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Fluid Mechanics and Hydraulic Machinery Miscellaneous

Fluid Mechanics and Hydraulic Machinery

  1. The discharge velocity at the pipe exit in figure is

    1. 2gH
    2. 2gh
    3. g(H + h)
    4. 0
Correct Option: B


By applying Bernoulli’s equation at (1) and (2), we get

P1
+
V1²
+ Z1 =
P2
+
V2²
+ Z2
ρg2gρg2g

P1 = P2 = Patm
V1 = 0
V2 = ?
Z2 = H – h
∴ H =
V2²
+ H - h
2g

V2 = √2gh



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