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 8.54PP
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Determine the average velocity in m/s for water flow in a 2 in diameter pipe, Schedule 40 chlorinated polyvinyl chloride (CPVC) pipe (2.375 in outside diameter and 2.047 in inside diameter) carrying cold water at a volumetric flow rate of 40 gpm.
The valve in a piping system causes a 3.1 m head loss. If the velocity of the flow is 4 m/s, the loss coefficient of this valve is (a) 1.7 (b) 2.2 (c) 2.9 (d) 3.3 (e) 3.8
Which of the following Reynold’s numbers would always represent turbulent flow in a circular pipe?
A: 9000
B: 200
C: 4000
D: 2300
I know the answer is A, but why???
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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- Rate the flow inside a pipe with Re = 1.8x10^4 and ε/D = 0.027. A: Turbulent totally rough B. Hydraulically smooth turbulence C. Laminar, with f=64/Re D.Transient roughness turbulencearrow_forwardDetermine the average velocity for water flow in a 2 in diameter pipe, Schedule 40 chlorinated polyvinyl chloride (CPVC) pipe (2.375 in outside diameter and 2.047 in inside diameter) carrying cold water at a volumetric flow rate of 40 gpm.arrow_forwardWater flows through a 2in.diameter (5.08 cm) tube that suddenly contracts to 1 in. diameter (2.54 cm). The pressure drop across the contraction is 3.45 kPa. Determine the volume flow rate.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_forwardchoose the correct answer Q1- The pipe diameter is: * a) Directly proportional to fluid velocity b) Inversely proportional to mass flow rate c) Directly proportional to mass flow rate d) None of all abovearrow_forwardWater flows through a measuring nozzle of 40mm diameter in a pipe of 75mm in diameter at a flow rate of 0.015 m3/s. Determine the pressure difference through the nozzle if the temperature is (a) 10°C, (b) 80°C.arrow_forward
- The diameter of an open topped tank 1.5 m high increases uniformly from 4.2 m at the base to 6 m at the top. Discharge from the base of the tank takes place through a 75 mm diameter pipe which is 3 m in length. The pipe discharges the water to the atmosphere 1.5 m below the base of the tank. Initially, the tank is fully filled with water. Take f =0.01. Find the time to empty the tank.arrow_forwardWater at 100°F is flowing through a straight 4-in schedule 40 pipe at a rate of 1 gal/min. The length of the pipe is 10 ft, find the velocity at the center of the pipe in feet per second?A. 0.0378B. 0.0504C. 0.0454D. 0.0252arrow_forward1) Which of the following statement is NOT correct about piping network? a) In parallel pipes, the flow rate is proportional to its diameter and inversely proportional to its length and friction factor. b) When analyzing the piping network, conservation of mass throughout the system must be satisfied. c) In piping systems with pumps, the Bernoulli equation should be corrected by introducing a kinetic energy correction factor. d) The algebraic sum of head losses for all loops equal to zero. 2) The EGL is always a distance V2/2g above the HGL. True or Falsearrow_forward
- 2. Water at 80 ° F, flows at a rate of 4.30 ft/s in a pipe having an inlet diameter of 1.0 inch until it flows into a section with pipe diameter that abruptly increases. Determine the: a. Temperature change, °F, of the water if the outlet diameter is 1.5 inches? b. Temperature change, °F, of the water if the outlet diameter is 3.0 inches? C. Maximum temperature, °F, change for an enlargement of pipe.arrow_forwardTopics: Fundamental of fluid flow Water flows upwards in a vertical pipeline of gradually varyingsection from point 1 to point 2, which is 1.5m above point 1, at the rate of0.9m^3/s. At section 1 the pipe diameter is 0.5m and pressure is 800 kPa. Ifpressure at section 2 is 600 kPa, determine the pipe diameter at that location.Neglect losses.arrow_forwardWater at 20∘C∘C having the density of ρw�� = 998.3 kg/m3kg/m3 and kinematic viscosity of νw=1.00(10−6)m2/s��=1.00(10−6)m2/s is pumped from a lake into the tank on the truck using a 50-mmmm-diameter galvanized iron pipe with ε� = 0.15 mmmm (Figure 1). The pump performance curve is as shown in (Figure 2). The total length of the pipe is 50 mm. Determine the maximum volumetric flow the pump will generate. Include the minor losses of the five elbows. Express your answer to two significant figures and include the appropriate units.arrow_forward
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