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Solution of BLE for Internal Flows

Maximum thick...

Question

Maximum thickness of thermal boundary layer formed when the fluid is flowing through the pipe of diameter 10 mm with laminar flow is

A

None

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B

5 mm

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C

2.5 mm

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D

1.25 mm

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Solution

The correct option is B 5 mm

Maximum thickness of thermal boundary layer in the tube = Radius of the tube

$δ_{t} = \frac{10}{2} = 5 m m$

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