Ambient air at 20 degree Celsius flows past a flat plate with a sharp leading ed

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Question

Ambient air at 20 degree Celsius flows past a flat plate with a sharp leading edge at 3 m/s. The plate is heated uniformly throughout its entire length and is maintained at a surface temperature of 40 degree Celsius. Calculate the thickness of the hydrodynamic boundary layer. Assume that transition occurs at a critical Reynolds number of 500000

Options:

A . 16.5 mm

B . 17.5 mm

C . 18.5 mm

D . 19.5 mm

Answer: Option B
Answer: (b).17.5 mm

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