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Consider the following statements and mention which of them is/are CORRECT?
  • a)
    In a laminar flow in a pipe the shear stress is maximum at the wall
  • b)
    Momentum transfer in laminar flow is at molecular level
  • c)
    Reynolds number is the ratio of viscous forces to inertia forces
  • d)
    The very thin layer adjacent to the wall in turbulent flow is called laminar sublayer
Correct answer is option 'A,B,C'. Can you explain this answer?
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Consider the following statements and mention which of them is/are COR...
Reynolds number is the ratio of viscous forces to inertia forces
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Shear Stress in Laminar Flow:
- Statement (a) is correct. In a laminar flow in a pipe, the flow is smooth and orderly, with layers of fluid sliding over each other. The shear stress is maximum at the wall because the velocity of the fluid is zero at the wall and increases towards the center of the pipe.

Momentum Transfer in Laminar Flow:
- Statement (b) is correct. In laminar flow, momentum transfer occurs primarily at the molecular level through molecular diffusion. The fluid particles move in an organized manner, with minimal mixing between layers.

Reynolds Number Definition:
- Statement (c) is correct. The Reynolds number is a dimensionless quantity that represents the ratio of inertial forces to viscous forces in a fluid flow. It helps determine whether the flow is laminar or turbulent based on this ratio.

Therefore, statements (a), (b), and (c) are correct as they accurately describe characteristics of laminar flow, including shear stress distribution, momentum transfer, and the definition of Reynolds number.
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Consider the following statements and mention which of them is/are CORRECT?a)In a laminar flow in a pipe the shear stress is maximum at the wallb)Momentum transfer in laminar flow is at molecular levelc)Reynolds number is the ratio of viscous forces to inertia forcesd)The very thin layer adjacent to the wall in turbulent flow is called laminar sublayerCorrect answer is option 'A,B,C'. Can you explain this answer?
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