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The head loss in a sudden expansion from 8 cm diameter pipe to 16 cm diameter pipe in terms of velocity V1, in the smaller pipe is

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Concept:

Equation of continuity: A1V1 = A2V2

A = area of cross section =

Head loss due to sudden expansion =

Where, V1 = velocity before expansion

V2 = velocity after expansion

g = acceleration due to gravity

Calculation:

Given, D1 = 8 cm, D2 = 16 cm

Using continuity equation:

Therefore, head loss,

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More Types of Minor Losses in Pipe Questions

Q1.Which of the following is NOT a reason for minor head loss in pipe flow?
Q2.Which of the following minor losses in pipe flow is taken as \(\frac{V^2}{2g}\) ? (Consider that 'v' is velocity of the liquid in the pipe and 'g' is acceleration due to gravity.)
Q3.What is the correct relation between the Loss of head at the entrance of a pipe (hi) and Loss of head at the exit of pipe (ho)?
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More Flow Through Pipes Questions

Q1.If a square pipe of side 60 cm, carries a discharge of 3 m/sec, the velocity of flow(m/sec) in the pipe is: 
Q2.The relation of friction loss factor, f = \(\rm \frac{0.3164}{(Re)^{0.25}}\) is correct for which of the following flow?
Q3.Total gradient line (or total energy line) is parallel to hydraulic gradient line with a vertical distance of _________. (The symbols have their usual meanings.) 
Q4.A compound pipeline consists of two pieces of identical pipes. The equivalent length of the same diameter and the same friction factor for this compound pipeline is L1 when the pipes are connected in series and is L2 when the pipes are connected in parallel. Determine the ratio of equivalent lengths, that is, L1 to L2.
Q5.Which of the following is NOT the remedial measure to prevent water hammer through pipes?
Q6.Which of the following is NOT a reason for minor head loss in pipe flow?
Q7.A Moody diagram represents ______ as a function of Reynolds number, in a pipe flow. 
Q8.When pipes of different diameters are connected in series from end to end to form a pipe line, the total head loss developed is equal to _______
Q9.Darcy's friction factor for a fully developed flow through a closed duct is given by _______. (Consider that Dh is hydraulic diameter, τw is wall shear stress, Δp* is piezometric pressure drop over a length of L, ρ is density and V is average flow velocity.)
Q10.In case of frictionless flow with no work or heat transfer, the height of the energy grade line (EGL) is _______ and is equal to the _______.
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