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The correct relationship among displacement thickness ‘d’, momentum thickness ‘m’ and energy thickness 'e' is
  • a)
    d > m > e
  • b)
    d > e > m
  • c)
    e > m > d
  • d)
    e > d > m
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The correct relationship among displacement thickness ‘d’,...
Displacement thickness,
Momentum thickness,
Energy thickness,
δ > δE > δθ 
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Most Upvoted Answer
The correct relationship among displacement thickness ‘d’,...
, momentum thickness, and boundary layer thickness is:

displacement thickness < momentum="" thickness="" />< boundary="" layer="" />

The displacement thickness represents the distance by which the flow is displaced due to the presence of a boundary layer. The momentum thickness represents the reduction in momentum of the flow due to the boundary layer. The boundary layer thickness represents the total thickness of the boundary layer. The displacement thickness is always smaller than the momentum thickness, and the momentum thickness is always smaller than the boundary layer thickness.
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The correct relationship among displacement thickness ‘d’, momentum thickness ‘m’ and energy thickness 'e' isa)d > m > eb)d > e > mc)e > m > dd)e > d > mCorrect answer is option 'B'. Can you explain this answer?
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