reynolds number is 1200. Point B is 10 m higher than point A. The oil has a specific gravity of 0.85 and dynamic viscosity of 6.51 X 10-1 Pa.s. If the pressure at A is 345 KPa, calculate the pressure @ B.
2. Determine the energy loss for a sudden contraction from a 4 in schedule 80 steel pipe to a 1.5 in schedule 80 pipe for a flow rate of 250 gal/min.
3. Determine the equivalent length in meters of pipe of a quarter open gate valve placed in a DN 250 schedule 40 pipe.
1.
A fluid is having viscosity of 0.4 Ns/m² and relative density of 900 Kg/m² through a pipe of 25 mm with
a velocity of 3 m. Calculate the Reynolds number
An inclined pipe of 4-inch ID is used to transport a
viscous oil from one open-top container A to another
open-top container B. The specific gravity of the oil is
0.9 and the viscosity of the oil is 20 cp. The length of
the pipe is 100 ft. Oil levels in these two containers are
shallow and the inlet and outlet pressures across the
tube can be assumed to be identical – both 1 atm.
What is the angle needed to maintain a flow rate of oil
of 1 cuft / second? The levels of oil in A and B do not
change – oil is continually added to A at the rate of 1
cuft / second and is continuously removed from B at
the same rate.
A
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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- A 3-in Schedule 40 steel pipe is 5000 ft long and carries a lubricating oil between two points A and B such that the Reynolds number is 800. Point B is 20 ft higher than A. The oil has a specific gravity of 0.90 and a dynamic vis- cosity of 4 x 10lb-s/ft. If the pressure at A is 50 psig. calculate the pressure at B.arrow_forward1. 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_forwardDetermine the type of flow does the water has if it flow in a .5m diameter pipe with a velocity of .2m/s , dynamic viscosity is .0010016 Ns/m²arrow_forward
- P Flag question Calculate the Reynolds number of the flow of water flowing with the velocity of 1.5 m/s and the diameter of the pipe is 14 mm. Take dynamic viscosity of water is 1.14x10-3 Ns/m2. Reynolds numberarrow_forwardThe flow in the pipe becomes turbulent when the Reynolds number reaches 2000 (where Re is calculated using the mean velocity across the pipe). What is the maximum pressure drop along the pipe that can be achieved without the flow becoming turbulent?arrow_forwardCrude oil having a specific gravity of 0.93 and a viscosity of 4cP is draining by gravity from the bottom of the tank. The depth of the liquid above the drawoff connection in the tank is 6m. The line from the drawoff is 3-in. Schedule 40 pipe. Its length is 45m, and it contains one ell and two gate valves. The oil discharges into the atmosphere 9m below the drawoff connection of the tank. What flow rate, in cubic meters per hour, can be expected through the line? Illustrate the problem.arrow_forward
- 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.arrow_forward. In. 46 N Which step of the following steps is for use of a manometric tubes to measure the * differential pressure observe that the water level in theses two tubes coincides with the level in the water tank fill the viscometer with the test liquid whose viscosity is going to be determined change the slope of the tube to 10 degrees. record the value of the water level connect the pump to the upper plug of the tank with the non - return valve in the correct direction and pressurize the tank use the gauge in such away that the point of the hook indicates the correct water level in the tank. disassemble the piston and determine accurately its weight connect the manual pump to one of the upper values of the u tube fill the bucket with water and record its weight prepare scale to measure between 0 and 0.25 kg cover the piston with Vaseline for a best operation Which step of the following steps is for usearrow_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
- The head loss due to friction is not proportional to length of the pipe. Select one: True Falsearrow_forwardWater is flowing at the rate of 10 Kg/min in a pipe having an inside diameter I.D. of 2.067 ft. calculate the Reynolds number and show the type of flow (dynamic viscosity =8.007 x 10+ Pa.s) , calculate the mass flux .arrow_forwardSulfuric acid with a specific gravity of 1.98 and viscosity of 26.7 cP is flowing in a 35 mm diameter pipe. If the acid flow rate is 1000 L/min, determine the pressure drop due to friction for a 100 yards length of smooth pipe? Compute the headloss due to friction for an 80-mm diameter steel pipe of the same length.arrow_forward
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