Applied Fluid Mechanics: Global Edition
7th Edition
ISBN: 9781292019611
Author: Robert Mott
Publisher: Pearson Higher Education
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Chapter 11, Problem 11.9PP
A hydraulic oil is flowing in a drawn steel hydraulic tube with an OD of
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Water, with a density of 1000 kg/m3 and a dynamic viscosity of 0.0013 kg/ms, is flowing through a pipe of radius 28 mm. Calculate the critical velocity?
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Chapter 11 Solutions
Applied Fluid Mechanics: Global Edition
Ch. 11 - Water at 10C flows from a large reservoir at the...Ch. 11 - For the system shown in Fig. 11.14, kerosene (...Ch. 11 - Figure 11.15 shows a portion of a hydraulic...Ch. 11 - Figure 11.16 shows part of a large hydraulic...Ch. 11 - Oil is flowing at the rate of 0.015m3/s in the...Ch. 11 - For the system shown in Fig. 11.18, calculate the...Ch. 11 - A liquid refrigerant flows through the system,...Ch. 11 - Water at 100F is flowing in a 4-in Schedule 80...Ch. 11 - A hydraulic oil is flowing in a drawn steel...Ch. 11 - In a processing plant, ethylene glycol at 77F is...
Ch. 11 - Water at 15C is flowing downward in a vertical...Ch. 11 - Turpentine at 77F is flowing from A to B in a 3...Ch. 11 - ]11.13 A device designed to allow cleaning of...Ch. 11 - Kerosene at 25C is flowing in the system shown in...Ch. 11 - Water at 40C is flowing from A to B through the...Ch. 11 - Oil with a specific gravity of 0.93 and a dynamic...Ch. 11 - Determine the required size of new Schedule 80...Ch. 11 - What size of standard hydraulic copper tube from...Ch. 11 - Water at 60F is to flow by gravity between two...Ch. 11 - The tank shown in Fig. 11.24 is to be drained to a...Ch. 11 - Figure 11.25 depicts gasoline flowing from a...Ch. 11 - For the system in Fig. 11.26, compute the pressure...Ch. 11 - For the system in Fig. 11.26, compute the total...Ch. 11 - For the system in Fig. 11.26 specify the size of...Ch. 11 - A manufacturer of spray nozzles specifies that the...Ch. 11 - Specify the size of new Schedule 40 steel pipe...Ch. 11 - Refer to Fig. 11.27. Water at 80C is being pumped...Ch. 11 - For the system shown in Fig. 11.27 and analyzed in...Ch. 11 - In a water pollution control project, the polluted...Ch. 11 - Repeat Problem 11.29, but use a 3-in Schedule 40...Ch. 11 - Water at 10C is being delivered to a tank on the...Ch. 11 - If the pressure at point A in Fig. 11.29 is 300...Ch. 11 - Change the design of the system in Fig. 11.29 to...Ch. 11 - It is desired to deliver 250 gal/min of ethyl...Ch. 11 - For the system shown in Fig. 11.30, compute the...Ch. 11 - Repeat Problem 11.35, but consider the valve to be...Ch. 11 - Repeat Problem 11.35, but consider the valve to be...Ch. 11 - Figure 11.31 depicts a DN 100 Schedule 40 steel...Ch. 11 - Repeat Problem 11.38 but replace the globe valve...Ch. 11 - Repeat Problem 11.38 but use a DN 125 Schedule 40...Ch. 11 - Repeat Problem 11.38, but replace the globe valve...Ch. 11 - It is desired to drive a small,...Ch. 11 - Figure 11.32 shows a pipe delivering water to the...Ch. 11 - Repeat Problem 11.43, except consider that there...Ch. 11 - A sump pump in a commercial building sits in a...Ch. 11 - For the system designed in Problem 11.45, compute...Ch. 11 - Figure 11.33 shows a part of a chemical processing...Ch. 11 - For the system described in Problem 11.47, and...Ch. 11 - For the system described in Problem 11.47, and...Ch. 11 - For the system described in Problem 11.47, and...Ch. 11 - Analyze the system shown in Fig. 11.11 with...Ch. 11 - Create a program or a spreadsheet for analyzing...Ch. 11 - Create a program or a spreadsheet for determining...
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- Calculate the Reynolds number, Re for water flow in a circular pipe. The diameter of the pipe is 50 mm, the density of water is 998 kg/m³, the volumetric oil flowrate is 720 L/min, and the dynamic viscosity of water is 1.2 centipoisearrow_forwardA service truck transfers hydraulic oil with a kinematic viscosity of 200 cSt through a 2-in. I.D. hose 100 ft. long to a bulldozer at a flow rate of 50 gal/min. What is the pressure drop between the service truck and the bulldozer if the fluid Sg is 0.85?arrow_forwardThe picture below depicts a system for delivering chocolate ganache in liquid form. Thenozzle on the end of the hose requires 140 kPa of pressure to operate effectively. Thehose is smooth plastic with an ID of 25 mm. The chocolate has a specific gravity of 1.1and a dynamic viscosity of 2.0 X 10-3 Pa*s. If the length of the hose is 85 m and there is a change in height of 10 m, determine(a) the power delivered by the pump to the ganache and(b) the pressure at the outlet of the pump.Neglect the energy losses on the suction side of the pump. The flow rate is 85 L/min.arrow_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_forward1. 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.arrow_forward14. An oil is in laminar flow in a ½ in ID tube at 6 gal/min. The oil viscosity is 300 centipoises and its density is 60 lb/ft3. Calculate the pressure drop per foot of pipe length in psia. a. 0.45 b. 112 c. 42.1 d. 7.84arrow_forward
- Recommend the low cost flow meter used in industries for measuring flow that provides negligible loss of head in the pipeline. Discuss its construction and working. A venturi tube of throat diameter 10 cm is placed in a pipe of diameter 20 cm. The volumetric flow rate through the venturi tube is 0.02 m3/ sec. [Given: viscosity of water = 10–3 Pas]. Determine the Reynolds number and the upstream to throat differential pressure developed.arrow_forward.A venturi meter is used to measure liquid flow rate of 7500 litres per minute. The difference in pressure across the venturi meter is equivalent to 8 m of the flowing liquid. The pipe diameter is 19 cm. Calculate the throat diameter of the venturi meter. Assume the coefficient of discharge for the venturi meter as 0.96arrow_forwardA plugged dishwasher sink with the dimensions of 15 in. ✕ 19 in. ✕ 9 in. is being filled with water from a faucet with an inner diameter of 1 in. It takes 210 seconds to fill the sink to its rim. Imagine the plug of the sink leaks. If it now takes 230 seconds to fill the sink to its rim, estimate the mass-flow rate of the leak (in lbm/s). lbm/sarrow_forward
- A venture meter having a throat diameter d2 of 100mm is fitted into a pipeline which has a diameter d1 of 250mm through which oil of specific gravity 0.9 is flowing. The pressure difference between the entry and throat tapings is measured by a u tube manometer containing mercury of specific gravity 13.6 and the connections are filled with the oil flowing in the pipeline. If the difference of level indicated in the u-tube is 0.63m, calculate the theoretical discharge through the meter.arrow_forwardShow complete solution and formulas used. Show the schematic diagram too. Calculate the required pipe diameter to avoid cavitation, if the pump delivers Q = 30US gallon/min water from a closed tank, where the pressure (above the water level) is p = 40kPa. The equivalent length of the smoothened concrete pipe on the suction side is 12m while the suction flange of the pump is 8m below the water level. The vapour pressure at the given water temperature is 2.8kPa. The required net positive suction head is NPSHr = 3.2m.arrow_forwardMethane gas is being pumped through a 305-m length of 52.5-mm-ID steel pipe at the rate of 41.0 kg/m2• s. The inlet pressure is P1 = 345 kPa abs. Assume isothermal flow at 288.8 K.a. Calculate the pressure P2 at the end of the pipe. The viscosity is 1.04 x 10 5 Pa·s.b. Calculate the maximum velocity that can be attained at these conditions and compare with the velocity in part (a).arrow_forward
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