Mechanical Engineering Exam > Mechanical Engineering Questions > For laminar flow of a liquid metal over a fl...
Start Learning for Free
For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)
- a)δv < />t
- b)δv > δt
- c)δv = δt
- d)Insufficient data
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
For laminar flow of a liquid metal over a flat plate, the thicknesses...
Explanation:
Boundary Layer Theory
Boundary layer theory is a concept in fluid mechanics that describes the behavior of a fluid near a solid surface. It is used to determine the thickness of the layer of fluid near the solid surface, where the velocity of the fluid is affected by the friction between the fluid and the solid surface.
Velocity and Thermal Boundary Layers
In laminar flow of a liquid metal over a flat plate, there are two types of boundary layers - velocity boundary layer and thermal boundary layer. The thickness of the velocity boundary layer is denoted by δv, and the thickness of the thermal boundary layer is denoted by δt.
Kinematic Viscosity and Thermal Diffusivity
Kinematic viscosity is a measure of a fluid's resistance to flow under the influence of gravity. It is defined as the ratio of dynamic viscosity to density. Thermal diffusivity is a measure of a material's ability to conduct heat. It is defined as the ratio of thermal conductivity to the product of density and specific heat capacity.
Comparison of Kinematic Viscosity and Thermal Diffusivity
In this question, it is given that the kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. This means that the liquid metal is better at conducting heat than it is at flowing under the influence of gravity.
Answer
Based on the given information, the correct option is A - δv t. This is because the thermal boundary layer is thicker than the velocity boundary layer due to the higher thermal diffusivity of the liquid metal.
Boundary Layer Theory
Boundary layer theory is a concept in fluid mechanics that describes the behavior of a fluid near a solid surface. It is used to determine the thickness of the layer of fluid near the solid surface, where the velocity of the fluid is affected by the friction between the fluid and the solid surface.
Velocity and Thermal Boundary Layers
In laminar flow of a liquid metal over a flat plate, there are two types of boundary layers - velocity boundary layer and thermal boundary layer. The thickness of the velocity boundary layer is denoted by δv, and the thickness of the thermal boundary layer is denoted by δt.
Kinematic Viscosity and Thermal Diffusivity
Kinematic viscosity is a measure of a fluid's resistance to flow under the influence of gravity. It is defined as the ratio of dynamic viscosity to density. Thermal diffusivity is a measure of a material's ability to conduct heat. It is defined as the ratio of thermal conductivity to the product of density and specific heat capacity.
Comparison of Kinematic Viscosity and Thermal Diffusivity
In this question, it is given that the kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. This means that the liquid metal is better at conducting heat than it is at flowing under the influence of gravity.
Answer
Based on the given information, the correct option is A - δv t. This is because the thermal boundary layer is thicker than the velocity boundary layer due to the higher thermal diffusivity of the liquid metal.
Free Test
FREE
| Start Free Test |
Community Answer
For laminar flow of a liquid metal over a flat plate, the thicknesses...
Thermal diffusivity (α) >> Kinematic viscosity (v)
Prandtl number (Pr) = v/α [∴ α >> v]
Pr < />
δv/δt ≃ (Pr)1/3
Pr < 1="" />v< />t
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Top Courses for Mechanical EngineeringView all
For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer?
Question Description
For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer?.
For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer?.
Solutions for For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice For laminar flow of a liquid metal over a flat plate, the thicknesses of velocity and thermal boundary layers are δv and δt respectively. Kinematic viscosity of liquid metal is significantly lower than its thermal diffusivity. Based on this information, pick the correct option given below. (Note: Temperature of liquid metal is different from that of the plate)a)δv tb)δv > δtc)δv = δtd)Insufficient dataCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup