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Velocity defect in boundary layer theory is defined as
- a)The error in the measurement of velocity at any point in the boundary layer
- b)The difference between the velocity at a point within the boundary layer andthe free stream velocity
- c)The difference between the velocity at any point within the boundary layerand the velocity nearer the boundary
- d)The ratio between the velocity at a point in the boundary layer and the freestream velocity
Correct answer is option 'B'. Can you explain this answer?
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Velocity defect in boundary layer theory is defined asa)The error in t...
Ans. (b)
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Velocity defect in boundary layer theory is defined asa)The error in t...
Velocity defect in boundary layer theory is defined as:
The difference between the velocity at a point within the boundary layer and the free stream velocity.
Explanation:
In boundary layer theory, the boundary layer refers to the thin layer of fluid that forms near the surface of an object when it is in contact with a moving fluid (such as air or water). This layer is characterized by a gradual change in velocity from zero at the surface to the free stream velocity away from the surface.
The velocity defect is a term used to describe the reduction in velocity within the boundary layer compared to the free stream velocity. It represents the difference between the velocity at a point within the boundary layer and the free stream velocity.
Importance of velocity defect:
Understanding the velocity defect is crucial in boundary layer theory as it helps in analyzing the behavior of fluid flow near solid surfaces. The velocity defect provides valuable information about the development and characteristics of the boundary layer, such as its thickness and the rate at which it grows.
Significance of velocity defect:
The velocity defect indicates the existence of a viscous drag force acting on the object due to the interaction between the fluid and the solid surface. This drag force is responsible for the resistance experienced by the object as it moves through the fluid.
The velocity defect is also related to the boundary layer thickness. As the fluid flows over the surface, the boundary layer grows in thickness due to the diffusion of momentum from the high velocity free stream to the lower velocity near the surface. The velocity defect, therefore, increases with increasing distance from the surface.
Conclusion:
In summary, the velocity defect in boundary layer theory is defined as the difference between the velocity at a point within the boundary layer and the free stream velocity. It provides important insights into the behavior of fluid flow near solid surfaces and is crucial in understanding the development and characteristics of the boundary layer.
The difference between the velocity at a point within the boundary layer and the free stream velocity.
Explanation:
In boundary layer theory, the boundary layer refers to the thin layer of fluid that forms near the surface of an object when it is in contact with a moving fluid (such as air or water). This layer is characterized by a gradual change in velocity from zero at the surface to the free stream velocity away from the surface.
The velocity defect is a term used to describe the reduction in velocity within the boundary layer compared to the free stream velocity. It represents the difference between the velocity at a point within the boundary layer and the free stream velocity.
Importance of velocity defect:
Understanding the velocity defect is crucial in boundary layer theory as it helps in analyzing the behavior of fluid flow near solid surfaces. The velocity defect provides valuable information about the development and characteristics of the boundary layer, such as its thickness and the rate at which it grows.
Significance of velocity defect:
The velocity defect indicates the existence of a viscous drag force acting on the object due to the interaction between the fluid and the solid surface. This drag force is responsible for the resistance experienced by the object as it moves through the fluid.
The velocity defect is also related to the boundary layer thickness. As the fluid flows over the surface, the boundary layer grows in thickness due to the diffusion of momentum from the high velocity free stream to the lower velocity near the surface. The velocity defect, therefore, increases with increasing distance from the surface.
Conclusion:
In summary, the velocity defect in boundary layer theory is defined as the difference between the velocity at a point within the boundary layer and the free stream velocity. It provides important insights into the behavior of fluid flow near solid surfaces and is crucial in understanding the development and characteristics of the boundary layer.
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Velocity defect in boundary layer theory is defined asa)The error in the measurement of velocity at any point in the boundary layerb)The difference between the velocity at a point within the boundary layer andthe free stream velocityc)The difference between the velocity at any point within the boundary layerand the velocity nearer the boundaryd)The ratio between the velocity at a point in the boundary layer and the freestream velocityCorrect answer is option 'B'. Can you explain this answer?
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Velocity defect in boundary layer theory is defined asa)The error in the measurement of velocity at any point in the boundary layerb)The difference between the velocity at a point within the boundary layer andthe free stream velocityc)The difference between the velocity at any point within the boundary layerand the velocity nearer the boundaryd)The ratio between the velocity at a point in the boundary layer and the freestream velocityCorrect answer is option 'B'. 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 Velocity defect in boundary layer theory is defined asa)The error in the measurement of velocity at any point in the boundary layerb)The difference between the velocity at a point within the boundary layer andthe free stream velocityc)The difference between the velocity at any point within the boundary layerand the velocity nearer the boundaryd)The ratio between the velocity at a point in the boundary layer and the freestream velocityCorrect answer is option 'B'. 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 Velocity defect in boundary layer theory is defined asa)The error in the measurement of velocity at any point in the boundary layerb)The difference between the velocity at a point within the boundary layer andthe free stream velocityc)The difference between the velocity at any point within the boundary layerand the velocity nearer the boundaryd)The ratio between the velocity at a point in the boundary layer and the freestream velocityCorrect answer is option 'B'. Can you explain this answer?.
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