Question

Why the pressure and wall shear is high at the inlet of the pipe?

Answer 1

Hello friend
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-----------------------------------------------------------------it is depend on the surface area of pipe .if surface area is more so pressure is low .if surface area is less so pressure is high.
i hope it will help you

Answer 2

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• pressure drop is the driving force to push fluid to flow through a pipe, that means as far as there is no pressure difference between two points along the pipe length there is no flow.
• Generally pressure drop takes place even radially, but the value is too smaller than that in length.
• therefore we just consider the pressure drop in pipe length.
• when you have a fully developed flow it doesn't mean that there is no pressure drop, it just means there is no velocity difference along the axis where we have fully developed flow.

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