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Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:
1. Turbulent boundary layers are thicker than laminar boundary layer
2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.
4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.
Of these statements:
1. Turbulent boundary layers are thicker than laminar boundary layer
2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.
4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.
Of these statements:
- a)1.2.3 and 4 are correct
- b)1 and 3 are correct
- c)3 and 4 are correct
- d)1 and 2 are correct
Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements comparing turbulent boundarylayer wi...
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Consider the following statements comparing turbulent boundarylayer wi...
Statement 1: Turbulent boundary layers are thicker than laminar boundary layers.
Turbulent boundary layers are indeed thicker than laminar boundary layers. This is because turbulence introduces additional mixing and momentum transfer, causing the flow to spread out and increase in thickness. In contrast, laminar flow is characterized by smooth and orderly movement, resulting in a thinner boundary layer.
Statement 2: Velocity in turbulent boundary layers is more uniform.
This statement is incorrect. In a turbulent boundary layer, the velocity is highly fluctuating and chaotic. The presence of eddies and vortices in turbulent flow causes uneven distribution of velocity across the boundary layer. On the other hand, in a laminar boundary layer, the velocity profile is more uniform and predictable.
Statement 3: In the case of a laminar boundary layer, the thickness of the boundary layer increases more rapidly as the distance from the leading edge increases.
This statement is correct. In a laminar boundary layer, the thickness of the boundary layer increases rapidly as the distance from the leading edge increases. This is due to the development of a velocity gradient in the flow, leading to an increase in the boundary layer thickness. The growth of a laminar boundary layer is governed by the boundary layer equation, which predicts a rapid increase in thickness with distance.
Statement 4: For the same local Reynolds number, shear stress at the boundary is less in the case of a turbulent boundary layer.
This statement is correct. In turbulent flow, the shear stress at the boundary is higher compared to laminar flow. This is because turbulence introduces additional mixing and momentum transfer, resulting in increased shear stress. Higher shear stress in turbulent flow contributes to higher drag forces on surfaces. In laminar flow, the orderly movement of fluid particles leads to lower shear stress at the boundary.
Conclusion:
Based on the analysis, we can conclude that statements 1, 3, and 4 are correct, while statement 2 is incorrect. Therefore, the correct answer is option A, where all the correct statements are included.
Turbulent boundary layers are indeed thicker than laminar boundary layers. This is because turbulence introduces additional mixing and momentum transfer, causing the flow to spread out and increase in thickness. In contrast, laminar flow is characterized by smooth and orderly movement, resulting in a thinner boundary layer.
Statement 2: Velocity in turbulent boundary layers is more uniform.
This statement is incorrect. In a turbulent boundary layer, the velocity is highly fluctuating and chaotic. The presence of eddies and vortices in turbulent flow causes uneven distribution of velocity across the boundary layer. On the other hand, in a laminar boundary layer, the velocity profile is more uniform and predictable.
Statement 3: In the case of a laminar boundary layer, the thickness of the boundary layer increases more rapidly as the distance from the leading edge increases.
This statement is correct. In a laminar boundary layer, the thickness of the boundary layer increases rapidly as the distance from the leading edge increases. This is due to the development of a velocity gradient in the flow, leading to an increase in the boundary layer thickness. The growth of a laminar boundary layer is governed by the boundary layer equation, which predicts a rapid increase in thickness with distance.
Statement 4: For the same local Reynolds number, shear stress at the boundary is less in the case of a turbulent boundary layer.
This statement is correct. In turbulent flow, the shear stress at the boundary is higher compared to laminar flow. This is because turbulence introduces additional mixing and momentum transfer, resulting in increased shear stress. Higher shear stress in turbulent flow contributes to higher drag forces on surfaces. In laminar flow, the orderly movement of fluid particles leads to lower shear stress at the boundary.
Conclusion:
Based on the analysis, we can conclude that statements 1, 3, and 4 are correct, while statement 2 is incorrect. Therefore, the correct answer is option A, where all the correct statements are included.
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Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect answer is option 'A'. Can you explain this answer?
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Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect 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 Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect 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 Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect answer is option 'A'. Can you explain this answer?.
Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect 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 Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect 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 Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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ample number of questions to practice Consider the following statements comparing turbulent boundarylayer with laminar boundary layer:1. Turbulent boundary layers are thicker than laminar boundary layer2. Velocity in turbulent boundary layers is more uniform3. In case of a laminar boundary layer, the thickness of the boundarylayer increases more rapidly as the distance from the leading edgeincreases.4. For the same local Reynolds number. Shear stress at the boundaryis less in the case of turbulent boundary layer.Of these statements:a)1.2.3 and 4 are correctb)1 and 3 are correctc)3 and 4 are correctd)1 and 2 are correctCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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