Homework Answers
True
Viscousity is the property of a fluid which resists its
- flow
- movement
- change in shape.
The materials which do not have viscousity are said to have fluidity .
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Viscosity is resistance of a fluid (liquid or gas) to a change in shape, or movement...
(b) A Newtonian liquid of viscosity 0.1 N s m2 is flowing through a pipe of...
(b) A Newtonian liquid of viscosity 0.1 N s m2 is flowing through a pipe of 25 mm diameter and 20 m in length, and the pressure drop is 105 Nm2. As a result of a process change a small quantity of polymer is added to the liquid and this causes the liquid to exhibit non-Newtonian characteristics; its rheology is described adequately by the power-law model and the flow index is 0.33. The apparent viscosity of the modified fluid is...
tafp 150 quiz 3 Viscosity does not change with temperature. A. true B false 2. The...
tafp 150 quiz 3
Viscosity does not change with temperature. A. true B false 2. The primary function of the liquid in hydraulic system is to A. clean system parts B. remove heat from the system C. transmit energy to do the work the system is designed to D. prevent rust and corrosion of system components 3. The amount of friction is constant, even with varying forces pu the surfaces together. A true B. false 4. The cleanliness of the...
This question is designed to test your general knowledge on the heat transfer and extended surfaces with fins. Construct the complete resistance circuit to the geometry/scenario seen below: There is...
This question is designed to test your general knowledge on the heat transfer and extended surfaces with fins. Construct the complete resistance circuit to the geometry/scenario seen below: There is a pipe with liquid flow inside. That pipe has a direct contact with a solid slab (wall) that is composed of seven different materials. Each color or shape denotes a different solid part. At the outer surface, there exist six pin fins. Arrows indicate fluid flow (liquid or gas). You...
3. Because of the change in viscosity of water, a membrane design for cold water will...
3. Because of the change in viscosity of water, a membrane design for cold water will have a higher flux and be able to treat a greater flow rate at a higher temperature. True of false? Why?
1. True or False: Hydrogen bonding is a type of dipole-ion interaction 2.True or False: A...
1. True or False: Hydrogen bonding is a type of dipole-ion interaction 2.True or False: A noble gas can exhibit London Foces. 3. is the resistance to flow, reflecting how easily molecules move past one another Select one: a. Vapor Pressure b. Cohesion c. Surface Tension d. Viscosity
6: (a) Use the scaling laws to estimate the change of volumetric flow and pressure drop per unit length in a circular tube if the radius of the tube is reduced by a factor of 10. The pressure dro...
6: (a) Use the scaling laws to estimate the change of volumetric flow and pressure drop per unit length in a circular tube if the radius of the tube is reduced by a factor of 10. The pressure drop in a capillary tube is given by AP- 8uVavg.Lia. Here, L length of tube, a is the radius, g is the average speed of fluid and u is the viscosity). (b) Evaluate the resistance per unit length (R/L) for water flow...
Chemical Engineering Fluid Mechanics. Ron Darby u UUUUL) 26. A gas bubble of diameter d rises...
Chemical Engineering Fluid Mechanics. Ron Darby
u UUUUL) 26. A gas bubble of diameter d rises with velocity V in a liquid of density p and viscosity u. (a) Determine the dimensionless groups that include the effects of all the significant variables, in such a form that the liquid viscosity appears in only one group. Note that the driving force for the bubble motion is buoy- ancy, which is equal to the weight of the displaced fluid. (b) You want...
[Viscosity Questions] about chemistry: (multiple choice about viscosity) Please help. Thanks!! Explain each one thanks! 1....
[Viscosity Questions] about chemistry: (multiple choice about viscosity) Please help. Thanks!! Explain each one thanks! 1. A fluid is considered "Newtonian" if: a) it experience laminar flow b) η is independent of the velocity gradient c) η is a constant d) the shearing force is exerted in the direction of the flow e) all of the above 2. The viscosity η is a function of: a) temperature b) Pressure c) composition d) volume e) a, b, and c are correct...
The state of matter for an object that has neither definite shape nor definite volume is...
The state of matter for an object that has neither definite shape nor definite volume is True or false? Juice freezing into a popsicle is an example of a physical change. freezing a liquid,boiling a liquidcondensing a gas Which of the following is a chemical change? Brass,Ammonia,Air,Carbon,Water,Gold are compounds? element is oxygen? Helium is an example of a homogeneous mixture or a compound? homogeneous mixture can it be vodka ? pure substance is water ?
5) Consider the phase diagram for carbon dioxide(10). Supercritical fluid Solid Liquid Pressure (atm) -78.5 -56.4...
5) Consider the phase diagram for carbon dioxide(10). Supercritical fluid Solid Liquid Pressure (atm) -78.5 -56.4 Temperature (°C)— a) What is the critical temperature for carbon dioxide? b) What is the critical pressure for carbon dioxide? c) What phase(s) is/are present at -10°C and 30 atm. d) What phase(s) is/are present at -60°C and 10 atm. - e) What phase(s) is/are present at-78.5°C and 1 atm. f) What phase(s) is/are present at-56.4°C and 5.11 atm. g) What is the normal...
(b) A Newtonian liquid of viscosity 0.1 N s m2 is flowing through a pipe of 25 mm diameter and 20 m in length, and the pressure drop is 105 Nm2. As a result of a process change a small quantity of polymer is added to the liquid and this causes the liquid to exhibit non-Newtonian characteristics; its rheology is described adequately by the power-law model and the flow index is 0.33. The apparent viscosity of the modified fluid is...
tafp 150 quiz 3
Viscosity does not change with temperature. A. true B false 2. The primary function of the liquid in hydraulic system is to A. clean system parts B. remove heat from the system C. transmit energy to do the work the system is designed to D. prevent rust and corrosion of system components 3. The amount of friction is constant, even with varying forces pu the surfaces together. A true B. false 4. The cleanliness of the...
This question is designed to test your general knowledge on the heat transfer and extended surfaces with fins. Construct the complete resistance circuit to the geometry/scenario seen below: There is a pipe with liquid flow inside. That pipe has a direct contact with a solid slab (wall) that is composed of seven different materials. Each color or shape denotes a different solid part. At the outer surface, there exist six pin fins. Arrows indicate fluid flow (liquid or gas). You...
3. Because of the change in viscosity of water, a membrane design for cold water will have a higher flux and be able to treat a greater flow rate at a higher temperature. True of false? Why?
6: (a) Use the scaling laws to estimate the change of volumetric flow and pressure drop per unit length in a circular tube if the radius of the tube is reduced by a factor of 10. The pressure drop in a capillary tube is given by AP- 8uVavg.Lia. Here, L length of tube, a is the radius, g is the average speed of fluid and u is the viscosity). (b) Evaluate the resistance per unit length (R/L) for water flow...
Chemical Engineering Fluid Mechanics. Ron Darby
u UUUUL) 26. A gas bubble of diameter d rises with velocity V in a liquid of density p and viscosity u. (a) Determine the dimensionless groups that include the effects of all the significant variables, in such a form that the liquid viscosity appears in only one group. Note that the driving force for the bubble motion is buoy- ancy, which is equal to the weight of the displaced fluid. (b) You want...
5) Consider the phase diagram for carbon dioxide(10). Supercritical fluid Solid Liquid Pressure (atm) -78.5 -56.4 Temperature (°C)— a) What is the critical temperature for carbon dioxide? b) What is the critical pressure for carbon dioxide? c) What phase(s) is/are present at -10°C and 30 atm. d) What phase(s) is/are present at -60°C and 10 atm. - e) What phase(s) is/are present at-78.5°C and 1 atm. f) What phase(s) is/are present at-56.4°C and 5.11 atm. g) What is the normal...
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