Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Chapter 9, Problem 7RQ
- 7. A sludge mixture having a specific gravity of 2.93 and a viscosity of 0.09 grams per centimeter second [g/(cm s)] is pumped from a reactor to a holding tank. The pipe is a
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Send 20 degree Celsius of water at 4.0 [m3 / h]. How many inches of standard steel pipe should be used to set the average flow rate in the pipe to 1.5 ~ 2 [m / s]? At this time, determine the average flow rate and the flow of the fluid.
Send 20 degree Celsius of water at 4.0 [m3 / h]. How many [in] of standard steel pipe should be used to make the average flow rate in the pipe 1.5 ~ 2 [m / s]? At this time, determine the average flow rate and the flow of the fluid.
1. What is a fluid?
kg
[6 marks]
2. A tank is filled with oil with density p = 830; If the volume of the tank is V =
1.01m³ determine the amount of mass in the tank in kilograms. Show your
workings.
m³
[6 marks]
3. A pipe of diameter 0.18 m has a flow rate of 0.025 m³/s, what is the average
velocity in the pipe? Show your workings.
[6 marks]
4. The flow rate in a pipe is 1446 litres per minute, what is this in SI units
Show your workings.
)?
[5 marks]
5. The equation below is a simplified form of the continuity equation.
dm
dt CV
Σmin -Σmout
The derivative term with respect to time is which of the following:
a. The rate of change of the mass within a given control volume
b. Always zero by definition
c. Zero for transient time dependant flow conditions
d. Zero when the mass flow rate coming into the control volume is smaller
than the mass flow rate exiting the control volume
e. Zero when the mass flow rate entering the control volume is greater than
the mass flow rate leaving the…
Chapter 9 Solutions
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Ch. 9.1 - The heat loss (Q/t, in units of joules per second...Ch. 9.2 - A simple expression for the velocity of molecules...Ch. 9.2 - What are the dimensions of the value 6 in the...Ch. 9.4 - The Euler number is a function of the pressure...Ch. 9 - Complete the following table. Dimensions ...Ch. 9 - Complete the following table. Dimensions ...Ch. 9 - Calculate the numerical value of each of the...Ch. 9 - Calculate the numerical value of each of the...Ch. 9 - A fluid with a specific gravity of 0.91 and a...Ch. 9 - Brine, with a density of 1.25 grams per cubic...
Ch. 9 - When a simple turbine is used for mixing, the...Ch. 9 - History suggests that Newton developed his idea...Ch. 9 - It is proposed to create a set of dimensionless...Ch. 9 - 1. While researching fluid dynamics, you come...Ch. 9 - 2. While researching fluid dynamics, you came...Ch. 9 - 3. While researching fluid dynamics, you come...Ch. 9 - 4. The Arrhenius number (Ar) is the dimensionless...Ch. 9 - 5. The Biot number (Bi) is the dimensionless...Ch. 9 - 6. A biodegradable fuel having a specific gravity...Ch. 9 - 7. A sludge mixture having a specific gravity of...Ch. 9 - 8. Water (specific gravity = 1.02; viscosity =...Ch. 9 - 9. We have been asked to determine a set of...Ch. 9 - 10. The Peclet number is used in heat transfer in...Ch. 9 - 11. When a fluid flows slowly across a flat plate...Ch. 9 - 12. In modeling the flow of liquid in a piping...
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- This is not a graded question. Solve asaparrow_forwardIn the gap between the two plates, the lubricant flows in one direction (x) by the pressure gradient. Lubricants are incompressible Newtonian fluids, flows are laminates, and terminal effects are ignored. Find the maximum flow rate [m/s] when the pressure difference (△P/L) per unit length is 25000 Pa/m.Data: clearance between plates (B) = 6 mm, lubricant viscosity (μ) = 25 cP (1cP = 10-3 Pa·s), lubricant density (=) = 0.88 g/cm3arrow_forwardIn the gap between the two plates, the lubricant flows in one direction (x) by the pressure gradient. Lubricants are incompressible Newtonian fluids, flows are laminates, and terminal effects are ignored. Find the maximum flow rate [m/s] when the pressure difference (△P/L) per unit length is 25000 Pa/m.Data: clearance between plates (B) = 6 mm, lubricant viscosity (μ) = 25 cP (1cP = 10-3 Pa·s), lubricant density (=) = 0.88 g/cm3 Please.. explain more easyarrow_forward
- Sinav The volume flow rate of water is 650,53 liters/min. Calculate the maximum length of the pipe [m], which can be used without cavitation? (NOTE: Take water temperature as 10 °C) amış den Length D-0.07 m C-0.08 mm Uygula Elevation 650m Elevation 653 m Kalan S Yanıt: Kontrol et ayfa Sonraki sayfaarrow_forwardA 100 mm I.D. pipeline carries water flowing at a rate of 75 cubic meterper hour. A mercury manometer and a venturi meter are to be installed toprovide flow rate measurement. If the manometer is set to have amaximum reading of 1.25 m, determine the following:(a) the needed throat diameter of the venturi [mm](b) power necessary to operate the meter [kW] Density and viscosity of water is 999 kg/m3 and 1 cP.arrow_forwardShow diagrams and calculations to support your answer. Suppose you are a group of cadet engineers given by your department manager a “simple” task of choosing an appropriate flow meter to install in a straight horizontal pipeline of the given specifications: Nominal diameter: 6 inches Schedule Number: 40 Material of Construction: steel Water is to flow through the pipeline within the range of 600 to 625 gal/min at a temperature of 27°C. You have the following choices in terms of the flow meter: [a] a venturi meter [b] an orifice meter [c] a rotameter [d] a commercial flowmeter of your choice, other than the above-mentioned ones Which would you recommend? Tips: [1] Base your choice on the following criteria: [1.a] pressure loss due to the presence of the flow meter [1.b] relative cost (and ease) of installation [1.c] relative cost of equipmentarrow_forward
- A pipe system takes water from a pool and circulates it through a filter using a pump. Answer the following assuming the pipe has a relative roughness, �/�=0.008ϵ/D=0.008, the diameter of the pipe is �=2.09[cm]D=2.09[cm], the total length of pipe is �=88[m]L=88[m], and the loss coefficients are ������=1.5Kelbow=1.5, ����=0.8Kent=0.8, �����=1Kexit=1, ������=7.9Kvalve=7.9, and �������=29Kfilter=29. The pump that is attached has a linear manufacturer's curve of:ℎ����=−117�+31.3hpump=−117Q+31.3 What will be the velocity of the water in the pipe?arrow_forwardPlease sol with steparrow_forwardThe 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)arrow_forward
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