Applied Fluid Mechanics
7th Edition
ISBN: 9780133414622
Author: UNTENER
Publisher: YUZU
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Textbook Question
Chapter 2, Problem 2.39PP
In the rotating-drum viscometer, describe how the velocity gradient is created in the fluid to be measured.
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Questions
(1) With the Brookfield viscometers, why each spindle must be calibrated and used in the
specified container to obtain the "true" viscosity of the sample fluid?
• What is the viscosity of the fluid in the viscometer shown below? The length of the viscometer
is 60 cm, the outer diameter of the inner cylinder is 12 cm, the gap between the two cylinder is
0.15 cm, number of revolutions per unit time of inner cylinder is 300 rpm, and the torque is
measured to be 1.8 N.m.
-Stationary
cylinder
i- 300 rpm
Shaft
Fluid
0. 106 N s/m?
0.020 N - s/m?
0. 158 N - s/m?
0.013 N - s/m?
The density of an object is 2.6 kg /m. What is the specific gravity of this object? Know the
density of water at 4 degree C is 1000 kg /m.
O26
O 0.0026
O.0026 kg /m
O26 kg /m
Chapter 2 Solutions
Applied Fluid Mechanics
Ch. 2 - Define shear stress as it applies to a moving...Ch. 2 - Define velocity gradient.Ch. 2 - State the mathematical definition for dynamic...Ch. 2 - Which would have the greater dynamic viscosity, a...Ch. 2 - State the standard units for dynamic viscosity in...Ch. 2 - State the standard units for dynamic viscosity in...Ch. 2 - State the equivalent units for poise in terms of...Ch. 2 - Why are the units of poise and centipoise...Ch. 2 - State the mathematical definition for kinematic...Ch. 2 - State the standard units for kinematic viscosity...
Ch. 2 - State the standard units for kinematic viscosity...Ch. 2 - State the equivalent units for stoke in terms of...Ch. 2 - Why are the units of stoke and centistoke...Ch. 2 - Define a Newtonian fluid.Ch. 2 - Define a non-Newtonian fluid.Ch. 2 - Give five examples of Newtonian fluids.Ch. 2 - Give four examples of the types of fluids that are...Ch. 2 - Appendix D iS gives dynamic viscosity for a...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D iS gives dynamic viscosity for a...Ch. 2 - Appendix D iS gives dynamic viscosity for a...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - Appendix D gives dynamic viscosity for a variety...Ch. 2 - If you want to choose a fluid that exhibits a...Ch. 2 - Which type of viscosity measurement method uses...Ch. 2 - In the rotating-drum viscometer, describe how the...Ch. 2 - In the rotating-drum viscometer, describe how the...Ch. 2 - What measurements must be taken to determine...Ch. 2 - Define the term terminal velocity as it applies to...Ch. 2 - What measurements must be taken to determine...Ch. 2 - Describe the basic features of the Saybolt...Ch. 2 - Are the results of the Saybolt viscometer tests...Ch. 2 - Does the Saybolt viscometer produce data related...Ch. 2 - Which type of viscometer is prescribed by SAE for...Ch. 2 - Describe the difference between an SAE 20 oil and...Ch. 2 - What grades of SAE oil are suitable for...Ch. 2 - What grades of SAE oil are suitable for...Ch. 2 - If you were asked to check the viscosity of an oil...Ch. 2 - If you were asked to check the viscosity of an oil...Ch. 2 - Prob. 2.53PPCh. 2 - The viscosity of a lubricating oil is given as 500...Ch. 2 - Using the data from Table 2.5. report the minimum,...Ch. 2 - Convert a dynamic viscosity measurement of 4500 cP...Ch. 2 - Convert a kinematic viscosity measurement of 5.6...Ch. 2 - The viscosity of an oil is given as 80 SUS at...Ch. 2 - Convert a viscosity measurement of 6.5x103 Pa.s...Ch. 2 - An oil container indicates that it has a viscosity...Ch. 2 - In a falling-ball viscometer, a steel ball 1.6 mm...Ch. 2 - A capillary tube viscometer similar to that shown...Ch. 2 - In a falling-ball viscometer, a steel ball with a...Ch. 2 - A capillary type viscometer similar to that shown...Ch. 2 - A fluid has a kinematic viscosity of 15.0 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 55.3 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 188 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 244 mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 153mm2/s at...Ch. 2 - A fluid has a kinematic viscosity of 205mm2/s at...Ch. 2 - An oil is tested using a Saybolt viscometer and...Ch. 2 - An oil is tested using a Saybolt viscometer and...Ch. 2 - Prob. 2.73PPCh. 2 - Prob. 2.74PPCh. 2 - An oil is tested using a Saybolt viscometer and...Ch. 2 - Prob. 2.76PPCh. 2 - Convert all of the kinematic viscosity data in...Ch. 2 - Use a spreadsheet to display the values of...
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- Explain the importance of using heavy fluids such as mercury as manometric fluids in measuring pressure of a static fluidarrow_forwardQ1: Calculate the dynamic viscosity of an oil, which is used for lubrication between a rectangular plate of size 0.75m x 0.55 m and an inclined plane with angle of inclination 45' as shown in figure 1. The weight of the rectangular plate is 0.5 kN and it slides down the inclined plane with a uniform velocity of 0.35 m/s. The thickness of oil film is 1.75 mm. Then, state the scope for this obtained viscosity? Recangdar plabe -oil Inclined plane Figure 1arrow_forwardHEATING UNIT THERMOMETER LIQUID BATH Fluid CONTAINER CORK 60 CC- RESERVOIR Figure 4: Schematic for SAYBOLT viscometer. a) Explain the operation procedures and constraints of the different viscometers especially the used one. b) Explain, with examples, the effects of temperature and shear forces on theNewtonian and non-Newtonian fluids. c) Illustrate the results of the viscosity test of the above motor oil then f it the viscosity function of temperature to the following logarithmic quadratic correlation as described below. Find the values for the constants a, b, and c. Takeu at T = 0°C. То + c T 10 In- = a + b Mo T d) What is the viscosity of the used above equation motor oil at 280 K, 305 K and 3 20 K? You can use thearrow_forward
- I need the answer as soon as possiblearrow_forwardIf the viscosity of the fluid increases as the shear rate increases, a. The fluid is shear thickening b. The fluid is Newtonian C. The fluid is Casson fluid O d. The fluid is shear thinning TOSarrow_forwardPlease help me with this problem clearly. List two sources of error in the water-filled tube and pressure gauge method of measuring head for a hydro system and how to avoid them. Using this method, a series of measurements up a hill to the source of the stream produces the following heights: 1.5m, 0.7m, 1.0m, 1.9m, 1.6m, 0.3m, and 0.8m. What is the total head for this site? If the flow rate was 0.5 m3s-1, calculate the power available in this stream?arrow_forward
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