The pressure head loss experienced by fluid flow due to friction in a pipe reduces witha)Increased length of pipeb)Increased diameter of pipec)Decreased length of piped)Both b and cCorrect answer is option 'D'. Can you explain this answer?

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The pressure head loss experienced by fluid flow due to friction in a pipe reduces with

a)
Increased length of pipe
b)
Increased diameter of pipe
c)
Decreased length of pipe
d)
Both b and c

Correct answer is option 'D'. Can you explain this answer?

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The pressure head loss experienced by fluid flow due to friction in a ...

Frictional Head Loss in Pipe

Frictional energy loss per length of the pipe depends on the flow velocity, pipe length, pipe diameter, and a friction factor based on the roughness of the pipe, and whether the flow is laminar or turbulent (i.e. the Reynolds number of the flow).
The total energy of the fluid conserves as a consequence of the law of conservation of energy.
In reality, the head loss due to friction results in an equivalent increase in the internal energy (increase in temperature) of the fluid.
The most common equation used to calculate frictional head losses in a tube or pipet is the Darcy–Weisbach equation (head loss form).

where Δp = pressure loss, fD = darcy friction factor, L = length of pipe, D = hydraulic diameter, V = fluid flow average velocity, ρ = fluid density.
As head loss or pressure loss due to friction in the pipe is

Directly proportional to the length of the pipe
Inversely proportional to the diameter of the pipe.

Hence the reduction in length and increase in diameter of the pipe will reduce frictional head or pressure loss.

Answered by Engineers Club · View profile

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The pressure head loss experienced by fluid flow due to friction in a pipe reduces witha)Increased length of pipeb)Increased diameter of pipec)Decreased length of piped)Both b and cCorrect answer is option 'D'. Can you explain this answer?

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