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Fluid Mechanics and Hydraulic Machinery Miscellaneous

Fluid Mechanics and Hydraulic Machinery

  1. If x is the distance measured from the leading edge of a flat plate, then laminar boundary layer thickness varies as
    1. 1/x
    2. x4/5
    3. x2
    4. x1 / 2
Correct Option: D

ρ =
5x
for laminar flow
Re

Rex =
Vx
υ

∴ ρ =
5√x
for laminar flow
V / υ

∴ ρ ∝ √x



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